HBO & CO
S-4/A, 1996-07-18
COMPUTER INTEGRATED SYSTEMS DESIGN
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<PAGE>
   
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JULY 18, 1996
    
   
                                                       REGISTRATION NO. 333-5663
    
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
   
                                AMENDMENT NO. 1
                                       TO
                                    FORM S-4
    
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
                                 HBO & COMPANY
 
             (Exact Name of Registrant as Specified in Its Charter)
 
<TABLE>
<S>                                   <C>                            <C>
             DELAWARE                             7373                         37-0986839
  (State or Other Jurisdiction of     (Primary Standard Industrial          (I.R.S. Employer
  Incorporation or Organization)      Classification Code Number)        Identification Number)
</TABLE>
 
                            ------------------------
 
                           301 PERIMETER CENTER NORTH
                             ATLANTA, GEORGIA 30346
                                 (770) 393-6000
         (Address, including zip code, and telephone number, including
            area code, of registrant's principal executive offices)
                            ------------------------
 
                               CHARLES W. MCCALL
                                 PRESIDENT AND
                            CHIEF EXECUTIVE OFFICER
                                 HBO & COMPANY
                           301 PERIMETER CENTER NORTH
                             ATLANTA, GEORGIA 30346
                                 (770) 393-6000
 (Name, address, including zip code, and telephone number, including area code,
                             of agent for service)
                            ------------------------
 
                                   COPIES TO:
 
<TABLE>
<S>                                       <C>
         LISA A. STATER, ESQ.                    MATTHEW P. FEENEY, ESQ.
      Jones, Day, Reavis & Pogue                  Snell & Wilmer L.L.P.
      3500 One Peachtree Center                     One Arizona Center
      303 Peachtree Street, N.E.               Phoenix, Arizona 85004-0001
     Atlanta, Georgia 30308-3242                      (602) 382-6000
            (404) 521-3939
</TABLE>
 
                            ------------------------
 
        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
AS SOON AS PRACTICABLE AFTER THE EFFECTIVE DATE OF THIS REGISTRATION STATEMENT.
                            ------------------------
 
   
    If  the  securities  being registered  on  this  Form are  being  offered in
connection with the formation of a holding company and there is compliance  with
General Instruction G, check the following box: / /
    
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                              CYCARE SYSTEMS, INC.
                           7001 NORTH SCOTTSDALE ROAD
                                   SUITE 1000
                         SCOTTSDALE, ARIZONA 85253-3644
 
   
                                                                   July 18, 1996
    
 
To the Stockholders:
 
   
    You  are cordially invited to attend  a special meeting of stockholders (the
"Meeting") of  CyCare  Systems,  Inc.  ("CyCare")  to  be  held  at  7001  North
Scottsdale  Road, Suite 1000, Scottsdale, Arizona 85253-3644 at 9:00 a.m., local
time, on August 21, 1996.
    
 
    At the  Meeting, you  will  be asked  to consider  and  take action  upon  a
proposal  to approve  an Agreement  of Merger  dated May  18, 1996  (the "Merger
Agreement"), among CyCare, HBO &  Company, a Delaware corporation ("HBOC"),  and
HBO  &  Company  of Georgia,  a  Delaware  corporation that  is  a  wholly owned
subsidiary of  HBOC ("HBOC-GA"),  pursuant  to which,  among other  things,  (a)
CyCare  will merge with and into HBOC-GA (the "Merger") and (b) each outstanding
share of  Common Stock,  $.01 par  value per  share, of  CyCare ("CyCare  Common
Stock"),  and  each right  to acquire  a share  of CyCare  Common Stock  will be
converted into the right  to receive .86  of a share of  Common Stock, $.05  par
value  per share,  of HBOC,  subject to possible  adjustment as  provided in the
Merger Agreement, and  less the amount  of any fractional  share, which will  be
paid in cash.
 
    Details  of the proposed  Merger and Merger  Agreement are set  forth in the
accompanying Proxy Statement/Prospectus which you are urged to review carefully.
A  copy   of   the   Merger   Agreement  is   also   attached   to   the   Proxy
Statement/Prospectus as Appendix A.
 
   
    Your  Board of Directors  has carefully considered  and unanimously approved
the Merger proposal and has  determined that the Merger is  fair to, and in  the
best  interests of, CyCare  and its stockholders.  Accordingly, the CyCare Board
unanimously recommends  that  stockholders  vote  FOR  approval  of  the  Merger
Agreement.  The Board of Directors has  been advised by Broadview Associates LLC
that, in its  opinion, the consideration  to be paid  by HBOC in  the Merger  is
fair,  from a financial point of view, to  CyCare stockholders as of the date of
such  opinion.   A   copy  of   such   opinion   is  attached   to   the   Proxy
Statement/Prospectus as Appendix B.
    
 
    It  is important that your shares be  represented at the Meeting. Whether or
not you expect to attend  in person, please promptly  sign, date and return  the
enclosed proxy card in the enclosed, postage prepaid envelope.
 
                                          Sincerely,
 
   
                                          /s/ Jim H. Houtz
    
 
                                          Jim H. Houtz
                                          Chief Executive Officer and
                                          Chairman of the Board
<PAGE>
                              CYCARE SYSTEMS, INC.
                           7001 NORTH SCOTTSDALE ROAD
                                   SUITE 1000
                         SCOTTSDALE, ARIZONA 85253-3644
 
                            ------------------------
 
                                   NOTICE OF
                        SPECIAL MEETING OF STOCKHOLDERS
                             ---------------------
 
To the Stockholders:
 
   
    A Special Meeting of Stockholders (the "Meeting") of CyCare Systems, Inc., a
Delaware  corporation ("CyCare"),  will be held  at 7001  North Scottsdale Road,
Suite 1000, Scottsdale, Arizona  85253-3644, on Wednesday,  August 21, 1996,  at
9:00 a.m., local time, for the following purpose:
    
 
        To  consider and vote upon a proposal  to approve an Agreement of Merger
        dated May  18,  1996  (the  "Merger Agreement"),  among  CyCare,  HBO  &
        Company,  a Delaware corporation ("HBOC"), and HBO & Company of Georgia,
        a Delaware  corporation  that  is  a wholly  owned  subsidiary  of  HBOC
        ("HBOC-GA"), pursuant to which, among other things (a) CyCare will merge
        with  and into HBOC-GA (the "Merger")  and (b) each outstanding share of
        Common Stock,  $.01  par  value  per share  of  CyCare  ("CyCare  Common
        Stock"),  and each right to acquire a  share of CyCare Common Stock will
        be converted into the right to receive  .86 of a share of Common  Stock,
        $.05  par value  per share, of  HBOC, subject to  possible adjustment as
        provided in the Merger Agreement, and less the amount of any  fractional
        share, which will be paid in cash.
 
    The  Board  of  Directors  of CyCare  has  unanimously  approved  the Merger
proposal and  has  determined that  the  Merger is  fair  to, and  in  the  best
interests  of,  CyCare  and  its  stockholders.  Accordingly,  the  CyCare Board
unanimously recommends that you vote FOR approval of the Merger Agreement.
 
   
    The Board of Directors has fixed the close of business on July 16, 1996,  as
the record date for the determination of stockholders entitled to receive notice
of, and to vote at, the Meeting. Accordingly, only stockholders of record at the
close  of business on such date  are entitled to notice of,  and to vote at, the
Meeting or any adjournment or postponement thereof.
    
 
    Details of the Merger and other important information concerning CyCare  and
HBOC   are  more   fully  described   in  the   accompanying  Proxy   and  Proxy
Statement/Prospectus. Please give this information your careful consideration.
 
                                          BY ORDER OF THE BOARD OF DIRECTORS
 
   
                                          /s/ Mark R. Schonau
    
 
                                          Mark R. Schonau, Secretary
 
   
Scottsdale, Arizona
July 18, 1996
    
 
ALL STOCKHOLDERS ARE INVITED TO ATTEND THE MEETING IN PERSON. WHETHER OR NOT YOU
PLAN TO ATTEND THE MEETING, PLEASE  PROMPTLY DATE, SIGN AND RETURN THE  ENCLOSED
PROXY.  A POSTAGE PREPAID  ENVELOPE IS PROVIDED  FOR MAILING. A  PERSON GIVING A
PROXY HAS THE POWER  TO REVOKE IT  IN THE MANNER  DESCRIBED IN THE  ACCOMPANYING
PROXY  STATEMENT/PROSPECTUS AT ANY TIME BEFORE IT HAS BEEN VOTED AT THE MEETING.
IF YOU ATTEND THE MEETING,  YOUR PROXY WILL NOT BE  COUNTED WITH RESPECT TO  ANY
MATTER UPON WHICH YOU VOTE IN PERSON.
<PAGE>
INFORMATION   CONTAINED  HEREIN  IS  SUBJECT   TO  COMPLETION  OR  AMENDMENT.  A
REGISTRATION STATEMENT  RELATING TO  THESE SECURITIES  HAS BEEN  FILED WITH  THE
SECURITIES  AND EXCHANGE  COMMISSION. THESE SECURITIES  MAY NOT BE  SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR  TO THE TIME THE REGISTRATION STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE AN  OFFER  TO  SELL  OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE  SECURITIES
IN  ANY STATE IN WHICH SUCH OFFER,  SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF SUCH STATE.
<PAGE>
   
                   SUBJECT TO COMPLETION DATED JULY 18, 1996
    
 
                                PROXY STATEMENT
                                       OF
                              CYCARE SYSTEMS, INC.
                      FOR SPECIAL MEETING OF STOCKHOLDERS
                             ---------------------
 
                                   PROSPECTUS
                                       OF
                                 HBO & COMPANY
                                ----------------
 
   
    This Proxy  Statement/Prospectus is  being furnished  to holders  of  Common
Stock,  $.01 par  value per  share ("CyCare  Common Stock"),  of CyCare Systems,
Inc., a Delaware corporation ("CyCare"), as a proxy statement in connection with
the solicitation of  proxies by the  Board of Directors  of CyCare (the  "CyCare
Board") for use at the Special Meeting (the "Meeting") of stockholders of CyCare
to  be  held on  August 21,  1996, at  7001 North  Scottsdale Road,  Suite 1000,
Scottsdale, Arizona 85253-3644 commencing at 9:00  a.m., local time, and at  any
adjournment  or postponement thereof for the purpose set forth herein and in the
accompanying Notice of Special Meeting of Stockholders of CyCare.
    
 
    This Proxy Statement/Prospectus  also constitutes  the prospectus  of HBO  &
Company, a Delaware corporation ("HBOC"), with respect to up to 5,060,440 shares
(net  of the aggregate  amount of fractional  shares which are  paid in cash) of
common stock, $.05 par value per share, of HBOC (the "HBOC Common Stock") to  be
issued  in connection with the merger (the "Merger") of CyCare with and into HBO
& Company of Georgia, a Delaware  corporation that is a wholly owned  subsidiary
of HBOC ("HBOC-GA"), in exchange for all of the outstanding shares and rights to
acquire  shares of CyCare Common  Stock. In the Merger,  subject to the terms of
the Agreement of Merger dated May 18, 1996, among CyCare, HBOC and HBOC-GA  (the
"Merger  Agreement"), each  outstanding share  of CyCare  Common Stock  and each
right to acquire a share of CyCare Common Stock will be converted into the right
to receive: (i)  .86 of a  share of HBOC  Common Stock, if  the average  closing
market  price per share of the HBOC Common Stock (the "Market Value") during the
twenty (20) consecutive trading  days ending on the  third trading day prior  to
the  date of the Meeting as reported  by the Nasdaq Stock Market National Market
(the "Nasdaq NM") is at least $52.25 but not more than $65.00; (ii) a fractional
share determined by dividing $44.935 by the Market Value, if the Market Value is
less than $52.25; and (iii) a fractional share determined by dividing $55.90  by
the  Market Value, if  the Market Value  is more than  $65.00 (whatever basis is
applicable being referred to  as the "Exchange Ratio"),  and less the amount  of
any fractional shares paid in cash.
 
    Outstanding  and  unexercised vested  options to  purchase shares  of CyCare
Common Stock will be assumed by HBOC upon completion of the Merger such that the
holder will have the right to purchase the number of shares of HBOC Common Stock
into which the shares of CyCare Common Stock subject to such options would  have
been converted in the Merger.
 
   
    As a result of the Merger, and assuming the Exchange Ratio is .86 of a share
of HBOC Common Stock for each share of CyCare Common Stock, holders of shares of
CyCare  Common Stock  or rights  to acquire shares  of CyCare  Common Stock will
receive an  aggregate  of  4,842,527  shares of  HBOC  Common  Stock  (less  the
aggregate  amount of any fractional shares that are paid in cash) of HBOC Common
Stock. The number  of shares  of HBOC  Common Stock  issuable in  the Merger  is
subject  to adjustment  in accordance  with the  Merger Agreement.  Assuming the
Market Value were $50.00 per share of HBOC Common Stock resulting in an Exchange
Ratio of .89870  of a  share of HBOC  Common Stock  for each share  or right  to
acquire a share of CyCare Common Stock, an aggregate of 5,060,440 shares of HBOC
Common  Stock would be  issuable in the  Merger. Assuming the  Market Value were
$67.50 per share of HBOC Common Stock  resulting in an Exchange Ratio of  .82815
of  a share of HBOC Common  Stock for each share or  right to acquire a share of
CyCare Common Stock, an aggregate of 4,663,184 shares of HBOC Common Stock would
be issuable in the  Merger. Shares of HBOC  Common Stock are currently  approved
for  quotation on the  Nasdaq NM under  the symbol "HBOC,"  and shares of CyCare
Common Stock  are  currently  approved  for quotation  on  the  New  York  Stock
Exchange,  Inc.  (the "NYSE")  under the  symbol  "CYS." On  July 17,  1996, the
reported closing sale price of a share of HBOC Common Stock on the Nasdaq NM was
$62.50, and the reported closing sale price of a share of CyCare Common Stock on
the NYSE was $50.625. See "Certain Market Information."
    
 
   
    This Proxy Statement/Prospectus  and the related  Notice of Special  Meeting
and  form  of  proxy are  first  being mailed  on  or  about July  19,  1996, to
stockholders of record at the  close of business on  July 16, 1996 (the  "Record
Date").  There were 5,067,670  shares of CyCare Common  Stock outstanding at the
close of business on the Record Date. Only stockholders of record on the  Record
Date will be entitled to notice of, and to vote at, the Meeting.
    
 
   
    The  Board of Directors of HBOC  approved a two-for-one stock split effected
in the form of a stock dividend paid  June 10, 1996 to all holders of record  of
HBOC Common Stock on May 27, 1996 and, accordingly, all share and per share data
regarding  HBOC  Common  Stock  in  this  Proxy  Statement/Prospectus  have been
adjusted to give effect  to such stock split,  except as otherwise  specifically
noted herein.
    
 
    THE  ABOVE  MATTERS  ARE  DISCUSSED  IN  DETAIL  IN  THIS  PROXY  STATEMENT/
PROSPECTUS. STOCKHOLDERS OF CYCARE ARE STRONGLY URGED TO READ AND CONSIDER  THIS
PROXY  STATEMENT/PROSPECTUS IN  ITS ENTIRETY.  SEE "RISK  FACTORS," BEGINNING ON
PAGE 14 OF THIS PROXY STATEMENT/PROSPECTUS, FOR A DISCUSSION OF CERTAIN  FACTORS
THAT  SHOULD BE CONSIDERED BY CYCARE STOCKHOLDERS  IN DETERMINING HOW TO VOTE ON
THE MERGER AGREEMENT.
                             ---------------------
THESE SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES  AND
EXCHANGE  COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION,  NOR  HAS THE
     SECURITIES  AND  EXCHANGE  COMMISSION  OR  ANY  STATE   SECURITIES
         COMMISSION  PASSED UPON THE ACCURACY  OR ADEQUACY OF THIS
              PROXY STATEMENT/PROSPECTUS. ANY   REPRESENTATION
                     TO THE CONTRARY IS A CRIMINAL OFFENSE.
                           --------------------------
 
   
         THE DATE OF THIS PROXY STATEMENT/PROSPECTUS IS JULY 18, 1996.
    
<PAGE>
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
AVAILABLE INFORMATION AND SOURCES OF INFORMATION..........................     4
INCORPORATION OF CERTAIN INFORMATION BY REFERENCE.........................     5
SUMMARY...................................................................     6
  The Parties.............................................................     6
  The Meeting.............................................................     7
  The Merger Proposal.....................................................     7
  Other...................................................................     9
  Summary Financial Data..................................................    10
  Unaudited Pro Forma Summary Financial Data..............................    11
  Comparative Per Share Data..............................................    12
RISK FACTORS..............................................................    14
  Interests of Certain Officers and Directors in the Merger...............    14
  Election Concerning Employee Stock Purchase Plan........................    14
CERTAIN MARKET INFORMATION................................................    14
  HBOC....................................................................    14
  CyCare..................................................................    15
THE MEETING...............................................................    15
THE MERGER PROPOSAL.......................................................    16
  Background of the Merger................................................    16
  Reasons of CyCare for Engaging in the Merger; Recommendation of the
   CyCare Board...........................................................    22
  Opinion of Financial Advisor of CyCare..................................    23
  Reasons for HBOC for Engaging in the Merger.............................    27
  Terms of the Merger.....................................................    27
    Effective Time........................................................    27
    General Effects of the Merger.........................................    27
    Conversion of Shares..................................................    27
    Fractional Shares.....................................................    28
    Stock Option and Restricted Stock Plans...............................    28
    Employee Stock Purchase Plan..........................................    28
    Exchange of Certificates..............................................    28
    Payment of Dividends..................................................    29
    Limitations on Transferability of HBOC Common Stock...................    29
    Conditions, Waiver....................................................    29
    Hart-Scott-Rodino.....................................................    30
    No Solicitation.......................................................    30
    Termination...........................................................    31
  Accounting Treatment....................................................    31
  Certain Federal Income Tax Consequences.................................    31
  No Appraisal Rights.....................................................    33
INTERESTS OF CERTAIN PERSONS IN EACH OF HBOC AND CYCARE...................    34
  Security Ownership of Certain Beneficial Owners and Management of
   HBOC...................................................................    34
  Security Ownership of Certain Beneficial Owners and Management of
   CyCare.................................................................    36
  Interests of Certain Persons in Matters to be Acted Upon................    37
COMPARISON OF RIGHTS OF HOLDERS OF SHARES OF EACH OF HBOC COMMON STOCK AND
 CYCARE COMMON STOCK......................................................    38
  Introduction............................................................    38
  Authorized Capital Stock................................................    39
  Board or Stockholder Approved Preferred Stock...........................    39
  Voting Rights...........................................................    39
  Number of Directors.....................................................    40
</TABLE>
    
 
                                       2
<PAGE>
   
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
  Election of Board of Directors..........................................    40
  Vote on Merger; Consolidation or Sale of Substantially All Assets.......    40
  Special Meetings of Stockholders........................................    40
  Stockholder Action by Written Consent...................................    40
  Amendment of Certificate of Incorporation...............................    41
  Amendment of Bylaws.....................................................    41
  Liability and Indemnification of Officers and Directors.................    41
  Payment of Dividends....................................................    42
  Anti-Takeover Protection................................................    42
  Appraisal Rights........................................................    42
BUSINESS OF HBOC..........................................................    43
BUSINESS OF CYCARE........................................................    43
STOCKHOLDER PROPOSALS.....................................................    44
OTHER MATTERS.............................................................    44
CERTAIN LEGAL MATTERS.....................................................    44
EXPERTS...................................................................    44
APPENDICES
  APPENDIX A -- Agreement of Merger.......................................   A-1
  APPENDIX B -- Opinion of Broadview Associates LLC.......................   B-1
</TABLE>
    
 
                                       3
<PAGE>
                AVAILABLE INFORMATION AND SOURCES OF INFORMATION
 
   
    Each  of HBOC and CyCare is subject to the informational requirements of the
Securities Exchange  Act  of 1934,  as  amended  (the "Exchange  Act"),  and  in
accordance  therewith files reports, proxy statements and other information with
the Securities and  Exchange Commission (the  "Commission"). The reports,  proxy
statements  and other  information filed  by each  of HBOC  and CyCare  with the
Commission can  be  inspected and  copied  at the  public  reference  facilities
maintained  by the Commission at Room  1024, 450 Fifth Street, N.W., Washington,
D.C. 20549, and at  the Commission's Regional Offices  at 7 World Trade  Center,
13th  Floor, New  York, New  York 10048, and  Citicorp Center,  500 West Madison
Street, Suite 1400, Chicago, Illinois 60661. Copies of such material also may be
obtained by mail from the Public Reference Section of the Commission, Room 1024,
450  Fifth  Street,   N.W.,  Washington,  D.C.   20549,  at  prescribed   rates.
Additionally,  the Commission maintains a Web site on the Internet that contains
reports, proxy  and  information  statements  and  other  information  regarding
registrants  that file electronically with the Commission and that is located at
http:// www.sec.gov.  CyCare  Common Stock  is  listed  on the  New  York  Stock
Exchange,  Inc.  and  copies of  CyCare's  reports, proxy  statements  and other
information may  also be  requested at  the office  of such  exchange, 20  Broad
Street, New York, New York 10005.
    
 
    HBOC  has filed  with the  Commission a  Registration Statement  on Form S-4
(together with any amendments thereto,  the "Registration Statement") under  the
Securities  Act of 1933,  as amended (the "Securities  Act"), which includes the
proxy statement of CyCare with respect to the Merger and the prospectus of  HBOC
with  respect to the  shares of HBOC  Common Stock issuable  in the Merger. This
Proxy Statement/Prospectus does not contain all the information set forth in the
Registration Statement, certain portions of which are omitted in accordance with
the rules and regulations of the Commission. Statements contained in this  Proxy
Statement/Prospectus  as to  the contents  of any  contract, agreement  or other
document referred to  are not necessarily  complete. With respect  to each  such
contract,  agreement or other  document filed as an  exhibit to the Registration
Statement or  otherwise filed  with the  Commission, reference  is made  to  the
exhibit  or other filing for a more complete description of the matter involved,
and each  such statement  shall be  deemed  qualified in  its entirety  by  such
reference.  Copies of the  Registration Statement together  with exhibits may be
inspected at the office of the Commission in Washington, D.C. without charge and
copies thereof may be obtained therefrom upon payment of a prescribed fee.
 
    All information  contained  in  this  Proxy  Statement/Prospectus  regarding
CyCare  has been supplied  by CyCare, information  regarding the Merger proposal
has been  supplied by  CyCare and/or  HBOC and  all other  information has  been
supplied   by   HBOC.   References   to   CyCare   and   HBOC   in   this  Proxy
Statement/Prospectus mean the  respective corporations  and, in  each case,  its
consolidated subsidiaries except as the context may otherwise indicate.
 
    NO  PERSONS HAVE  BEEN AUTHORIZED  TO GIVE  ANY INFORMATION  OR TO  MAKE ANY
REPRESENTATION, OTHER THAN THOSE  CONTAINED IN THIS PROXY  STATEMENT/PROSPECTUS,
IN CONNECTION WITH THE SOLICITATION OF PROXIES OR THE OFFERING OF SHARES OF HBOC
COMMON   STOCK  MADE  HEREBY  AND,  IF   GIVEN  OR  MADE,  SUCH  INFORMATION  OR
REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY HBOC, CYCARE
OR ANY  OTHER PERSON.  THIS PROXY  STATEMENT/PROSPECTUS DOES  NOT CONSTITUTE  AN
OFFER  TO SELL,  OR A SOLICITATION  OF AN OFFER  TO BUY, ANY  SECURITIES, OR THE
SOLICITATION OF A PROXY, IN ANY JURISDICTION TO OR FROM ANY PERSON TO WHOM IT IS
NOT LAWFUL TO MAKE ANY SUCH OFFER OR SOLICITATION IN SUCH JURISDICTION.  NEITHER
THE  DELIVERY  OF  THIS  PROXY STATEMENT/  PROSPECTUS  NOR  ANY  DISTRIBUTION OF
SECURITIES MADE HEREUNDER  SHALL UNDER ANY  CIRCUMSTANCES CREATE AN  IMPLICATION
THAT  THERE HAS BEEN NO CHANGE  IN THE AFFAIRS OF HBOC  OR CYCARE SINCE THE DATE
HEREOF OR THAT THE INFORMATION  HEREIN IS CORRECT AS  OF ANY TIME SUBSEQUENT  TO
THE DATE HEREOF.
 
                                       4
<PAGE>
               INCORPORATION OF CERTAIN INFORMATION BY REFERENCE
 
    The information in the following documents filed by HBOC with the Commission
(File  No. 0-9900) pursuant to the Exchange  Act is incorporated by reference in
this Proxy Statement/ Prospectus:
 
        1.  Annual Report on  Form 10-K for the  fiscal year ended December  31,
    1995 filed with the Commission on March 13, 1996;
 
        2.   Quarterly Report on Form 10-Q  for the quarter ended March 31, 1996
    filed with the Commission on May 3, 1996;
 
        3.  Current Reports on Form 8-K: (i) dated and filed with the Commission
    on June  23, 1995,  as amended  by Form  8-K(A), dated  and filed  with  the
    Commission  on July 31,  1995, as amended  by Form 8-K(A)2,  dated and filed
    with the Commission on August 8, 1995, and as amended by Form 8-K(A)3, dated
    and filed with the Commission on June 5, 1996; (ii) dated and filed with the
    Commission on  February  27,  1996;  and (iii)  dated  and  filed  with  the
    Commission on May 21, 1996;
 
        4.  Proxy Statement, dated as of April 3, 1996, filed in definitive form
    on  April  3,  1996 with  the  Commission  with respect  to  the information
    required to be  included herein  by Items 401  (management), 402  (executive
    compensation)  and 404  (certain relationships and  related transactions) of
    Regulation S-K promulgated under  the Securities Act  and the Exchange  Act;
    and
 
        5.   The description of Common Stock and Preferred Share Purchase Rights
    contained in  HBOC's Registration  Statements on  Form 8-A,  filed with  the
    Commission on August 19, 1981, as amended and February 19, 1991, as amended,
    respectively.
 
    The  information  in  the  following  documents  filed  by  CyCare  with the
Commission (File No.  1-9815) pursuant to  the Exchange Act  is incorporated  by
reference in this Proxy Statement/ Prospectus:
 
        1.   Annual Report on  Form 10-K for the  fiscal year ended December 31,
    1995 filed with the Commission on April 1, 1996;
 
        2.  Quarterly Report on Form 10-Q  for the quarter ended March 31,  1996
    filed with the Commission on May 15, 1996;
 
        3.   Current Report on Form 8-K,  dated and filed with the Commission on
    May 31, 1996; and
 
        4.  Proxy  Statement, dated as  of March 29,  1996, filed in  definitive
    form  on April 1, 1996  with the Commission with  respect to the information
    required to be  included herein  by items 401  (management), 402  (executive
    compensation)  and 404  (certain relationships and  related transactions) of
    Regulation S-K promulgated under the Securities Act and the Exchange Act.
 
    All documents filed by HBOC and CyCare pursuant to Sections 13(a), 13(c), 14
or 15(d) of the Exchange Act  after the date of this Proxy  Statement/Prospectus
and  prior to  the date of  the Meeting, shall  be deemed to  be incorporated by
reference in this Proxy  Statement/Prospectus and to be  a part hereof from  the
date  of  filing of  such  documents. Any  statement  contained herein  or  in a
previously filed document incorporated or deemed to be incorporated by reference
herein shall be deemed to be modified  or superseded for purposes of this  Proxy
Statement/Prospectus  to the extent that a  statement contained herein or in any
other subsequently filed document which also is or was deemed to be incorporated
by reference herein modifies or supersedes such statement. Any such statement so
modified or superseded shall not be deemed, except as so modified or superseded,
to constitute a part of this Proxy Statement/Prospectus.
 
    The information  relating  to  HBOC  and  CyCare  contained  in  this  Proxy
Statement/Prospectus  should  be  read  together  with  the  information  in the
documents incorporated by reference.
 
   
    THIS PROXY STATEMENT/PROSPECTUS  INCORPORATES DOCUMENTS  BY REFERENCE  WHICH
ARE  NOT  PRESENTED HEREIN  OR DELIVERED  HEREWITH.  SUCH DOCUMENTS  (OTHER THAN
EXHIBITS TO SUCH DOCUMENTS UNLESS SUCH EXHIBITS ARE SPECIFICALLY INCORPORATED BY
REFERENCE) ARE AVAILABLE WITHOUT CHARGE TO ANY PERSON, INCLUDING ANY  BENEFICIAL
OWNER,  TO WHOM  THIS PROXY STATEMENT/PROSPECTUS  IS DELIVERED,  UPON WRITTEN OR
ORAL REQUEST. REQUESTS  FOR SUCH DOCUMENTS  SHOULD BE DIRECTED,  IN THE CASE  OF
HBOC  DOCUMENTS, TO HBO & COMPANY,  301 PERIMETER CENTER NORTH, ATLANTA, GEORGIA
30346, ATTENTION: ANNE DAVENPORT, TELEPHONE: (800) 426-2411, AND, IN THE CASE OF
CYCARE DOCUMENTS, TO  CYCARE SYSTEMS,  INC., 7001 NORTH  SCOTTSDALE ROAD,  SUITE
1000,  SCOTTSDALE,  ARIZONA 85253-3644,  ATTENTION: SECRETARY,  TELEPHONE: (602)
596-4300. IN  ORDER TO  ENSURE TIMELY  DELIVERY OF  THE DOCUMENTS  PRIOR TO  THE
MEETING, ANY SUCH REQUESTS SHOULD BE MADE BY AUGUST 14, 1996.
    
 
                                       5
<PAGE>
                                    SUMMARY
 
    THE  FOLLOWING SUMMARY SHOULD BE READ  IN CONJUNCTION WITH, AND IS QUALIFIED
IN ITS ENTIRETY  BY, THE  MORE DETAILED INFORMATION  AND CONSOLIDATED  FINANCIAL
STATEMENTS,  INCLUDING  NOTES  THERETO,  AND  PRO  FORMA  FINANCIAL  INFORMATION
INCLUDED OR INCORPORATED  BY REFERENCE IN  THIS PROXY STATEMENT/PROSPECTUS.  ALL
SHARE   AND  PER  SHARE   DATA  REGARDING  HBOC  COMMON   STOCK  IN  THIS  PROXY
STATEMENT/PROSPECTUS HAVE BEEN ADJUSTED  TO GIVE EFFECT  TO A TWO-FOR-ONE  STOCK
SPLIT  OF THE HBOC COMMON  STOCK, EFFECTED IN THE FORM  OF A STOCK DIVIDEND PAID
JUNE 10, 1996 TO STOCKHOLDERS OF RECORD ON MAY 27, 1996.
 
                                  THE PARTIES
 
HBO & COMPANY
 
    HBOC develops  integrated patient  care, clinical,  financial and  strategic
management  software solutions for  the healthcare industry.  These open systems
applications   facilitate   the   integration   of   clinical,   financial   and
administrative  data from a wide range  of customer systems and software. HBOC's
broad product portfolio  can be implemented  in a variety  of combinations  from
stand-alone   to   enterprisewide,   enabling  customers   to   add  incremental
capabilities to  existing  information  systems  without  making  prior  capital
investments   obsolete.  HBOC  also  provides   a  full  complement  of  network
communications  technologies,  including  wireless  capabilities,  as  well   as
outsourcing  services  that  are offered  under  contract  management agreements
whereby its  staff  manages  and operates  data  centers,  information  systems,
organizations  and business offices of  healthcare institutions of various sizes
and structures.
 
    HBOC markets  its  products  and  services  to  integrated  health  delivery
networks,  hospitals,  physicians' offices,  home health  providers, pharmacies,
reference laboratories, managed care providers and payers. At December 31, 1995,
HBOC had 2,700 customers of which 2,200 were United States community  hospitals.
Currently  there are a total of 5,300  community hospitals in the United States.
HBOC also sells its products  and services internationally through  subsidiaries
and/or  distribution agreements  in the  United Kingdom,  Canada, Ireland, Saudi
Arabia, Australia, Puerto Rico and New Zealand.
 
    On May 14, 1996, the board of directors of HBOC (the "HBOC Board")  approved
a two-for-one stock split effected in the form of a stock dividend paid June 10,
1996 to holders of record of HBOC Common Stock on May 27, 1996. Accordingly, all
share   and  per  share   data  regarding  HBOC  Common   Stock  in  this  Proxy
Statement/Prospectus have  been adjusted  to  give effect  to the  stock  split,
except as otherwise specifically noted herein.
 
    The  address and telephone number of the principal executive offices of HBOC
are 301 Perimeter Center North, Atlanta, Georgia 30346, (770) 393-6000.
 
CYCARE SYSTEMS, INC.
 
    CyCare is  a  leading  provider  of  information  systems,  related  support
services  and  electronic data  interchange ("EDI")  services to  the healthcare
industry, including  physicians,  medical  group  practices,  academic  practice
centers  and  integrated delivery  networks. CyCare's  services and  systems are
based  primarily  on  open-systems  architecture  using  software  developed  or
acquired  by  CyCare  to  improve  the  productivity  and  profitability  of its
customers. Applications  include  appointment  scheduling,  patient  and  member
registration   information,  business   office  management,   electronic  claims
processing, patient care and patient accounting.
 
    CyCare markets  its  products  and services  through  sales  representatives
located  in nine offices throughout the country. CyCare estimates that there are
over 570,000 practicing physicians  and approximately 148,000 medical  practices
in the United States. Approximately 70% of physician practices now use computers
or  computer  services  for  at  least  some  of  their  information  processing
requirements. CyCare's customers are  principally located throughout the  United
States.
 
    The  address  and telephone  number of  the  principal executive  offices of
CyCare  are  7001  North  Scottsdale  Road,  Suite  1000,  Scottsdale,   Arizona
85253-3644, (602) 596-4300.
 
                                       6
<PAGE>
                                  THE MEETING
 
   
    The  Meeting will be  held on August 21,  1996 at 9:00  a.m., local time, at
7001 North  Scottsdale Road,  Suite 1000,  Scottsdale, Arizona  85253-3644.  The
purpose of the Meeting is to consider and take action upon a proposal to approve
the  Merger Agreement. The CyCare Board has  fixed the close of business on July
16, 1996,  as the  record date  (the  "Record Date")  for the  determination  of
stockholders  entitled to vote at  the Meeting. The presence  at the Meeting, in
person or by proxy, of the holders  of a majority of the issued and  outstanding
shares  of  CyCare Common  Stock  constitutes a  quorum  for the  transaction of
business. The Merger Agreement must be approved by holders of a majority of  the
issued and outstanding shares of CyCare Common Stock. See "The Meeting."
    
 
                              THE MERGER PROPOSAL
 
RECOMMENDATION OF THE CYCARE BOARD; OPINION OF FINANCIAL ADVISOR
 
   
    The CyCare Board has unanimously approved the Merger and has determined that
the  Merger  is  fair  to,  and  in  the  best  interests  of,  CyCare  and  its
stockholders. Accordingly, the CyCare Board unanimously recommends that CyCare's
stockholders vote FOR approval of the Merger Agreement. In approving the  Merger
Agreement, the CyCare Board considered, among other things, a report and opinion
from  Broadview  Associates LLC  ("Broadview")  regarding the  fairness,  from a
financial point of view, of  the consideration to be  received in the Merger  by
the stockholders of CyCare. A copy of the opinion is attached hereto as Appendix
B.   See  "The  Merger  --  Reasons  of  CyCare  for  Engaging  in  the  Merger;
Recommendation of the  CyCare Board"  and "The  Merger --  Opinion of  Financial
Advisor of CyCare."
    
 
TERMS OF THE MERGER
 
    The  following is a  summary of certain  of the terms  and conditions of the
Merger Agreement, a copy of which is attached hereto as Appendix A.
 
    EFFECTIVE TIME.  The Merger shall become effective when both (i) the  Merger
Agreement  is adopted and  approved by the stockholders  of CyCare in accordance
with the applicable provisions of the Delaware General Corporation Law  ("DGCL")
and (ii) a certificate of merger (the "Certificate of Merger") is filed with the
Secretary  of State  of Delaware  (the time  the Merger  becomes effective being
referred to as the "Effective Time"), which is expected to occur as promptly  as
practicable  after the Meeting. See "The Merger  Proposal -- Terms of the Merger
- -- Effective Time."
 
    CONVERSION OF SHARES.  Each outstanding share of CyCare Common Stock  issued
and outstanding immediately prior to the Effective Time, shall, at the Effective
Time,  be converted into the right to receive: (i) .86 of a share of HBOC Common
Stock, if the Market Value is at least  $52.25 but not more than $65.00; (ii)  a
fractional  share determined  by dividing  $44.935 by  the Market  Value, if the
Market Value is  less than $52.25;  and (iii) a  fractional share determined  by
dividing  $55.90 by the  Market Value, if  the Market Value  is more than $65.00
(whatever basis is applicable  being referred to as  the "Exchange Ratio"),  and
less  the amount of any fractional shares paid in cash. See "The Merger Proposal
- -- Terms of the Merger -- Conversion of Shares."
 
    FRACTIONAL SHARES.   No  fractional shares  of HBOC  Common Stock  shall  be
issued  pursuant to the Merger, but in lieu thereof, a cash payment will be made
therefor. See "The Merger Proposal -- Terms of the Merger -- Fractional Shares."
 
    STOCK OPTION  AND RESTRICTED  STOCK PLANS.   Outstanding  options under  the
CyCare  Systems, Inc. 1995 Long-Term Incentive  Plan, and the predecessor CyCare
Systems, Inc. Stock Option Plan (collectively, the "Long-Term Incentive  Plan"),
and  outstanding options under the CyCare Systems, Inc. Director Stock Plan (the
"Director Stock Plan") that are fully vested  will be assumed by HBOC, by  which
assumption the optionee shall have the right to purchase the number of shares of
HBOC  Common Stock into which  the shares of CyCare  Common Stock subject to the
options would have been converted in the Merger pursuant to the Exchange  Ratio.
Additionally,  at the  Effective Time, all  shares of Restricted  Stock (as that
term is  defined  in  the  Director  Stock Plan)  as  to  which  the  period  of
 
                                       7
<PAGE>
restriction under the Director Stock Plan and related restricted stock agreement
shall  have previously expired shall be exchanged for HBOC Common Stock pursuant
to the Exchange Ratio. See "The Merger Proposal -- Terms of the Merger --  Stock
Option and Restricted Stock Plans."
 
    EMPLOYEE  STOCK  PURCHASE PLAN.    At the  written  election of  an employee
participating in  the CyCare  Systems, Inc.  Employee Stock  Purchase Plan  (the
"Employee  Stock  Purchase Plan"),  each  such employee's  stock  purchase right
outstanding as of the date of closing  of the Merger (the "Closing Date")  under
the Employee Stock Purchase Plan shall be cancelled and the holder thereof shall
receive the number of whole shares of HBOC Common Stock into which the shares of
CyCare  Common Stock issuable to  such holder as of  the Closing Date would have
been converted.  Absent such  election, HBOC  shall assume  CyCare's rights  and
obligations  under each such stock purchase  right outstanding as of the Closing
Date. See "Risk Factors  -- Election Concerning  Employee Stock Purchase  Plan,"
and  "The Merger  Proposal --  Terms of  the Merger  -- Employee  Stock Purchase
Plan."
 
    EXCHANGE OF CERTIFICATES.  Promptly after the Effective Time, SunTrust Bank,
Atlanta (the  "Exchange Agent")  will mail  to  each record  holder (as  of  the
Effective  Time) of an outstanding  certificate or certificates that immediately
prior to  the Effective  Time represented  outstanding shares  of CyCare  Common
Stock  (the "Certificates"), a letter of transmittal and instructions for use in
effecting  the  surrender  of  the  Certificates  for  exchange  and/or  payment
therefor.  Until surrendered and exchanged,  each Certificate shall evidence the
ownership of the  number of whole  shares of  HBOC Common Stock  into which  the
shares of CyCare Common Stock represented thereby shall have been converted, and
the  right to  receive cash  in lieu  of any  fractional share.  See "The Merger
Proposal -- Terms of the Merger -- Exchange of Certificates."
 
    LIMITATIONS ON TRANSFERABILITY OF HBOC COMMON STOCK.  Shares of HBOC  Common
Stock  received  by certain  persons  deemed to  be  "affiliates" of  CyCare for
purposes  of  Rule  145  under  the  Securities  Act  will  be  subject  to  the
restrictions  imposed by such rule. In accordance with Rule 145, an affiliate of
CyCare receiving HBOC Common Stock issued in the Merger may not sell such shares
except pursuant  to  the  volume  and  manner  of  sale  limitations  and  other
requirements  specified in  such rule or  pursuant to  an effective registration
statement under the Securities Act.  In addition, certain CyCare affiliates  are
subject to certain restrictions on transfer of both CyCare Common Stock and HBOC
Common  Stock prior to  and following the  Effective Time to  support pooling of
interests accounting treatment of the  transaction. See "The Merger Proposal  --
Terms of the Merger -- Limitations on Transferability of HBOC Common Stock."
 
    CONDITIONS,  WAIVER.  The obligations  of HBOC and HBOC-GA  on the one hand,
and of CyCare on the  other hand, to consummate  the Merger are contingent  upon
and  subject to the  satisfaction or waiver of  certain conditions including the
approval of the  Merger and  the Merger Agreement  by holders  of the  requisite
number  of shares of CyCare  Common Stock. See "The  Merger Proposal -- Terms of
the Merger -- Conditions, Waiver."
 
   
    HART-SCOTT-RODINO.   The  Merger  is  subject to  the  requirements  of  the
Hart-Scott-Rodino  Antitrust  Improvements Act  of  1976, as  amended  (the "HSR
Act"), which provides that certain  transactions (including the Merger) may  not
be  consummated until  certain information has  been furnished  to the Antitrust
Division of the Department of Justice (the "Antitrust Division") and the Federal
Trade Commission (the "FTC") and  certain waiting period requirements have  been
satisfied. HBOC and CyCare filed the required information and materials with the
Antitrust  Division  and the  FTC on  May 24,  1996 and  responded to  a written
request for additional information  received on June 21,  1996. HBOC and  CyCare
were  notified that the waiting period was terminated on July 16, 1996. See "The
Merger Proposal -- Terms of the Merger -- Hart-Scott-Rodino."
    
 
    TERMINATION.   The  Merger  may be  terminated  at  any time  prior  to  the
Effective  Time of the Merger  by: (i) mutual consent of  the HBOC Board and the
CyCare Board, notwithstanding  the prior  approval by  the CyCare  stockholders;
(ii)  HBOC, in the  event of material condemnation,  destruction, loss or damage
due to fire or other casualty to the business assets of CyCare; (iii) HBOC-GA or
CyCare, after September 30, 1996 if the other party fails to fulfill any of  its
conditions,  unless fulfillment  has been frustrated  or made  impossible by the
party seeking termination; (iv)  CyCare, if, in the  good faith exercise of  its
fiduciary  duties to the stockholders of CyCare  in the context of a proposal to
acquire
 
                                       8
<PAGE>
CyCare by  another party,  the CyCare  Board decides  that such  termination  is
required.  In  the  event  the  Merger  Agreement  is  terminated  by  CyCare in
accordance with (iv) above, CyCare will be obligated to pay HBOC and HBOC-GA $10
million in liquidated damages. See "The  Merger Proposal -- Terms of the  Merger
- -- Termination."
 
ACCOUNTING TREATMENT
 
    Prior  to consummation  of the  Merger, each  of the  parties to  the Merger
Agreement shall have received letters, dated as of the date hereof and as of the
Closing Date,  from Ernst  & Young  LLP and  Arthur Andersen  LLP regarding  the
appropriateness  of  pooling  of  interests  accounting  for  the  Merger  under
Accounting Principles  Board  Opinion  No.  16  if  closed  and  consummated  in
accordance with the Merger Agreement.
 
CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
    It  is  a condition  to the  closing of  the Merger  that CyCare  shall have
received an  opinion  of  its  counsel, subject  to  the  assumptions  contained
therein,  to the  effect that  no gain or  loss will  be recognized  by a CyCare
stockholder upon the exchange of the shares of CyCare Common Stock for shares of
HBOC Common Stock pursuant to the Merger, except on the receipt of cash in  lieu
of a fractional share interest in HBOC Common Stock. See "The Merger Proposal --
Certain Federal Income Tax Consequences."
 
NO APPRAISAL RIGHTS
 
    Because  CyCare Common Stock is listed on the NYSE, the holders of shares of
CyCare Common Stock will not be entitled to appraisal rights pursuant to Section
262 of the DGCL in  connection with the Merger. See  "The Merger Proposal --  No
Appraisal Rights."
 
                                     OTHER
 
INTERESTS OF CERTAIN PERSONS
 
   
    SECURITY  OWNERSHIP OF DIRECTORS  AND EXECUTIVE OFFICERS.   As of the Record
Date, directors  and executive  officers  of CyCare  and their  affiliates  were
beneficial   owners  of  439,734  outstanding  shares  of  CyCare  Common  Stock
representing approximately  8.7%  of the  total  issued and  outstanding  CyCare
Common  Stock.  Holders of  all of  such  shares have  advised CyCare  that they
presently intend to vote or direct the vote of all shares of CyCare Common Stock
over which they have voting control in favor of the Merger Agreement.  Directors
and   executive  officers  of  HBOC  and  their  affiliates  beneficially  owned
approximately 3.7% of the outstanding shares  (giving effect to the exercise  of
their  presently exercisable  stock options)  of HBOC  Common Stock  at July 16,
1996. See "Interests of Certain Persons in Each of HBOC and CyCare."
    
 
    INTERESTS OF CERTAIN PERSONS  IN MATTERS TO BE  ACTED UPON.  In  considering
the  Merger,  stockholders of  CyCare should  be aware  that certain  members of
management and  the  CyCare Board  have  interests in  the  Merger that  are  in
addition  to,  or  different  from,  the  interests  of  stockholders  of CyCare
generally. See  "Interests of  Certain Persons  in Each  of HBOC  and CyCare  --
Interests of Certain Persons in Matters to be Acted Upon."
 
COMPARISON OF STOCKHOLDER RIGHTS
 
    HBOC  and CyCare are each incorporated under  Delaware law. For a summary of
material differences between the rights of  holders of shares of each of  CyCare
Common  Stock and  HBOC Common  Stock, see "Comparison  of Rights  of Holders of
Shares of Each of HBOC Common Stock and CyCare Common Stock."
 
CERTAIN MARKET INFORMATION
 
    HBOC Common Stock is traded on the Nasdaq NM under the symbol "HBOC." CyCare
Common Stock is traded  on the NYSE  under the symbol  "CYS." The closing  sales
prices  per share of HBOC  Common Stock and CyCare Common  Stock on May 9, 1996,
the last trading  day preceding the  announcement of the  proposed Merger,  were
$56.50 and $46.00, respectively. See "Certain Market Information."
 
RISK FACTORS
 
    The  stockholders of  CyCare should carefully  review the  matters set forth
under "Risk Factors."
 
                                       9
<PAGE>
                             SUMMARY FINANCIAL DATA
 
    The following summary historical financial data for each of HBOC and  CyCare
should be read in conjunction with the financial statements and notes thereto of
HBOC   and   CyCare,  incorporated   by  reference   elsewhere  in   this  Proxy
Statement/Prospectus.
 
                               HBO & COMPANY (1)
                          (FROM CONTINUING OPERATIONS)
                    (000 OMITTED EXCEPT FOR PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                                                    AT AND
                                                                                                   FOR THE
                                                                                                 THREE MONTHS
                                             AT AND FOR THE YEAR ENDED DECEMBER 31,            ENDED MARCH 31,
                                      -----------------------------------------------------  --------------------
                                      1991 (2)     1992       1993       1994     1995 (3)     1995       1996
                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
<S>                                   <C>        <C>        <C>        <C>        <C>        <C>        <C>
INCOME STATEMENT DATA:
  Revenue...........................  $ 184,859  $ 228,988  $ 267,147  $ 357,436  $ 495,595  $  99,183  $ 145,078
  Operating Income..................  $   6,560  $  22,600  $  31,883  $  53,042  $  95,722  $  18,085  $  31,763
  Income Before Income Taxes........  $   5,129  $  22,165  $  31,495  $  52,592  $  94,423  $  17,843  $  32,287
  Net Income........................  $   3,949  $  14,629  $  18,897  $  31,555  $  56,654  $  10,706  $  19,372
  Primary Earnings Per Share........  $     .06  $     .21  $     .27  $     .43  $     .72  $     .14  $     .23
  Fully Diluted Earnings Per
   Share............................  $     .06  $     .21  $     .26  $     .43  $     .72  $     .14  $     .23
  Weighted Average Shares
   Outstanding (Fully Diluted)......     64,148     69,904     72,020     73,334     79,023     74,198     83,828
  Cash Dividends Per Share..........  $    .075  $    .075  $    .075  $     .08  $     .08  $     .02  $     .02
 
BALANCE SHEET DATA:
  Working Capital...................  $  18,369  $  23,969  $  34,627  $  11,160  $  47,250  $  23,345  $  67,498
  Total Assets......................  $ 114,490  $ 125,689  $ 156,182  $ 264,132  $ 535,134  $ 274,256  $ 545,211
  Long-Term Debt....................  $  20,752  $  --      $  --      $     252  $     582  $   5,583  $     446
  Stockholders' Equity..............  $  25,706  $  61,608  $  83,182  $ 124,777  $ 318,730  $ 139,174  $ 344,172
</TABLE>
 
- ------------------------------
(1) All share  and per  share amounts  have been  restated to  reflect the  1996
    two-for-one stock split effected in the form of a stock dividend.
(2)  1991  Income Statement  related items  exclude  the nonrecurring  charge of
    $10,883 and include the dilutive effect  of stock options. The net loss  was
    ($4,442)  and  fully  diluted  loss  per  share  was  ($.07)  including  the
    nonrecurring charge.
(3) 1995  Income Statement  related  items exclude  the nonrecurring  charge  of
    $136,481  and include the dilutive effect of stock options. The net loss was
    ($25,235) and  fully  diluted  loss  per  share  was  ($.33)  including  the
    nonrecurring charge.
 
                              CYCARE SYSTEMS, INC.
                    (000 OMITTED EXCEPT FOR PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                                                    AT AND
                                                                                                   FOR THE
                                                                                                 THREE MONTHS
                                             AT AND FOR THE YEAR ENDED DECEMBER 31,            ENDED MARCH 31,
                                      -----------------------------------------------------  --------------------
                                        1991       1992       1993       1994       1995       1995       1996
                                      ---------  ---------  ---------  ---------  ---------  ---------  ---------
<S>                                   <C>        <C>        <C>        <C>        <C>        <C>        <C>
INCOME STATEMENT DATA:
  Revenue...........................  $  75,444  $  75,635  $  71,062  $  53,812  $  62,922  $  15,761  $  15,644
  Income (Loss) Before Income
   Taxes............................  $   1,350  $   2,493  $  (6,104) $   5,049  $   3,088  $   1,648  $   1,862
  Net Income (Loss).................  $     612  $   1,499  $  (7,761) $   3,020  $   1,953  $   1,013  $   1,173
  Earnings (Loss) Per Share.........  $     .11  $     .27  $   (1.39) $     .60  $     .38  $     .20  $     .23
  Weighted Average Shares
   Outstanding (Primary)............      5,586      5,623      5,579      5,018      5,183      5,094      5,189
  Cash Dividends Per Share..........  $  --      $  --      $  --      $  --      $  --      $  --      $  --
 
BALANCE SHEET DATA:
  Working Capital...................  $   8,712  $   9,867  $  18,287  $  15,255  $  17,607  $  17,000  $  17,117
  Total Assets......................  $  64,558  $  60,843  $  48,730  $  44,396  $  46,273  $  46,007  $  46,256
  Long-Term Debt....................  $   8,305  $   7,200  $   5,690  $   4,153  $   2,853  $   3,821  $   2,533
  Stockholders' Equity..............  $  37,014  $  37,738  $  28,114  $  25,223  $  30,085  $  28,365  $  30,345
</TABLE>
 
                                       10
<PAGE>
                 UNAUDITED PRO FORMA SUMMARY FINANCIAL DATA (1)
 
    The following unaudited pro forma summary financial data is presented giving
effect to the Merger using the pooling of interests method of accounting.
 
                     HBO & COMPANY AND CYCARE SYSTEMS, INC.
                                 (000 OMITTED)
 
<TABLE>
<CAPTION>
                                                                                  FOR THE
                                                                                 YEAR ENDED     AT AND FOR THE
                                                                                DECEMBER 31,  THREE MONTHS ENDED
                                                                                  1995 (2)      MARCH 31, 1996
                                                                                ------------  -------------------
<S>                                                                             <C>           <C>
INCOME STATEMENT DATA:
  Revenue.....................................................................   $  557,636       $   160,531
  Income Before Income Taxes..................................................   $   97,511       $    34,149
  Net Income..................................................................   $   58,607       $    20,545
  Weighted Average Shares Outstanding (Fully Diluted) (3).....................       83,486            88,292
BALANCE SHEET DATA:
  Working Capital.............................................................                    $    84,615
  Total Assets................................................................                    $   591,467
  Long-Term Debt..............................................................                    $     2,979
  Stockholders' Equity........................................................                    $   374,517
</TABLE>
 
- ------------------------
(1)  The  Unaudited  Pro Forma  Summary  Financial  Data provided  above  is not
    necessarily indicative  of  the  results  of  operations  or  the  financial
    position  which would have been attained  had the Merger been consummated as
    of the  indicated  dates  or which  may  be  attained in  the  future.  This
    Unaudited  Pro Forma  Summary Financial Data  should be  read in conjunction
    with the  historical financial  statements  of HBOC  and CyCare,  which  are
    incorporated  by reference  elsewhere in  this document.  All share  and per
    share amounts have been restated to reflect the HBOC 1996 two-for-one  stock
    split effected in the form of a stock dividend.
 
(2)  1995 Income Statement related items exclude the HBOC nonrecurring charge of
    $136,481 related to  1995 acquisitions  and include the  dilutive effect  of
    stock  options. The loss before income taxes  was ($38,970) and the net loss
    was ($23,282), including the nonrecurring charge.
 
(3) Based on an assumed  Exchange Ratio of .86 of  a share of HBOC Common  Stock
    for each share of CyCare Common Stock.
 
                                       11
<PAGE>
                           COMPARATIVE PER SHARE DATA
 
    The following tables set forth certain per share data for HBOC and CyCare on
both  a historical  and pro  forma combined basis,  giving effect  to the Merger
using the pooling  of interests method  of accounting. All  share and per  share
amounts  have been  restated to  reflect the  HBOC 1996  two-for-one stock split
effected in the form of a stock dividend.
 
                          HBO & COMPANY -- HISTORICAL
 
<TABLE>
<CAPTION>
                                                                                                         AT AND FOR THE
                                                                        AT AND FOR THE YEAR               THREE MONTHS
                                                                        ENDED DECEMBER 31,              ENDED MARCH 31,
                                                               -------------------------------------  --------------------
                                                                   1993        1994         1995        1995       1996
                                                               ------------  ---------  ------------  ---------  ---------
<S>                                                            <C>           <C>        <C>           <C>        <C>
PER SHARE DATA:
  Book Value.................................................  $    1.22     $    1.77  $    3.97     $    1.96  $    4.26
  Cash Dividends Declared....................................  $     .075    $     .08  $     .08     $     .02  $     .02
  Fully Diluted Earnings.....................................  $     .26     $     .43  $     .72(1)  $     .14  $     .23
</TABLE>
 
- ------------------------
(1) The stated fully diluted earnings per  share of $.72 excludes the effect  of
    the  $136  million  nonrecurring  charge related  to  1995  acquisitions and
    includes the dilutive effect of  stock options. Reported fully diluted  loss
    per share for the period was ($.33).
 
                       CYCARE SYSTEMS, INC. -- HISTORICAL
 
<TABLE>
<CAPTION>
                                                                                                         AT AND FOR THE
                                                                        AT AND FOR THE YEAR               THREE MONTHS
                                                                        ENDED DECEMBER 31,              ENDED MARCH 31,
                                                               -------------------------------------  --------------------
                                                                   1993        1994         1995        1995       1996
                                                               ------------  ---------  ------------  ---------  ---------
<S>                                                            <C>           <C>        <C>           <C>        <C>
PER SHARE DATA:
  Book Value.................................................  $    5.19     $    5.24  $    5.90     $    5.67  $    6.00
  Cash Dividends Declared....................................  $    --       $  --      $    --       $  --      $  --
  Primary Earnings (Loss)....................................  $   (1.39)    $     .60  $     .38     $     .20  $     .23
</TABLE>
 
         PRO FORMA COMBINED HBO & COMPANY AND CYCARE SYSTEMS, INC. (1)
                    (USING AN ASSUMED MARKET VALUE PER SHARE
                     OF HBOC COMMON STOCK OF $50.00 AND AN
                       ASSUMED EXCHANGE RATIO OF .89870)
 
<TABLE>
<CAPTION>
                                                                                                         AT AND FOR THE
                                                                        AT AND FOR THE YEAR               THREE MONTHS
                                                                        ENDED DECEMBER 31,              ENDED MARCH 31,
                                                               -------------------------------------  --------------------
                                                                   1993        1994         1995        1995       1996
                                                               ------------  ---------  ------------  ---------  ---------
<S>                                                            <C>           <C>        <C>           <C>        <C>
PER SHARE DATA:
  Book Value.................................................  $    1.52     $    2.01  $    4.11     $    2.22  $    4.39
  Cash Dividends Declared....................................  $     .075    $     .08  $     .08     $     .02  $     .02
  Fully Diluted Earnings.....................................  $     .14     $     .44  $     .70(2)  $     .15  $     .23
</TABLE>
 
                                       12
<PAGE>
         PRO FORMA COMBINED HBO & COMPANY AND CYCARE SYSTEMS, INC. (1)
                    (USING AN ASSUMED MARKET VALUE PER SHARE
                        OF HBOC COMMON STOCK OF GREATER
                        THAN $52.25 AND LESS THAN $65.50
                    AND AN ASSUMED EXCHANGE RATIO OF .86000)
 
<TABLE>
<CAPTION>
                                                                                                         AT AND FOR THE
                                                                         AT AND FOR THE YEAR              THREE MONTHS
                                                                          ENDED DECEMBER 31,            ENDED MARCH 31,
                                                                  ----------------------------------  --------------------
                                                                    1993       1994         1995        1995       1996
                                                                  ---------  ---------  ------------  ---------  ---------
<S>                                                               <C>        <C>        <C>           <C>        <C>
PER SHARE DATA:
  Book Value....................................................  $    1.53  $    2.01  $    4.12     $    2.22  $    4.40
  Cash Dividends Declared.......................................  $    .075  $     .08  $     .08     $     .02  $     .02
  Fully Diluted Earnings........................................  $     .15  $     .45  $     .70(2)  $     .15  $     .23
</TABLE>
 
         PRO FORMA COMBINED HBO & COMPANY AND CYCARE SYSTEMS, INC. (1)
                    (USING AN ASSUMED MARKET VALUE PER SHARE
                     OF HBOC COMMON STOCK OF $67.50 AND AN
                       ASSUMED EXCHANGE RATIO OF .82815)
 
<TABLE>
<CAPTION>
                                                                                                         AT AND FOR THE
                                                                         AT AND FOR THE YEAR              THREE MONTHS
                                                                          ENDED DECEMBER 31,            ENDED MARCH 31,
                                                                  ----------------------------------  --------------------
                                                                    1993       1994         1995        1995       1996
                                                                  ---------  ---------  ------------  ---------  ---------
<S>                                                               <C>        <C>        <C>           <C>        <C>
PER SHARE DATA:
  Book Value....................................................  $    1.53  $    2.02  $    4.13     $    2.23  $    4.41
  Cash Dividends Declared.......................................  $    .075  $     .08  $     .08     $     .02  $     .02
  Fully Diluted Earnings........................................  $     .15  $     .45  $     .70(2)  $     .15  $     .23
</TABLE>
 
- ------------------------
(1)  The  unaudited Pro  Forma Combined  Per  Share Data  provided above  is not
    necessarily indicative  of  the  results  of  operations  or  the  financial
    position  which would have been attained  had the Merger been consummated on
    the indicated dates or which may be  attained in the future. This Pro  Forma
    Combined  Per Share Data  should be read in  conjunction with the historical
    consolidated financial statements of HBOC and CyCare, which are incorporated
    by reference elsewhere in this Proxy Statement/Prospectus.
 
(2) The pro forma fully  diluted earnings per share  for all three tables  above
    excludes  the effect of the HBOC $136 million nonrecurring charge related to
    1995 acquisitions and includes the  dilutive effect of stock options.  Fully
    diluted  loss per  share for  1995 including  the nonrecurring  charge is as
    follows:
 
<TABLE>
<CAPTION>
                                                                                     EXCHANGE RATIO OF
                                                                              -------------------------------
                                                                               .89870     .86000     .82815
                                                                              ---------  ---------  ---------
<S>                                                                           <C>        <C>        <C>
Fully Diluted Loss Per Share................................................  $    (.29) $    (.29) $    (.29)
</TABLE>
 
                                       13
<PAGE>
                                  RISK FACTORS
 
INTERESTS OF CERTAIN OFFICERS AND DIRECTORS IN THE MERGER
 
    Certain  officers and the  directors of CyCare have  interests in the Merger
that differ  from those  of CyCare  stockholders generally.  As a  result,  such
officers  and directors could be more likely to favor consummation of the Merger
than stockholders  generally. See  "Interests  of Certain  Persons in  HBOC  and
CyCare -- Interests of Certain Persons in Matters to be Acted Upon."
 
ELECTION CONCERNING EMPLOYEE STOCK PURCHASE PLAN
 
    Participants  in the Employee Stock Purchase  Plan may elect to cancel their
stock purchase rights  and receive shares  of HBOC Common  Stock in the  Merger.
Participants  in the  Employee Stock  Purchase Plan who  do not  elect to cancel
their stock purchase rights in  the Merger will have  the right to purchase  the
increased  number of  shares of HBOC  Common Stock purchasable  pursuant to such
plan as a result  of continued payroll deductions  thereunder in the event  that
they  are still  employed on  December 31,  1996. However,  in the  event that a
participant does not elect to cancel his or her stock purchase rights and, prior
to December 31, 1996, such participant ceases to be an employee of HBOC for  any
reason,  such former employee will be entitled only to receive the amount of his
or her payroll deductions with  interest thereon accrued at  the rate of 6%  per
annum.
 
                           CERTAIN MARKET INFORMATION
 
HBOC
 
    HBOC  Common Stock is traded  on the Nasdaq NM  under the symbol "HBOC." The
table below  presents  the quarterly  high  and  low closing  sales  prices  and
dividend  information  for HBOC  Common  Stock as  furnished  by Nasdaq  for the
periods indicated after restating  for the two-for-one  stock split effected  in
the form of a stock dividend paid June 10, 1996.
 
   
<TABLE>
<CAPTION>
                                                                                                DIVIDENDS
                                                                                                 DECLARED
                        YEAR ENDED DECEMBER 31:                             HIGH        LOW     PER SHARE
                      ---------------------------                         ---------  ---------  ----------
<S>                                                                       <C>        <C>        <C>
1994
  First Quarter.........................................................  $   13.19  $   10.44   $   .02
  Second Quarter........................................................  $   15.57  $   10.38   $   .02
  Third Quarter.........................................................  $   17.25  $   12.25   $   .02
  Fourth Quarter........................................................  $   18.07  $   14.50   $   .02
1995
  First Quarter.........................................................  $   21.88  $   16.75   $   .02
  Second Quarter........................................................  $   27.25  $   20.25   $   .02
  Third Quarter.........................................................  $   32.00  $   26.41   $   .02
  Fourth Quarter........................................................  $   42.88  $   31.13   $   .02
1996
  First Quarter.........................................................  $   49.81  $   34.38   $   .02
  Second Quarter........................................................  $   68.75  $   49.38   $   .02
  Third Quarter (through July 17, 1996).................................  $   68.63  $   57.00
</TABLE>
    
 
   
    The closing sales price for a share of HBOC Common Stock on May 9, 1996, the
last  trading day preceding the announcement of the proposed Merger, was $56.50.
As of July 16, 1996, there were approximately 2,029 holders of record of  shares
of HBOC Common Stock.
    
 
                                       14
<PAGE>
CYCARE
 
    CyCare  Common  Stock is  traded on  the  NYSE under  the symbol  "CYS." The
following table sets forth the quarterly high and low closing prices for  CyCare
Common  Stock as  furnished by  the NYSE for  the periods  indicated. CyCare has
never declared a dividend on CyCare Common Stock.
 
   
<TABLE>
<CAPTION>
YEAR ENDED DECEMBER 31:                               HIGH        LOW
- --------------------------------------------------  ---------  ---------
<S>                                                 <C>        <C>
1994
  First Quarter...................................  $   11.13  $    7.75
  Second Quarter..................................  $   12.50  $    9.63
  Third Quarter...................................  $   13.75  $   11.50
  Fourth Quarter..................................  $   15.88  $   10.75
1995
  First Quarter...................................  $   23.38  $   14.50
  Second Quarter..................................  $   27.50  $   22.13
  Third Quarter...................................  $   39.50  $   27.25
  Fourth Quarter..................................  $   34.50  $   22.63
1996
  First Quarter...................................  $   32.00  $   23.13
  Second Quarter..................................  $   52.13  $   27.13
  Third Quarter (through July 17, 1996)...........  $   53.00  $   48.38
</TABLE>
    
 
   
    The closing sales price for a share  of CyCare Common Stock on May 9,  1996,
the  last trading  day preceding  the announcement  of the  proposed Merger, was
$46.00. As of July 16, 1996, there  were approximately 470 holders of record  of
shares of CyCare Common Stock.
    
 
                                  THE MEETING
 
   
    This   Proxy  Statement/Prospectus  is  furnished  in  connection  with  the
solicitation of proxies by the CyCare Board for the Meeting to be held on August
21, 1996 at the time and place and for the purpose set forth in the accompanying
Notice of Special Meeting.
    
 
    Any CyCare  stockholder who  has previously  delivered a  properly  executed
proxy  may revoke  such proxy at  any time before  its exercise. A  proxy may be
revoked either by (i) delivering to the Secretary of CyCare prior to the Meeting
either a written revocation  of such proxy  or a duly  executed proxy bearing  a
later  date or (ii)  attending the Meeting  and voting in  person, regardless of
whether a proxy has previously been given. All valid, unrevoked proxies will  be
voted  as directed. In the  absence of any contrary  directions, proxies will be
voted in favor of the proposal set  forth in the Notice of Special Meeting  and,
with  respect to such other matters as  may properly come before the Meeting, in
the discretion of the appointed proxies.
 
   
    Only holders of record of CyCare Common Stock as of the close of business on
July 16, 1996 will be entitled to vote at the Meeting. At that date, there  were
5,067,670  shares of CyCare Common Stock outstanding, 439,734 of which, or 8.7%,
were beneficially owned by directors and executive officers of CyCare and  their
affiliates.  Each share of  CyCare Common Stock  is entitled to  one vote on all
matters on which stockholders may vote.  The presence at the Meeting, in  person
or  by proxy, of the holders of a  majority of the issued and outstanding shares
of CyCare Common Stock constitutes a quorum for the transaction of business. The
Merger Agreement must be  approved by holders  of a majority  of the issued  and
outstanding  shares  of  CyCare Common  Stock.  Abstentions will  be  counted in
determining whether a quorum is present, will be considered present and entitled
to vote,  and will  thus have  the effect  of a  negative vote.  If a  proxy  is
returned  by a broker or other stockholder  who does not have authority to vote,
does not give authority to  a proxy to vote, or  withholds authority to vote  on
one  or more matters as to any shares, such shares will be considered present at
the Meeting for purposes of determining a quorum, but will not be considered for
purposes of calculating the vote with respect to such matters.
    
 
                                       15
<PAGE>
   
    The proxy solicitation is being made primarily by mail, although proxies may
be solicited by personal interview,  facsimile or other means of  communication.
CyCare  will  pay  the cost  of  this  solicitation, including  the  charges and
expenses of brokerage  firms and  others who forward  solicitation materials  to
beneficial  owners of  the CyCare  Common Stock.  CyCare has  arranged for First
Chicago Trust  Company of  New  York ("First  Chicago") and  Corporate  Investor
Communications,  Inc. ("CIC") to serve as its proxy solicitation agents. In such
capacity, First  Chicago will  coordinate and  oversee the  distribution of  the
proxy   materials  to,  and  the  return  of  the  proxy  cards  by,  registered
stockholders, and CIC will provide  similar services for beneficial owners.  The
fee for such services is estimated to be $1,750 for First Chicago and $1,500 for
CIC,    plus    their    respective   out-of-pocket    expenses.    This   Proxy
Statement/Prospectus and the proxy card are  being mailed to stockholders on  or
about July 19, 1996.
    
 
                              THE MERGER PROPOSAL
 
BACKGROUND OF THE MERGER
 
    CyCare  has utilized Broadview for investment banking and financial advisory
services since 1978.  On December  14, 1995, at  a general  business meeting  of
representatives  of  Broadview and  HBOC at  which  various topics  and business
opportunities were discussed,  representatives of HBOC  made Broadview aware  of
its  interest in exploring the possibility of entering into a strategic business
combination with CyCare. Later  that month, a  representative of HBOC  contacted
Bernard  Goldstein, a Managing Director of  Broadview, requesting that a meeting
be arranged between representatives of CyCare and HBOC.
 
    On January 9,  1996, Jim  H. Houtz, Chairman  of the  Board, President,  and
Chief  Executive Officer  of CyCare, met  with Charles W.  McCall, President and
Chief Executive Officer  of HBOC, Jay  P. Gilbertson, Senior  Vice President  --
Finance and Chief Financial Officer of HBOC, and Russell G. Overton, Senior Vice
President  -- Business Development  of HBOC, in Phoenix,  Arizona to discuss the
possibility of HBOC entering into a strategic business combination with  CyCare.
At  this  meeting,  the  parties exchanged  publicly  available  information and
presented general overviews of their respective businesses, strategic direction,
products, services, market presence, and management personnel.
 
    On February 16, 1996, Messrs. Houtz and Goldstein met in Phoenix to  discuss
the  January  9  meeting. At  this  meeting,  Messrs. Houtz  and  Goldstein also
developed a list of two additional public companies (hereinafter referred to  as
"Company  No. 1"  and "Company No.  2") for CyCare's  consideration as potential
candidates for  a business  combination. These  companies were  selected on  the
basis  of  their  perceived  status  as  leading  companies  in  the  healthcare
information  systems   industry  and   because   of  their   previous   business
relationships with CyCare.
 
    On  February  22, 1996,  Mr.  McCall sent  Mr.  Houtz a  letter  by telecopy
inviting him to come  to HBOC's corporate headquarters  in Atlanta, Georgia  for
further  discussions  regarding  a  possible  business  combination  of  the two
companies. Mr. Houtz  called Mr. McCall  that day  and advised him  that due  to
prior  business commitments  he would  be unable  to meet  with him  until early
April. Thereafter, representatives of HBOC contacted Mr. Goldstein several times
during the  month  of  February  to  reiterate  HBOC's  interest  in  continuing
discussions with CyCare.
 
    On  March 6, 1996,  Mr. Houtz met  with representatives of  Company No. 1 to
explore the possibility of a business combination of the two companies. At  this
meeting,  the  parties reviewed  generally  their respective  product  lines and
product direction. The parties agreed to  continue these discussions at a  later
date.
 
    On  March 7, 1996,  Mr. McCall sent  a draft letter  to Mr. Houtz expressing
HBOC's interest in CyCare.  This letter also contemplated  the merger of  CyCare
with HBOC in which the stockholders of CyCare would receive shares of HBOC, on a
tax  free basis, based on  an exchange ratio of .84  shares (or an implied value
per share of CyCare Common Stock of $48) of HBOC Common Stock for each share  of
CyCare  Common  Stock in  a  transaction to  be accounted  for  as a  pooling of
interests.
 
                                       16
<PAGE>
    On March 12, 1996, Mr. McCall sent a  letter to Mr. Houtz and to the  CyCare
Board,  identical to the letter previously sent  on March 7. Mr. Houtz responded
in writing  to  Mr.  McCall's letter,  advising  Mr.  McCall that  he  would  be
unavailable to meet until early April to discuss HBOC's interest in CyCare.
 
    On  March 18, 1996, a special meeting of  the CyCare Board was held at which
all members were present except  for Dr. James L.  Schamadan, who was unable  to
attend  due to a prior  commitment. During that meeting,  Mr. Houtz apprised the
CyCare Board of the  recent discussions with HBOC  and Company No. 1,  regarding
the possibility of entering into a strategic business combination with CyCare as
well  as  the belief  that Company  No. 2  could also  be interested  based upon
general remarks made  to Mr.  Houtz during  the preceding  eighteen months.  Mr.
Houtz  presented the CyCare Board  with an overview of  each of these companies,
their respective operations, the various legal alternatives for structuring such
a transaction,  and the  merits  of exploring  these alternatives  further,  and
responded  to questions from CyCare Board  members regarding those subjects. Mr.
Houtz then  advised  the  CyCare  Board that,  subject  to  the  CyCare  Board's
approval,  he and Mark R. Schonau, Chief  Financial Officer of CyCare, had plans
to meet with representatives of each of these companies during the first week of
April. He also advised the CyCare Board  that A. Theodore Engkvist, a member  of
the CyCare Board, and Mr. Goldstein would likely participate in certain of these
meetings. Following this discussion, the CyCare Board directed Mr. Houtz to meet
with these companies in accordance with his current plans.
 
    Also  on March 18, 1996, CyCare entered into confidentiality agreements with
HBOC and with the  other two public companies  to facilitate the review  process
for a potential business combination.
 
    On  April 2,  1996, Messrs.  Houtz and  Schonau met  with representatives of
Company No.  1 to  discuss generally  the possibility  of a  strategic  business
combination  of the two  companies. At this meeting,  the parties began informal
discussions  regarding  the  potential  synergies  that  could  result  from   a
combination  of  the  companies, particularly  the  ability to  offer  a broader
product line and  additional services  to their existing  markets, and  expanded
sales  forces and research  and development capabilities.  The parties discussed
generally the  cost  savings  that  could  result  from  a  combination  of  the
companies,  focusing on the  possible consolidation of  office locations and the
elimination of certain management and personnel redundancies that would exist on
a post-merger basis. The parties also began preliminary pricing discussions  and
discussed  the  impact  (accretive versus  dilutive)  of such  a  transaction on
Company No.  1's  stock. Following  these  discussions, the  representatives  of
Company  No. 1  agreed that  they would  return to  their offices  to review the
matters discussed at  this meeting  and to  make a  determination regarding  the
price they would be willing to offer CyCare in a merger transaction.
 
    On  April 3, 1996, Messrs. Houtz, Schonau, Engkvist and Goldstein met with a
representative of  Company No.  2  to discuss  generally  the possibility  of  a
business   combination  of   the  two   companies.  During   that  meeting,  the
representative made  a preliminary  proposal which  contemplated the  merger  of
CyCare  with Company No. 2 in which the CyCare stockholders would receive shares
of Company  No. 2  at  a value  per share  of  CyCare Common  Stock of  $47.  In
addition,  the  parties  began  informal  discussions  regarding  the  potential
synergies and  cost  savings  that  could  result  from  a  combination  of  the
companies,  which synergies and  cost savings included  matters similar to those
discussed at the April 2 meeting described above.
 
    On April 4,  1996, Messrs.  Houtz, Schonau,  Engkvist and  Goldstein met  in
Atlanta  with Messrs. McCall, Gilbertson and  Overton to discuss HBOC's interest
in acquiring CyCare and the terms set forth in Mr. McCall's letter of March  12,
1996 . During that meeting, the parties began to discuss the potential synergies
that  could result  from a  combination of  the two  companies, focusing  on the
complementary nature  of the  companies' respective  products, particularly  the
fact  that  HBOC's  products  serve  the  hospital  segment  of  the  healthcare
information systems industry and CyCare's products serve the physician  practice
segment  of such industry. The parties  also discussed various cost savings that
could result on  a post-merger  basis, including  the ability  to combine  sales
forces and
 
                                       17
<PAGE>
research  and development efforts, as well  as elimination of certain management
and  personnel  redundancies.  The   parties  also  began  preliminary   pricing
discussions  and  discussed the  impact (accretive  versus  dilutive) of  such a
transaction on HBOC's stock.
 
    On April 13, 1996, Mr. Houtz received a telephone call from a representative
of Company No. 1, who made a preliminary proposal which contemplated the  merger
of  CyCare with  Company No.  1 in which  the CyCare  stockholders would receive
shares of Company No. 1 with an  implied value per share of CyCare Common  Stock
of $46.10.
 
    On  April 23, 1996, a special meeting of  the CyCare Board was held at which
all members were  present. During  that meeting,  Mr. Houtz  briefed the  CyCare
Board  on the prior discussions with HBOC  and the other two companies since the
CyCare Board meeting held on March 18,  1996, and concluded with an overview  of
each  of  these  companies' respective  businesses,  products,  services, market
presence and management personnel.  Following Mr. Houtz's presentation,  Messrs.
Houtz,  Schonau and Goldstein responded to  questions from members of the CyCare
Board. Following  this  discussion, Mr.  Goldstein  and Eric  J.  Schoenberg,  a
Principal  of Broadview,  were asked to  present their analysis  of the interest
expressed by  each  of the  three  companies with  respect  to entering  into  a
strategic  business combination with  CyCare. In connection  with this analysis,
two separate  reports were  distributed for  the CyCare  Board's  consideration.
These  reports  included the  following detailed  information: (i)  a comparison
summary analysis of the three offers received to date, which analysis included a
review of the implied price of each offer  as of April 19, 1996 and, based on  a
30-day  average of  such offeror's stock  price, the percentage  of the combined
entity that would be held by current CyCare stockholders on a post-merger basis,
1996 earnings per  share and  cash flow  per share  accretion calculations,  and
earnings  per share accretion break-even prices; (ii) a review of the historical
stock performance  of each  company  since January  1, 1993;  (iii)  comparative
valuation  metrics for each of the companies; (iv) a review of various brokerage
analysts' buy/sell recommendations of  the subject companies;  (v) a summary  of
historical financial, stock ownership, and management information of the subject
companies;  (vi) pooling  analyses and pro  forma projections  for each proposed
deal structure; (vii) a review of the impact of prior acquisitions made by  each
company  on  their  respective  stock  prices;  (viii)  an  analysis  of  public
valuations and  acquisition  prices  paid  for  enterprise  healthcare  software
companies;  (ix) an  analysis of  financial statistics  of comparable enterprise
healthcare software public companies; (x) a  review of premiums paid for  public
software  companies in  transactions with total  consideration in  excess of $50
million since  January 1,  1993;  and (xi)  a  review of  enterprise  healthcare
software  transactions with consideration in excess of $10 million since January
1, 1993.  Messrs. Goldstein  and Schoenberg  reviewed in  detail each  of  these
reports  with the CyCare Board and responded to extensive questions and comments
from members  of the  CyCare  Board during  the  course of  their  presentation.
Following  these discussions, the CyCare Board concluded that it would be in the
best interests  of CyCare  to  explore further  the  possibility of  a  business
combination  with each of  these companies, and  directed management to continue
such discussions.
 
    On  April  24,  1996,  in  a  phone  conversation  with  Mr.  Goldstein,   a
representative  of Company  No. 2 reconfirmed  Company No. 2's  offer to acquire
CyCare at a value per share of CyCare Common Stock of $47.
 
    On April 25, 1996, Messrs. Houtz,  Schonau, Goldstein and Schoenberg met  in
Phoenix  with  Messrs.  Gilbertson  and Overton  to  continue  their discussions
regarding a possible business combination of  HBOC and CyCare. At this  meeting,
the discussions focused principally on the pricing of the proposed merger and on
the  organizational characteristics  of each  of the  companies. Following these
discussions, HBOC agreed to  increase its offer  from .84 to .86  of a share  of
HBOC  Common Stock for each  share of CyCare Common  Stock (an implied per share
value of CyCare Common Stock of  $49.93) and agreed conceptually to stock  price
collars on this exchange ratio.
 
    On April 30, 1996, Mr. Schonau met in Atlanta with Mr. Gilbertson to conduct
certain preliminary financial due diligence concerning HBOC.
 
                                       18
<PAGE>
    On  May 1, 1996,  Messrs. Houtz, Schonau  and Goldstein met  in Phoenix with
representatives of Company No.  1 at which meeting  Company No. 1 increased  its
offer  from an implied  value per share of  CyCare Common Stock  of $46.10 as of
April 13 to an implied  value per share of CyCare  Common Stock of $49. Also  on
this date, in response to unusual activity in CyCare Common Stock, CyCare issued
a  press  release disclosing  that  it had  been  approached by  several parties
regarding a potential acquisition.
 
    On May 2, 1996, Mr.  Gilbertson proposed that HBOC  and CyCare enter into  a
letter of intent regarding a potential merger.
 
    On  May 3, 1996, a special meeting of the CyCare Board was held at which all
of the CyCare Board members were present. At this meeting, Mr. Houtz briefed the
CyCare  Board  on   his  recent  meetings   and  telephone  conversations   with
representatives  of  HBOC, Company  No. 1  and  Company No.  2 and  responded to
questions from  CyCare Board  members during  the course  of this  presentation.
Following  this discussion, Mr. Goldstein advised the CyCare Board that CyCare's
strategy until that time had been to further explore the interest of each of the
three potential  acquirors and  that CyCare  would be  focusing on  stock  price
collars  with each of the companies. Following Mr. Goldstein's presentation, Mr.
Schoenberg then distributed  a report  for the CyCare  Board's consideration  in
connection  with the proposed business combinations. The Broadview report was an
updated version of the  information previously provided to  the Cycare Board  at
its  April 23, 1996 meeting (updated to May  1, 1996), and also included a chart
depicting the weekly trading volumes of  each of the companies since January  1,
1996.  Mr. Schoenberg reviewed the report with the CyCare Board and responded to
extensive questions and  comments from members  of the CyCare  Board during  the
course  of  his presentation.  Issues focused  on by  the CyCare  Board included
weekly trading volume as a percentage of newly-issued shares, accretion/dilution
analysis,  stock  volatility,  pooling  analysis,  potential  cost  savings  and
increased  revenue under  the various potential  transactions, prior acquisition
experience and the effect thereof on stock price.
 
    Mr. Goldstein  then  briefly summarized  the  information in  the  Broadview
report, focusing on the dilution analysis. Messrs. Goldstein and Schoenberg then
responded  to extensive questions from CyCare Board members, including questions
regarding earnings  estimates of  the various  parties, the  relative  financial
strength and risks of the parties, and the relative certainty of the transaction
closing.  In this  regard, Mr.  Goldstein advised  the CyCare  Board that HBOC's
prior acquisition experience and the accretive nature of the transaction to HBOC
made the certainty  of closure  greater with HBOC  compared with  the other  two
companies under consideration. In response to a question from a CyCare director,
Messrs.  Houtz and Goldstein extensively  discussed their respective assessments
of each of  the parties'  plans for CyCare's  business on  a post-merger  basis.
Other  issues discussed  included CyCare's current  financial position, CyCare's
new products, and  the probable  effect of  a business  combination on  CyCare's
stockholders,  employees  and customers.  The  CyCare Board  then  discussed the
relative merits of the  parties in several areas,  including the probability  of
consummation,   dilution,  stock  price  collars,  break-up  fees,  stock  price
volatility, stock price upside and the  best "fit" for CyCare. A  representative
of  CyCare's  legal counsel,  Snell  & Wilmer  L.L.P.  ("Snell &  Wilmer"), then
reviewed the directors' fiduciary duties in the context of a potential  business
combination.
 
    At  the conclusion of the  May 3, 1996 meeting,  the CyCare Board authorized
management to permit HBOC to conduct formal and detailed due diligence of CyCare
and to open  discussions with  HBOC regarding  the preparation  of a  definitive
merger   agreement.  Among  the  factors  considered  by  the  CyCare  Board  in
authorizing management to pursue a transaction with HBOC was the prospect that a
strategic business combination  with HBOC  would enable  CyCare stockholders  to
continue  as  investors in  a  combined company  that  would have  the financial
resources, diversification  and liquidity  for  sustained growth.  Further,  the
Board decided to eliminate Company No. 2 from further consideration based on the
determination that Company No. 2's stock appeared to be over-valued, the company
was  too close in size to CyCare, the belief that a combination with the company
did not present a good long-term  synergistic growth opportunity for CyCare  and
the perceived risk that such a transaction
 
                                       19
<PAGE>
might  not close.  Mr. Houtz  telephoned Mr.  McCall to  advise him  of CyCare's
willingness to conduct substantive  negotiations regarding a strategic  business
combination  of the two  companies. Mr. Houtz then  telephoned Mr. Gilbertson to
advise him  that CyCare  did not  want  to enter  into a  letter of  intent  but
preferred  to negotiate a definitive  merger agreement. Mr. Gilbertson requested
that CyCare enter  into a letter  agreement containing a  no-shop provision  and
that the parties proceed to negotiate the definitive agreement.
 
    On May 4, 1996, Messrs. Houtz, Goldstein and Gilbertson talked via telephone
to  clarify HBOC's position with respect  to CyCare's Dubuque, Iowa data center,
the proposed  stock  price  collars  and CyCare's  preference  with  respect  to
proceeding  directly to the preparation of a definitive merger agreement in lieu
of a letter of intent or no-shop agreement as proposed by HBOC.
 
    On May 5,  1996, representatives  of HBOC and  Jones, Day,  Reavis &  Pogue,
HBOC's  legal counsel, arrived in Phoenix to commence their due diligence review
of CyCare, which review continued throughout  the week. In addition, a draft  of
the  Merger Agreement was submitted by HBOC's legal counsel for consideration by
CyCare's management and financial and legal advisors. During the next two weeks,
a number of  telephone calls were  held between CyCare's  management and  HBOC's
management,  and between  their respective  financial and  legal advisors, which
focused on, among other things, the specific terms, timing and structure of  the
potential merger.
 
    Also   on  May  5,  1996,  Mr.  Houtz  received  a  telephone  call  from  a
representative of Company No. 1  increasing its offer of  May 1 from an  implied
value per share of CyCare Common Stock of $49 to $50, along with a change in the
stock price collar structure.
 
    On  May 6, 1996, a special meeting of the CyCare Board was held at which all
of the directors were present. During this meeting, the CyCare Board extensively
discussed Company No. 1's revised offer and HBOC's request that CyCare agree not
to solicit  offers from  third parties  for  a period  of time.  Following  this
discussion, the CyCare Board determined not to take any action at that time with
respect  to Company  No. 1's  offer, and  authorized the  execution of  a letter
addressed to HBOC whereby CyCare agreed not to solicit offers from third parties
for the following 20 days, which was delivered to HBOC that day.
 
    Following the resolution of significant  transaction issues and a series  of
conversations  between  Mr. Houtz  and  the CyCare  Board  members, late  in the
evening on May 9, 1996,  CyCare and HBOC entered into  a letter of intent  which
contemplated  the merger of CyCare  with HBOC. Under the  terms of the letter of
intent, the stockholders  of CyCare  would receive shares  of HBOC  based on  an
exchange  ratio of .86 of a share of  HBOC Common Stock for each share of CyCare
Common Stock  (or  an  implied  value  per  share  of  CyCare  Common  Stock  of
approximately  $49). This ratio would be subject  to adjustment in the event the
average stock price of HBOC Common Stock during a specified period of time  fell
below $53.25 per share or exceeded $62.75 per share.
 
    On May 10, 1996, CyCare and HBOC issued a joint press release announcing the
signing  of the  letter of  intent. Also  on May  10, Mr.  Goldstein met  with a
representative of Company No. 1 to inform him that the CyCare Board had  decided
to decline to pursue Company No. 1's revised offer.
 
    On May 13, 1996, a special meeting of the CyCare Board was held at which all
members were present. At this meeting, Mr. Houtz briefed the CyCare Board on the
events  of the last few  days and discussed the  positive reaction of the market
and CyCare's customers to the news that  CyCare had executed a letter of  intent
with  HBOC.  Following  this  discussion, a  representative  of  Snell  & Wilmer
reviewed in detail with the CyCare Board the material terms of the draft of  the
Merger  Agreement, distributed a report to  the CyCare Board members summarizing
the CyCare Board's fiduciary  obligations and then  responded to questions  from
various  CyCare Board members. Following this discussion, Mr. Houtz apprised the
CyCare Board that certain  issues remained unresolved  with HBOC, including  the
scope  and length of proposed  covenants not to compete  and the parties to whom
these agreements would apply.
 
                                       20
<PAGE>
    On May 14, 1996, a special meeting of the CyCare Board was held at which all
members were present. At this meeting,  Mr. Houtz advised the CyCare Board  that
he had received a letter earlier that day from a representative of Company No. 2
proposing to acquire CyCare at an implied per share value of CyCare Common Stock
of $59 (the implied value of the HBOC offer at that time was $53.96). The CyCare
Board  then  discussed  the letter  in  detail. Following  this  discussion, Mr.
Goldstein reviewed the letter from a  financial perspective, noting that he  had
spoken  with  Company  No.  2's chief  executive  officer  clarifying  the terms
proposed in the letter. He then discussed  several factors that in his view  the
CyCare  Board should consider, including the fact that Company No. 2 stockholder
approval would  be  necessary  to  consummate  the  transaction  and  that  HBOC
stockholder  approval  would not  be required.  He  also reviewed  the ownership
interest that CyCare  stockholders would  have in  the combined  entity and  the
risks  associated with consummating a transaction  with Company No. 2. Mr. Houtz
then reviewed for  the CyCare Board  what he  believed to be  the synergies  and
potential  for increased value  to CyCare's stockholders  that would result from
CyCare combining with HBOC as opposed to Company No. 2. These synergies included
the  complementary  nature  of  each  company's  respective  product  lines  and
services,  the expanded sales  force and research  and development capabilities,
and the  ability to  serve markets  not  previously served  by each  company.  A
representative  of Snell &  Wilmer then advised  the CyCare Board  members as to
their  fiduciary   obligations  in   the   context  of   reviewing   alternative
stock-for-stock  proposals. Following this discussion,  the CyCare Board further
discussed the HBOC transaction and Company No. 2's proposal, and then  concluded
that  CyCare should proceed  towards the finalization  of a definitive agreement
with HBOC and  directed Mr. Goldstein  to contact HBOC  to attempt to  negotiate
more  favorable stock  price collars. The  CyCare Board also  requested that Mr.
Goldstein contact a representative of Company No. 2 to inquire whether its offer
included a stock price collar and to  verify that a vote of the stockholders  of
Company No. 2 would be required.
 
    On  May 15,  1996, a representative  of Company No.  2 sent a  letter to the
CyCare Board by telecopy clarifying its previous offer, noting that the proposed
exchange ratio would  be subject  to adjustment if  the average  stock price  of
Company No. 2 during a specified period fell to a level resulting in a value per
share of CyCare Common Stock below $56 per share or rose to a level resulting in
a value per share of CyCare Common Stock above $65.
 
    On May 18, 1996, a special meeting of the CyCare Board was held at which all
members  were present. Mr. Houtz began this meeting by advising the CyCare Board
that earlier in the day CyCare's  management and legal advisors had finalized  a
proposed  definitive  merger  agreement with  HBOC.  Mr. Goldstein  then  made a
presentation with respect to  the fairness, from a  financial point of view,  of
the  consideration to be received by the CyCare stockholders in the transaction,
and stated that Broadview would be  delivering a written opinion to that  effect
following the conclusion of this meeting. Mr. Schoenberg then reviewed in detail
the  fairness opinion, a  draft of which  had been provided  to the CyCare Board
several days earlier,  and responded  to questions  from members  of the  CyCare
Board. Mr. Schoenberg reviewed various matters relating to the fairness opinion,
specifically  valuation considerations,  explanations of  valuation methodology,
and valuation  analysis. Mr.  Schoenberg  then discussed  at length  the  recent
adjustment in the HBOC stock price collars. Mr. Houtz then reviewed the terms of
the  May 15, 1996 letter from Company No. 2. A discussion among the CyCare Board
members then ensued regarding these matters.
 
    Following this discussion, Mr. Goldstein  reviewed in detail the history  of
Company  No. 2's interest in CyCare and noted that Company No. 2's May 15 letter
had prompted CyCare to seek an adjustment  in the HBOC stock price collars.  Mr.
Goldstein  then proceeded to analyze,  from Broadview's perspective, Company No.
2's two letters of May 14 and 15, 1996 as compared to the HBOC offer. The issues
that were addressed included (i) the  potential adverse impact of a  combination
with  Company No. 2 on  CyCare's installed base and  employees; (ii) Company No.
2's initial  refusal  to  increase  the consideration  in  its  original  merger
proposal  ($47 per  share) and Company  No. 2's  statement at that  time that it
believed its initial  proposal was on  the high side;  (iii) the necessity  that
Company  No. 2  obtain stockholder approval  for the  proposed combination; (iv)
CyCare's greater
 
                                       21
<PAGE>
impact on the stock price of the combined company if CyCare merged with  Company
No.  2 rather than HBOC; (v) Company  No. 2's relative inexperience (compared to
HBOC) in  consummating  significant acquisitions  and  its apparent  lack  of  a
financial  advisor in formulating its proposals to CyCare; and (vi) the advanced
state of the proposed HBOC transaction.
 
    Following Mr. Goldstein's presentation, a  representative of Snell &  Wilmer
reviewed  with the CyCare Board members  their fiduciary obligations and advised
the CyCare  Board regarding  the factors  that it  was entitled  to consider  in
reviewing  these alternative  stock-for-stock proposals. He  then summarized the
salient terms of the Merger Agreement, noting particularly (i) that the exchange
ratio was subject  to adjustment if  the average  stock price of  HBOC during  a
specified  period fell below $52.25 per share  or rose above $65.00 per share (a
change from  the  collars agreed  to  in the  letter  of intent)  and  (ii)  the
circumstances  under which CyCare would be obligated to pay a termination fee to
HBOC. It was also noted that most of the CyCare options would be assumed by HBOC
in the Merger. Mr. Houtz then reviewed  with the CyCare Board the synergisms  he
believed would result from a merger with HBOC, which included the fact that both
companies  had  client-server  technologies and  graphical  user  interface UNIX
systems, they served  complementary market  segments and  the combination  would
provide   for  enhanced   solutions  for  the   evolving  integrated  healthcare
information technology marketplace.
 
    After further deliberation, the CyCare Board unanimously approved the Merger
and the Merger Agreement with HBOC, authorized management to execute the  Merger
Agreement,  and recommended its adoption by  the holders of CyCare Common Stock.
Subsequent to  this meeting,  each  company executed  and delivered  the  Merger
Agreement  on Saturday, May 18, 1996. The  execution of the Merger Agreement was
announced on May 20, 1996 by issuance of a press release.
 
REASONS OF CYCARE FOR ENGAGING IN THE MERGER; RECOMENDATION OF THE CYCARE BOARD
 
    The CyCare Board has unanimously  approved the proposed Merger and  believes
the  Merger is in the best interests of CyCare and its stockholders. In reaching
their decision, the directors considered, with the assistance of management  and
its legal and financial advisors, the following factors:
 
        (i)  The Merger provides CyCare stockholders with HBOC Common Stock in a
    tax-free exchange at a substantial premium over the historical market prices
    for their shares of CyCare Common  Stock. In addition, the Merger  Agreement
    provides  for adjustment of the Exchange  Ratio based on fluctuations in the
    price of HBOC Common Stock,  which offers CyCare stockholders protection  by
    increasing  the Exchange Ratio if the price of HBOC Common Stock falls below
    $52.25 per share.
 
        (ii) The Merger  offers CyCare  stockholders an  opportunity to  acquire
    shares  in a significantly larger company and the opportunity to participate
    in the long-term growth and appreciation of CyCare's business through  their
    ownership interest in HBOC.
 
       (iii)  The strategic  fit between CyCare  and HBOC  and the complementary
    nature of their  respective businesses,  particularly in light  of the  fact
    that   HBOC's  products  serve  the   hospital  segment  of  the  healthcare
    information systems  industry  and  CyCare's products  serve  the  physician
    practice segment of such industry.
 
   
       (iv) Anticipated operating synergies and cost savings, including possible
    synergies  and cost savings  with respect to (a)  the consolidation of sales
    offices, corporate, administrative and  support functions, (b) the  addition
    of  sales  forces  and research  and  development capabilities  and  (c) the
    elimination of public reporting obligations of CyCare. The CyCare Board  did
    not  consider any  quantified amount  of such  cost savings  in reaching its
    decision to engage in the Merger.
    
 
        (v) The opinion of Broadview that,  as of May 17, 1996, the  transaction
    is fair, from a financial point of view, to the CyCare stockholders. See "--
    Opinion of Financial Advisor to CyCare."
 
                                       22
<PAGE>
       (vi)  The CyCare  Board considered the  financial and other  terms of the
    Merger, including that  the Merger will  not be subject  to the approval  by
    HBOC  stockholders,  and, while  the Merger  Agreement contains  a "no-shop"
    clause and a termination fee  provision (see "-- Terms  of the Merger --  No
    Solicitation  --  Termination"),  the  Merger  Agreement  permits  CyCare to
    provide information to or enter into discussions or negotiations with  other
    persons  if  the  CyCare Board  determines  that  it is  appropriate  in the
    exercise of the directors' fiduciary duties.
 
       (vii) Information with respect to the financial condition and business of
    HBOC, including, among other things, HBOC's recent and historical stock  and
    earnings  performance, and the demonstrated  ability of HBOC to successfully
    implement its growth strategy.
 
    In the course of its deliberations, the CyCare Board reviewed the  following
additional  factors relevant to  the Merger: (i) the  capital structure of HBOC;
(ii) the financial  presentation analysis  of Broadview  prepared in  connection
with  its fairness opinion; (iii) reports  from management and legal advisors on
specific terms of the Merger  Agreement; (iv) the public information  concerning
the  financial performance, condition, business operations and prospects of each
of CyCare and HBOC presented at the April 23, 1996 CyCare Board meeting; and (v)
the proposed terms, timing and structure of the Merger.
 
    The CyCare Board also considered the following potentially negative  factors
in  its deliberations concerning  the Merger: (i)  the possibility of management
disruption associated with the Merger and the risk that, despite the efforts  of
the  combined company,  key management  personnel of  CyCare might  not continue
their employment with the combined company; (ii) the possibility that certain of
the  operating  economies  of  scale  such  as  the  elimination  of   redundant
administrative  costs sought to be achieved as  a result of the Merger might not
be obtained;  (iii)  the possibility  of  CyCare's failure  to  be  successfully
integrated  into HBOC; and (iv) the downward adjustment to the Exchange Ratio if
the average price of the HBOC Common Stock exceeds $65.00 per share for  certain
periods  prior to completion  of the Merger,  thus capping the  value holders of
CyCare Common Stock would receive upon consummation of the Merger.
 
   
    The foregoing discussion of information and factors considered by the CyCare
Board is not intended to be exhaustive  but is intended to include the  material
factors  considered.  In view  of the  wide variety  of factors  considered, the
CyCare directors  did  not  find it  practical  to,  and did  not,  quantify  or
otherwise  assign  relative  weight  to  the  specific  factors  considered  and
individual directors may have given differing weights to different factors.  The
CyCare Board did not, however, materially rely upon the financial projections of
CyCare prepared by CyCare management in evaluating and/or approving the Merger.
    
 
    After taking into consideration all of the factors set forth above, together
with  an  analysis  of the  presentations  of management,  Broadview,  and legal
counsel, the CyCare Board  unanimously approved the  Merger and determined  that
the  Merger is fair to and in the  best interests of CyCare and its stockholders
and that CyCare should  proceed with the Merger  at this time. Accordingly,  the
CyCare Board unanimously recommends that CyCare's stockholders vote FOR approval
of the Merger Agreement.
 
OPINION OF FINANCIAL ADVISOR OF CYCARE
 
    CyCare  engaged Broadview to act as its financial advisor and requested that
Broadview render an opinion  regarding the fairness, from  a financial point  of
view,  to CyCare's stockholders, of the consideration to be received by CyCare's
stockholders in the Merger. At the meeting of the CyCare Board on Saturday,  May
18, 1996, Broadview rendered its written opinion (the "Broadview Opinion") that,
as  of  May  17,  1996,  based  upon and  subject  to  the  various  factors and
assumptions set forth in the Broadview Opinion, the consideration to be received
by CyCare's stockholders in the Merger was fair, from a financial point of view,
to the  CyCare stockholders.  The amount  of such  consideration was  determined
pursuant   to  negotiations  between  CyCare  and   HBOC  and  not  pursuant  to
recommendations of Broadview.
 
                                       23
<PAGE>
   
    The text  of  the Broadview  Opinion,  which sets  forth  assumptions  made,
matters  considered, and limitations on the review undertaken, was substantially
similar to their opinion dated the date of this Proxy Statement/Prospectus which
is  attached  as   Appendix  B  to   this  Proxy  Statement/Prospectus.   CyCare
stockholders are urged to read the opinion set forth as Appendix B carefully and
in  its entirety in their evaluation of  the Merger. Such opinion addresses only
the fairness of the Exchange Ratio from  a financial point of view and does  not
constitute  a  recommendation  to  any  stockholder of  CyCare  as  to  how such
stockholder should vote at the Meeting.  Broadview has advised the CyCare  Board
expressly  in the  Broadview Opinion  that Broadview  does not  believe that any
person (including a stockholder of CyCare)  other than the CyCare Board has  the
legal  right to rely  upon its opinion  to support any  claims against Broadview
arising under applicable state law and  that, should any such claims be  brought
against  Broadview  by any  such  person, this  assertion  will be  raised  as a
defense. In the absence of  applicable state-law authority, the availability  of
such  a  defense  would  be  resolved  by  a  court  of  competent jurisdiction.
Resolution of the question of the availability of such a defense, however,  will
have  no effect  on the  rights and responsibilities  of the  CyCare Board under
applicable state law. Nor would the availability of such a state-law defense  to
Broadview have any effect on the rights and responsibilities of either Broadview
or  the CyCare Board  under the federal securities  laws. In addition, Broadview
will receive a  fee from  CyCare contingent  upon successful  conclusion of  the
Merger.   The  summary  of  the  Broadview  Opinion  set  forth  in  this  Proxy
Statement/Prospectus is qualified in its entirety by reference to the full  text
of such opinion.
    
 
    In  rendering its opinion, Broadview, among  other actions: (i) reviewed the
terms of the Agreement  of Merger in the  form of the draft  dated May 16,  1996
(the  "Agreement"),  which  draft  contained no  material  differences  from the
definitive Merger Agreement;  (ii) reviewed the  financial statements of  CyCare
for  its fiscal years ended December 31, 1993, 1994, and 1995 audited by Ernst &
Young LLP and the unaudited financial statements of CyCare for the three  months
ended  March 31, 1996 included within CyCare's Form 10-Q Report for such period;
(iii) reviewed  internal  historical  financial and  operating  data  concerning
CyCare  prepared and provided  to Broadview by  CyCare management; (iv) reviewed
financial projections for CyCare  prepared and provided  to Broadview by  CyCare
management;  (v) participated  in discussions with  CyCare management concerning
the operations,  business  strategy,  financial performance  and  prospects  for
CyCare;  (vi)  discussed  with  CyCare  management  its  view  of  the strategic
rationale for the Merger; (vii) reviewed the reported closing prices and trading
activity for  CyCare stock;  (viii) compared  certain aspects  of the  financial
performance  of CyCare  with public  companies deemed  comparable; (ix) analyzed
available information, both  public and  private, concerning  other mergers  and
acquisitions  Broadview believed  to be  comparable in whole  or in  part to the
Merger; (x) reviewed HBOC's  annual report and Form  10-K Report for the  fiscal
years ended December 31, 1993, 1994, and 1995 and Form 10-Q Report for the three
month  period ended March 31, 1996,  including the financial statements included
therein; (xi) participated  in discussions with  HBOC management concerning  the
operations,  business strategy,  financial performance  and prospects  for HBOC;
(xii) discussed with HBOC management its view of the strategic rationale for the
Merger; (xiii) reviewed  the reported  closing prices and  trading activity  for
HBOC  stock;  (xiv)  considered  the  total  number  of  shares  of  HBOC  stock
outstanding, the average weekly  trading volume of HBOC  stock, and the  maximum
time  period  for  CyCare  stockholders  to  liquidate  their  HBOC  stock given
Commission regulations;  (xv) reviewed  recent equity  analyst reports  covering
HBOC;  (xvi)  analyzed  the  anticipated  effect of  the  Merger  on  the future
financial  performance  of  the  consolidated  entity;  (xvii)  participated  in
negotiations  and discussions related to the Merger among CyCare, HBOC and their
financial and legal  advisors; and  (xviii) conducted  other financial  studies,
analyses  and investigations as deemed appropriate for purposes of the Broadview
Opinion.
 
   
    In rendering the  Broadview Opinion, Broadview  relied, without  independent
verification,  on the accuracy  and completeness of all  the financial and other
information that was  publicly available  or furnished  by CyCare  or HBOC.  All
analyses relying on future projections of CyCare utilized forecasts developed by
CyCare's  management,  which  Broadview  assumed  were  reasonably  prepared and
reflected  the  best  available  estimates  and  good  faith  judgments  of  the
management  of CyCare as to the future  performance of CyCare. Broadview did not
materially rely upon the financial projections of
    
 
                                       24
<PAGE>
   
CyCare in evaluating the  Merger or rendering  the Broadview Opinion.  Broadview
did  not make or obtain an independent appraisal or valuation of any of CyCare's
or HBOC's  assets.  With  regard  to any  analyses  relating  to  valuations  of
comparable public companies, the share prices used were for the close of trading
on  May 17, 1996, the last full trading  day before the CyCare Board met to give
final consideration to the proposed Merger.
    
 
    The following is a summary explanation of the various sources of information
and valuation methodologies employed by Broadview in conjunction with  rendering
the Broadview Opinion regarding the proposed Merger.
 
    PUBLIC  COMPANY COMPARABLES  ANALYSIS.   Total Market Capitalization/Revenue
("TMC/R") and Price/Earnings ("P/E") multiples indicate the value public markets
place on companies in a particular market segment. Although there are a  limited
number  of public company "pure plays" in  the markets in which CyCare competes,
several companies are comparable to CyCare based on revenue size range, products
offered, business  model, management  structure and  market position.  Broadview
reviewed ten public company comparables from a financial point of view including
each  company's: Last Twelve Month (LTM)  Revenue; LTM Pretax Income; LTM Pretax
Margin; LTM  Primary  Earnings  Per  Share ("EPS");  LTM  P/E  ratio;  Projected
Calendar  1996 EPS; Price/Projected  1996 Calendar EPS  ratio ("Projected P/E");
Projected 5-year EPS Growth  Rate; Growth Adjusted  Projected P/E ratio;  Equity
Market   Capitalization;  Total   Market  Capitalization   (i.e.  equity  market
capitalization adjusted for net  debt) and TMC/R  ratio. In alphabetical  order,
the  public company comparables were: Amisys  Managed Care Systems, Inc., Cerner
Corp., Citation  Computer Systems,  Inc., Enterprise  Systems, Inc.,  HBOC,  IDX
Systems, Inc., Medic Computer Systems, Inc., Medicus Systems Corp., Phamis, Inc.
and Shared Medical Systems Corp. These comparables have a LTM P/E ratio range of
22.6  to 171.4 with a median of 49.1;  Projected P/E ratio range of 26.6 to 73.5
with a median of 47.3; Growth Adjusted Projected P/E ratio range of 20.2 to 60.7
with a median of 47.0; and TMC/R ratio range of 1.0 to 9.1 with a median of 4.1.
 
    The TMC/R valuation analysis places a  per share value of $53.20 on  CyCare.
The LTM P/E valuation analysis places a per share value of $42.21 on CyCare. The
Projected  P/E  analysis places  a  per share  value  of $50.62  on  CyCare. The
Growth-Adjusted Projected P/E  analysis places a  per share value  of $50.25  on
CyCare.
 
    TRANSACTION  PREMIUMS  PAID ANALYSIS.   Premiums  paid in  comparable public
seller transactions indicate the amount  of consideration acquirors are  willing
to  pay above the  seller's equity market capitalization.  In this analysis, the
value of consideration paid  in transactions involving  stock is computed  using
the  buyer's stock price  immediately prior to  announcement, while the seller's
equity market  capitalization is  measured thirty  days prior  to  announcement.
Broadview  reviewed 29 transactions involving public software sellers with total
consideration greater than $50 million from  January 1, 1993 to the present.  In
order  of descending premium  paid, the transactions  used were the acquisitions
of: (i) Sierra On-Line,  Inc. by CUC International,  Inc. (pending); (ii)  Lotus
Development   Corp.  by  IBM  Corp.;  (iii)  Intuit,  Inc.  by  Microsoft  Corp.
(uncompleted  transaction);   (iv)   Legent   Corp.   by   Computer   Associates
International;  (v) Advance  Ross Corp. by  CUC International,  Inc.; (vi) Aldus
Corp. by Adobe Systems,  Inc.; (vii) Knowledgeware,  Inc. by Sterling  Software,
Inc.; (viii) TGV Software, Inc. by Cisco Systems, Inc.; (ix) Systems Center Inc.
by   Sterling  Software,   Inc.;  (x)  Davidson   &  Associates,   Inc.  by  CUC
International, Inc. (pending);  (xi) Software  Toolworks, Inc.  by Pearson  Plc;
(xii)  Alias Research, Inc. by Silicon Graphics, Inc.; (xiii) ASK Group, Inc. by
Computer Associates International; (xiv)  PDA Engineering by  Macneal-Schwendler
Corp.;  (xv) Integrated  Silicon Systems, Inc.  by Arcsys,  Inc.; (xvi) Cybertek
Corp. by  Policy Management  Systems  Corp.; (xvii)  Trinzic Corp.  by  Platinum
Technology,  Inc.; (xviii) Delrina Corp. by Symantec Corp.; (xix) Chipsoft, Inc.
by Intuit,  Inc.; (xx)  CliniCom Incorporated  by HBOC;  (xxi) Comdata  Holdings
Corp.  by Ceridian Corp.;  (xxii) Hogan Systems by  Continuum Co., Inc.; (xxiii)
C.I.S. Technologies, Inc.
by National Data Corp. (pending); (xxiv) Frame Technology Corp. by Adobe Systems
Inc.;
 
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<PAGE>
(xxv) Wavefront Technologies,  Inc. by Silicon  Graphics, Inc.; (xxvi)  Microtec
Research,  Inc. by  Menter Graphics  Corp.; (xxvii)  Powersoft Corp.  by Sybase,
Inc.; (xxviii) First Financial Management Corp. by First Data Corp.; and  (xxix)
Softimage, Inc. by Microsoft Corp.
 
    Based upon Broadview's analysis of premiums paid in comparable transactions,
Broadview  found that  premiums paid  to sellers'  equity market capitalizations
(using the buyer's share  price on the announcement  date of the transaction  to
calculate  consideration in stock transactions) ranged from 21.0% to 137.1%. The
median was 50.0%, and the  mean was 55.3%. Based upon  the median, the price  of
HBOC Common Stock on May 17, 1996 and the price per share of CyCare Common Stock
30 days preceeding May 17, 1996, the analysis places a per share value on CyCare
Common Stock of $41.63.
 
    TRANSACTION  COMPARABLES  ANALYSIS.   Valuation statistics  from transaction
comparables indicate  the Price/Revenue  ("P/R") and  Price/Pretax  ("P/Pretax")
multiples  acquirors have paid  for comparable companies  in a particular market
segment. Broadview reviewed  ten M&A transaction  comparables from 1993  through
the  present  which involve  sellers sharing  many characteristics  with CyCare,
including revenue size range, products  offered, business model, and  management
structure.  These transactions represent three  public sellers and seven private
sellers or divestitures  in the  enterprise healthcare software  segment of  the
information  technology market. In order of descending P/R multiples, the public
seller transactions used are the  acquisitions of: (i) CliniCom Incorporated  by
HBOC;  (ii) Serving Software, Inc. by  HBOC; and (iii) C.I.S. Technologies, Inc.
by National Data Corp.
 
    In order  of descending  P/R multiples,  the private  seller or  divestiture
transactions  used are the  acquisition of: (i) TDS  Healthcare Systems Corp. by
Alltel Corp.'s Systematics  Information Services; (ii)  Elcomp Systems, Inc.  by
Medic  Computer Systems, Inc.;  (iii) IBAX Healthcare Systems  by HBOC; and (iv)
Versyss, Inc.  by  Physicians  Computer Network,  Inc.  Additionally,  Broadview
considered  three transactions with  respect to which  Broadview has information
that is not publicly available.
 
    The P/R multiples of the three  public seller transactions ranged from  2.59
to  4.69, with  a median  of 2.79.  The P/Pretax  multiples of  the three public
seller transactions ranged from  30.3 to 41.6,  with a median  of 31.8. The  P/R
multiples  of the  seven private seller  transactions ranged from  0.60 to 5.93,
with a  median of  0.78. The  P/Pretax  multiples of  the seven  private  seller
transactions  ranged from 5.9 to 22.3 with a median of 6.5. The median P/R ratio
for all ten transactions was 2.07, and the median P/Pretax multiple for all  ten
transactions was 18.1.
 
    The  per  share valuation  implied  by the  median  P/R multiple  (using all
comparables) is $25.77. The per share  valuation implied by the median  P/Pretax
multiple is $23.99.
 
    PRO  FORMA POOLING MODEL  ANALYSIS.  A pro  forma merger analysis calculates
the EPS  accretion/  dilution of  the  pro  forma combined  entity  taking  into
consideration various financial effects which will result from a consummation of
the   merger.  This  analysis  relies   upon  certain  financial  and  operating
assumptions provided by CyCare management  and on publicly available data  about
HBOC.  It also includes cost savings assumptions developed jointly by CyCare and
HBOC management. Based on  CyCare management's forecast,  the pro forma  pooling
analysis  indicates EPS accretion for the fiscal years ending December 31, 1996,
1997, and 1998 of 1.8%, 1.5%, and 0.5%, respectively.
 
    STOCK PERFORMANCE ANALYSIS.   For comparative  purposes, Broadview  examined
the  historical volume and trading prices for both CyCare and HBOC Common Stock.
Broadview examined  the  relative relationships  between:  (i) HBOC  and  CyCare
actual  stock prices and trading  volumes from January 1,  1995 to May 17, 1996;
(ii) HBOC and CyCare  stock price performance  from January 1,  1993 to May  17,
1996;  (iii) HBOC  and CyCare relative  stock price performance  from January 1,
1995 to May 17, 1996; and (iv) the ratio of CyCare's stock price to HBOC's stock
price from January 1, 1993 to May 17, 1996.
 
    The CyCare Board selected Broadview as its financial advisor on the basis of
Broadview's reputation and experience in  the information technology sector  and
the  computer software industry in particular, as well as Broadview's historical
relationship with CyCare. Pursuant to the terms of an engagement letter  between
CyCare   and  Broadview,   the  fees  payable   by  CyCare   to  Broadview  upon
 
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<PAGE>
completion of  the Merger  are  not to  exceed 1%  of  the consideration  to  be
received  by  CyCare stockholders  and option  holders  pursuant to  the Merger.
Broadview will be reimbursed by CyCare  for certain of its expenses incurred  in
connection with its engagement. The terms of the fee arrangement with Broadview,
which CyCare and Broadview believe are customary in transactions of this nature,
were  negotiated at  arms' length between  CyCare and Broadview,  and the CyCare
Board was aware of the nature of the fee arrangement, including the fact that  a
significant  portion  of  the  fees  payable  to  Broadview  is  contingent upon
completion of the Merger.
 
    The above summary of the presentations by Broadview to the CyCare Board does
not purport to be  a complete description  of such presentations  or of all  the
advice  rendered  by Broadview.  Broadview believes  that  its analyses  and the
summary set  forth  above must  be  considered as  a  whole and  that  selecting
portions  of its  analyses, without  considering all  analyses, could  create an
incomplete view of the process underlying the analyses set forth in  Broadview's
presentations  to the CyCare  Board and in the  Broadview Opinion. In performing
its analyses,  Broadview  made numerous  assumptions  with respect  to  software
industry  performance and general economic conditions,  many of which are beyond
the control  of HBOC  or CyCare.  The analyses  performed by  Broadview are  not
necessarily  indicative of actual values or  actual future results, which may be
significantly more or less favorable than suggested by such analyses.
 
REASONS FOR HBOC FOR ENGAGING IN THE MERGER
 
    The HBOC Board  believes that  the addition  of EDI  services for  physician
practices  and physician  practice management systems  to its  product line will
further its business objective of  providing healthcare information systems  and
technology  to meet virtually every need of healthcare enterprises. In addition,
the  HBOC  Board  believes  CyCare's  presence  in  the  physician  market  will
complement its presence in the hospital market.
 
TERMS OF THE MERGER
 
    The following summary of the terms and conditions of the Merger Agreement is
qualified  in  its  entirety  by  reference to  the  full  terms  of  the Merger
Agreement, which is attached hereto as Appendix A and is hereby incorporated  by
reference herein.
 
    EFFECTIVE  TIME.  The Merger shall become effective when both (i) the Merger
Agreement is adopted and  approved by the stockholders  of CyCare in  accordance
with the applicable provisions of the DGCL and (ii) a certificate of merger (the
"Certificate  of Merger") is filed with the  Secretary of State of Delaware (the
time the Merger becomes effective being referred to as the "Effective Time").
 
    GENERAL EFFECTS OF THE MERGER.  At the Effective Time, CyCare will be merged
with and into  HBOC-GA, which  will be the  surviving corporation  and a  wholly
owned subsidiary of HBOC.
 
    CONVERSION  OF SHARES.  Each outstanding share of CyCare Common Stock issued
and outstanding immediately prior to the Effective Time, shall, at the Effective
Time, be converted  into the  right to  receive .86 of  a share  of HBOC  Common
Stock, provided, however, that:
 
        (1)  if the average  closing market price  per share (or  if there is no
    sale on any  such day,  then the  average between  the closing  bid and  ask
    prices  on any such day)  for shares of HBOC  Common Stock during the twenty
    (20) consecutive trading days ending on  the third trading day prior to  the
    date  of the Meeting  as reported by  the Nasdaq NM  (the "Market Value") is
    less than $52.25 per share, then the  number of shares of HBOC Common  Stock
    to  be received by the stockholders of CyCare shall be increased so that the
    stockholders of CyCare will receive for each share of CyCare Common Stock  a
    fractional  share of HBOC Common Stock determined by dividing $44.935 by the
    Market Value; and
 
        (2) if the Market Value is more  than $65.00 per share, then the  number
    of  shares of HBOC Common Stock to be received by the stockholders of CyCare
    shall be decreased so that the stockholders of CyCare will receive for  each
    share  of  CyCare  Common Stock  a  fractional  share of  HBOC  Common Stock
    determined by dividing $55.90 by the Market Value.
 
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<PAGE>
    FRACTIONAL SHARES.  No certificates or scrip representing fractional  shares
of  HBOC  Common Stock  shall  be issued  pursuant to  the  Merger, but  in lieu
thereof, any holder of CyCare Common Stock  shall be entitled to receive a  cash
payment  therefor, without interest,  at a pro  rata amount based  on the Market
Value.
 
    STOCK OPTION  AND RESTRICTED  STOCK PLANS.   All  options issued  under  the
Long-Term  Incentive  Plan  will  become immediately  and  fully  exercisable in
accordance with their terms upon a change in control, as defined therein,  which
will  have resulted  on or  prior to the  Effective Time  of the  Merger. At the
Effective Time, HBOC shall assume CyCare's rights and obligations under each  of
the  outstanding options previously  granted under the  Long-Term Incentive Plan
and the  Director  Stock Plan  (to  the extent  such  options shall  have  fully
vested),  by which assumption the optionee shall  have the right to purchase the
number of shares of HBOC Common Stock (rounded down to the nearest whole  share)
into  which the shares of CyCare Common  Stock subject to the options would have
been converted in the Merger pursuant to the Exchange Ratio. The aggregate price
for the total number of shares of HBOC  Common Stock at which the option may  be
exercised  shall be the aggregate price at  which the option was exercisable for
the total number  of shares of  CyCare Common Stock,  reduced (as necessary  for
purposes of rounding down) to the price that will buy the number of whole shares
for  which the option  will be exercisable  and the purchase  price per share of
HBOC Common Stock thereunder shall be such aggregate price divided by the  total
number of shares of HBOC Common Stock covered thereby.
 
    Additionally, at the Effective Time, all shares of Restricted Stock (as that
term  is  defined  in  the  Director  Stock Plan)  as  to  which  the  period of
restriction  under  such  Director  Stock  Plan  and  related  restricted  stock
agreement shall have previously expired shall be exchanged for HBOC Common Stock
pursuant  to the Exchange Ratio. All shares of Restricted Stock as to which such
period of  restriction shall  not, as  of the  Closing, have  expired, shall  be
forfeited on the Closing Date.
 
   
    EMPLOYEE  STOCK  PURCHASE PLAN.    At the  written  election of  an employee
participating in the  Employee Stock Purchase  Plan (if received  by CyCare  and
forwarded  to HBOC prior to the close of business on August 19, 1996), each such
employee's stock purchase  right outstanding as  of the Closing  Date under  the
Employee  Stock Purchase  Plan shall be  cancelled and the  holder thereof shall
receive the number of whole shares of HBOC Common Stock into which the shares of
CyCare Common Stock issuable to  such holder as of  the Closing Date would  have
been  converted,  together with  cash in  lieu  of any  fractional share.  If an
employee makes such  an election, the  number of shares  of CyCare Common  Stock
issuable to a participant as of the Closing Date shall be determined by dividing
the participant's payroll withholdings under the Employee Stock Purchase Plan as
of  the Closing Date by the per share  exercise price of the CyCare Common Stock
under the Employee  Stock Purchase  Plan as  of the  first day  of the  offering
period in progress on such date.
    
 
    Absent  such election received on a timely basis for any such employee, HBOC
shall assume CyCare's  rights and  obligations under each  stock purchase  right
outstanding  as of the Closing Date under  the Employee Stock Purchase Plan, and
each such stock purchase right shall be  adjusted in the same manner as  options
granted  under the Long-Term Incentive Plan,  described above. See "Risk Factors
- -- Election Concerning Employee Stock Plan."
 
    EXCHANGE OF CERTIFICATES.   HBOC  has designated SunTrust  Bank, Atlanta  as
Exchange  Agent in connection with the Merger. At the Effective Time, HBOC shall
provide the Exchange  Agent with a  sufficient number of  shares of HBOC  Common
Stock  and cash to make  payment for shares of  CyCare Common Stock converted by
reason of the Merger. Promptly after the Effective Time, the Exchange Agent will
mail to  each  record  holder (as  of  the  Effective Time)  of  an  outstanding
certificate  or  certificates  that  immediately  prior  to  the  Effective Time
represented outstanding shares  of CyCare Common  Stock (the "Certificates"),  a
letter of transmittal and instructions for use in effecting the surrender of the
Certificates for exchange and/or payment therefor.
 
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<PAGE>
    Upon  surrender to the  Exchange Agent of a  Certificate, together with such
letter of  transmittal  properly completed  and  duly executed,  and  any  other
required  documents, the holder of such Certificate shall be entitled to receive
in exchange therefor  a certificate representing  the number of  shares of  HBOC
Common Stock equal to the product of the number of shares of CyCare Common Stock
represented by the Certificate multiplied by the Exchange Ratio and cash in lieu
of  any  fractional  share  interest  (the  "Merger  Consideration"),  and  such
Certificate shall forthwith be cancelled. If payment  is to be made to a  person
other  than the person in whose  name the Certificate surrendered is registered,
it shall be a condition of payment that the Certificate so surrendered shall  be
properly  endorsed or otherwise in proper form  for transfer and that the person
requesting such payment shall pay any transfer or other taxes required by reason
of the payment to a person other  than the registered holder of the  Certificate
surrendered  or establish to the  satisfaction of HBOC or  HBOC-GA that such tax
has been paid or  is not applicable. Until  surrendered, each Certificate  shall
represent  for all purposes only the  right to receive the Merger Consideration,
without any interest on the value thereof.
 
    Notwithstanding the foregoing, neither HBOC  nor HBOC-GA shall be liable  to
any  holder of Certificates formerly representing  shares of CyCare Common Stock
for any property properly delivered or amount paid to a public official pursuant
to any applicable abandoned property, escheat or similar law.
 
    PAYMENT OF DIVIDENDS.   No cash  or stock dividend  payable, no  certificate
representing  split  shares deliverable,  and no  other distribution  payable or
deliverable to holders of record of HBOC Common Stock at any time subsequent  to
the  Effective Time shall be paid or  delivered to the holder of any Certificate
unless and until such Certificate is surrendered to the Exchange Agent. However,
subject to any applicable escheat laws, upon such surrender, there shall be paid
or delivered to the holder of record of the certificate or certificates for HBOC
Common Stock issued and exchanged  therefor, the certificates for shares  and/or
other   property   resulting  from   any  such   dividends,  splits,   or  other
distributions, as the case may be, that shall have theretofore become payable or
deliverable with respect to HBOC Common Stock subsequent to the Effective  Time,
without interest thereon.
 
    LIMITATIONS  ON TRANSFERABILITY OF HBOC COMMON STOCK.  Shares of HBOC Common
Stock received  by certain  persons  deemed to  be  "affiliates" of  CyCare  for
purposes  of  Rule  145  under  the  Securities  Act  will  be  subject  to  the
restrictions imposed by such rule. In accordance with Rule 145, an affiliate  of
CyCare receiving HBOC Common Stock issued in the Merger may not sell such shares
except  pursuant  to  the  volume  and  manner  of  sale  limitations  and other
requirements  specified  therein  or  pursuant  to  an  effective   registration
statement  under the Securities Act. It is a condition to the obligation of HBOC
to consummate the Merger  that HBOC shall have  received from each affiliate  of
CyCare a letter agreement confirming that such person will not sell or otherwise
dispose  of the shares of HBOC Common Stock  received by such person as a result
of the Merger other than in compliance with Rule 145 or pursuant to an effective
registration statement or pursuant  to any other  available exemptions from  the
registration requirements of the Securities Act. In general, directors, officers
and substantial beneficial owners of a corporation's securities may be deemed to
be  "affiliates" of  a corporation. In  addition, certain  CyCare affiliates are
subject to certain restrictions on transfer of both CyCare Common Stock and HBOC
Common Stock prior to and following, the Effective Time of the Merger to support
pooling of interests accounting treatment of the transaction.
 
    CONDITIONS, WAIVER.  The  obligations of HBOC and  HBOC-GA on the one  hand,
and  of CyCare on the  other hand, to consummate  the Merger are contingent upon
and subject to the satisfaction or  waiver of the following conditions: (i)  the
absence  of certain legal or regulatory  proceedings with respect to the Merger;
(ii) the expiration  or termination  of the waiting  period under  the HSR  Act;
(iii)  the approval  of the Merger  and the  Merger Agreement by  holders of the
requisite number  of  shares  of  CyCare Common  Stock;  (iv)  the  Registration
Statement  shall have been declared effective and  no stop order shall have been
issued with respect hereto and shares of  HBOC Common Stock being issued in  the
Merger shall have been registered or shall be exempt from registration under all
 
                                       29
<PAGE>
applicable blue sky laws; (v) the HBOC Common Stock issuable in the Merger shall
have  been listed or approved for listing  upon notice of issuance by the Nasdaq
NM; and (vi) receipt of a fairness opinion of Broadview.
 
    The obligations of HBOC and HBOC-GA to consummate the Merger are  contingent
upon  and  subject to  the satisfaction  or waiver  of the  following additional
conditions: (i) the representations and  warranties of CyCare shall remain  true
and  correct  at  and  as  of  the Closing  Date  other  than  breaches  of such
representations which cumulatively do not or could not reasonably be expected to
constitute a  material adverse  effect on  the business,  properties, rights  or
operations  of the corporation in question and its subsidiaries taken as a whole
(a "Material Adverse Effect"); (ii) the performance of all covenants, agreements
and conditions by CyCare as provided in the Merger Agreement; (iii) there  shall
have  been no change in the business, properties, rights or operations of CyCare
which constitutes a Material  Adverse Effect; (iv) receipt  of a certificate  of
the  President of CyCare regarding  the matters in (i)  through (iii) above; (v)
receipt of certain legal opinions, including an opinion of Jones, Day, Reavis  &
Pogue to the effect that the Merger will qualify as a reorganization pursuant to
Section  368(a)  of the  Internal  Revenue Code  (the  "Code"); (vi)  receipt of
letters from affiliates of CyCare regarding compliance with Rule 145 and certain
pooling  of  interests  requirements;  (vii)  delivery  of  certain   additional
certificates  and  documents  by  CyCare, including  certain  consents  of third
parties; (viii) receipt of  letters from Ernst &  Young LLP and Arthur  Andersen
LLP  advising  HBOC  that  the Merger  may  be  accounted for  as  a  pooling of
interests; (ix) receipt of letters from Ernst & Young LLP regarding  information
about   CyCare  included   in  the   Registration  Statement;   (x)  receipt  of
non-competition agreements from certain  key employees of  CyCare; and (xi)  the
absence  of  any fees  or expenses  payable  to any  investment banking  firm or
similar entity that will  be incurred by CyCare  in connection with the  Merger,
except  fees  and  expenses  of  Broadview not  to  exceed  one  percent  of the
consideration to be received by CyCare's stockholders in the Merger.
 
    The obligation of  CyCare to consummate  the Merger is  contingent upon  and
subject  to the satisfaction  or waiver of  the following additional conditions;
(i) the representations and warranties of HBOC and HBOC-GA shall remain true and
correct  at  and  as  of  the   Closing  Date,  other  than  breaches  of   such
representations which cumulatively do not or could not reasonably be expected to
have  a Material Adverse  Effect; (ii) the  performance of covenants, agreements
and conditions by HBOC  and HBOC-GA as provided  in the Merger Agreement;  (iii)
there  shall  have  been  no  change  in  the  business,  properties,  rights or
operations of HBOC which constitutes a Material Adverse Effect; (iv) receipt  of
a certificate of the President of each of HBOC and HBOC-GA regarding the matters
in  (i) through (iii) above; (v) receipt of certain legal opinions, including an
opinion from Snell  & Wilmer to  the effect that  the Merger will  qualify as  a
reorganization  pursuant  to Section  368(a) of  the Code;  and (vi)  receipt of
letters from Ernst & Young LLP and Arthur Andersen LLP advising CyCare that  the
Merger may be accounted for as a pooling of interests.
 
   
    HART-SCOTT-RODINO.   The  Merger is subject  to the requirements  of the HSR
Act, which provides that certain transactions (including the Merger) may not  be
consummated  until  certain  information  has been  furnished  to  the Antitrust
Division  and  the  FTC  and  certain  waiting  period  requirements  have  been
satisfied.  HBOC and CyCare filed the required information and material with the
Antitrust Division  and the  FTC on  May 24,  1996 and  responded to  a  written
request  for additional information  received on June 21,  1996. HBOC and CyCare
were notified  that  the  waiting  period  was  terminated  on  July  16,  1996.
Satisfaction  of the waiting period requirement  does not preclude the Antitrust
Division, the FTC or  any other party  from challenging or  seeking to delay  or
enjoin the Merger on antitrust or other grounds.
    
 
    NO  SOLICITATION.  CyCare has agreed that prior to the Effective Time of the
Merger or  earlier  termination  of  the Merger  Agreement,  CyCare  shall  not,
directly  or indirectly, solicit, initiate, encourage, endorse or enter into any
agreement with respect to,  or take any action  to facilitate, any inquiries  or
the  making of any proposal or offer  for any tender or exchange offer, proposal
for a merger, share exchange or  other business combination involving CyCare  or
any  of its  subsidiaries or any  proposal or offer  to acquire in  any manner a
substantial equity interest in CyCare or a substantial
 
                                       30
<PAGE>
portion of the assets of  CyCare or any of its  subsidiaries with any person  or
entity;  provided, however, that the CyCare  Board may furnish information to or
enter into discussions or negotiations with any unsolicited person or entity if,
and to  the  extent that,  the  CyCare Board  determines  in good  faith,  after
receiving  written advice  from its outside  counsel, that such  action would be
required under applicable law  in the exercise of  its fiduciary duties.  CyCare
has  agreed  to notify  HBOC-GA if  any  such proposals  are received,  any such
information is  requested or  any  such inquiries  or discussions  with  respect
thereto are sought to be initiated or continued.
 
    TERMINATION.    The  Merger may  be  terminated  at any  time  prior  to the
Effective Time of the Merger  by: (i) mutual consent of  the HBOC Board and  the
CyCare  Board, notwithstanding  the prior  approval of  the CyCare stockholders;
(ii) HBOC, in the  event of material condemnation,  destruction, loss or  damage
due to fire or other casualty to the business assets of CyCare; (iii) HBOC-GA or
CyCare,  after September 30, 1996 if the other party fails to fulfill any of its
conditions, unless fulfillment  has been  frustrated or made  impossible by  the
party  seeking termination; (iv) CyCare,  if, in the good  faith exercise of its
fiduciary duties to the stockholders of CyCare  in the context of a proposal  to
acquire  CyCare by another party, the CyCare Board decides that such termination
is required.
 
    In the event  the Merger Agreement  is terminated by  a party in  accordance
with   (iii)  above  by  reason   of  a  breach  by   the  other  party  of  its
representations, warranties or covenants, then the breaching party shall pay the
non-breaching party $10 million, which  shall constitute liquidated damages  and
shall  be the sole and exclusive remedy  of the non-breaching party. Further, if
the Merger  Agreement  is  terminated  in  accordance  with  (iv)  above  or  in
accordance  with (iii) above by reason of  the failure to obtain the approval of
the CyCare stockholders, CyCare will be obligated to pay HBOC and HBOC-GA  their
reasonable  costs and expenses  incurred in connection  with the negotiation and
performance of the Merger Agreement, not to exceed $500,000, and, if the  Merger
Agreement  is terminated in accordance with (iv) above, CyCare will be obligated
to pay HBOC and HBOC-GA $10  million, which shall constitute liquidated  damages
and shall be the sole and exclusive remedy of HBOC and HBOC-GA.
 
ACCOUNTING TREATMENT
 
    Prior  to the consummation of the Merger,  each of the parties to the Merger
Agreement shall have received letters, dated as of the date hereof and as of the
Closing Date,  from Ernst  & Young  LLP and  Arthur Andersen  LLP regarding  the
appropriateness  of  pooling  of  interests  accounting  for  the  Merger  under
Accounting Principles  Board  Opinion  No.  16  if  closed  and  consummated  in
accordance with the Merger Agreement.
 
CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
    The  following summary, based  upon current law, is  a general discussion of
the principal federal income tax consequences of the Merger, assuming the Merger
is consummated as  contemplated herein.  This summary  is based  upon the  Code,
applicable  regulations promulgated  under the  Code by  the Treasury Department
("Treasury Regulations") and administrative rulings and judicial authority as of
the date hereof, all of which  are subject to change, possibly with  retroactive
effect.  Any such change  could affect the continuing  validity of this summary.
This summary applies to holders of CyCare Common Stock who hold their shares  of
CyCare Common Stock as capital assets. This summary does not discuss all aspects
of  income taxation that may be relevant to a particular holder of CyCare Common
Stock in light of  such holder's specific circumstances  or to certain types  of
holders  subject to  special treatment  under the  federal income  tax laws (for
example, foreign  persons,  dealers in  securities,  banks and  other  financial
institutions,  insurance  companies, tax-exempt  organizations, and  holders who
acquired CyCare Common Stock pursuant to the exercise of options or otherwise as
compensation), and it does  not discuss any aspect  of state, local, foreign  or
other  tax laws. Consequently, each holder of CyCare Common Stock should consult
its own tax advisor as  to the specific tax consequences  of the Merger to  that
stockholder.
 
    As  of  the date  of  this Proxy  Statement/Prospectus,  Snell &  Wilmer has
advised  CyCare  that  in  its  opinion  (i)  the  Merger  will  qualify  as   a
reorganization   pursuant   to   Section   368(a)   of   the   Code,   (ii)   no
 
                                       31
<PAGE>
gain or loss will be recognized by  CyCare as the result of the consummation  of
the Merger, and (iii) no gain or loss will be recognized by a CyCare stockholder
upon the exchange of the shares of CyCare Common Stock for shares of HBOC Common
Stock  pursuant  to the  Merger, except  on the  receipt  of cash  in lieu  of a
fractional share interest in HBOC Common Stock.
 
    As of the  date of  this Proxy  Statement/Prospectus, Jones,  Day, Reavis  &
Pogue  has advised  HBOC and  HBOC-GA that  in its  opinion (i)  the Merger will
qualify as a reorganization pursuant to Section  368(a) of the Code and (ii)  no
gain  or loss will be recognized by either HBOC, HBOC-GA or CyCare as the result
of the consummation of the Merger.
 
    The opinions of Snell &  Wilmer and Jones, Day,  Reavis & Pogue referred  to
herein  are based upon certain representations  and warranties of HBOC, HBOC-GA,
CyCare and one or more holders of CyCare Common Stock that are customarily  made
in  connection  with such  opinions, including  representations relating  to the
"continuity of interest"  requirement of the  Treasury Regulations. In  general,
the "continuity of interest" requirement is considered to be satisfied if 50% or
more  of  the  capital  stock  issued  in a  merger  is  held  by  the recipient
stockholders of the acquired entity following the merger other than under a plan
or intent to dispose of such  shares. To assist in satisfying this  requirement,
the  Merger Agreement provides that, prior to  the Effective Time of the Merger,
CyCare will deliver to HBOC and  HBOC-GA letters to the reasonable  satisfaction
of HBOC and HBOC-GA from CyCare and one or more of its stockholders that provide
assurance  that there  is no  plan or intention  on the  part of  the holders of
CyCare Common Stock (or knowledge of such plan or intent with respect to holders
of less than 5% of CyCare Common  Stock) to sell, exchange or otherwise  dispose
of  a number of  shares of HBOC Common  Stock received in  the Merger that would
reduce CyCare's stockholders'  ownership of  HBOC Common Stock  received in  the
Merger  to a number  of shares having a  value, as of the  Effective Time of the
Merger, of less than 50%  of the value of all  of the outstanding CyCare  Common
Stock immediately prior to the Effective Time of the Merger.
 
    No ruling has been requested from the Internal Revenue Service in connection
with  the Merger, and  the opinions referred  to above would  neither be binding
upon the  Internal Revenue  Service nor  preclude it  from adopting  a  contrary
position.  In  addition,  consummation of  the  Merger is  conditioned  upon the
receipt by CyCare, HBOC and HBOC-GA of the opinions described above dated as  of
the Closing Date.
 
    Provided   that  the  Merger  constitutes  a  tax-free  reorganization,  the
aggregate adjusted tax basis  of the HBOC Common  Stock received (including  any
fractional  share interests  deemed received)  by a  stockholder of  CyCare as a
result of the Merger will be the same as the aggregate adjusted tax basis of the
shares of  CyCare Common  Stock surrendered  in exchange  therefor. The  holding
period  of  the  HBOC  Common Stock  received  (including  any  fractional share
interests deemed received) by a stockholder of CyCare as a result of the  Merger
will include the holding period of the shares of CyCare Common Stock surrendered
in  exchange therefor. Any cash that a stockholder of CyCare receives in lieu of
a fractional interest in HBOC Common Stock will be treated as if the  fractional
share  were distributed in  the Merger and  then redeemed, resulting  in gain or
loss upon receipt of such cash taxed as provided in Section 302 of the Code.
 
    To prevent "backup  withholding" of federal  income tax on  any payments  of
cash to a CyCare stockholder in the Merger, a CyCare stockholder must, unless an
exception applies under the applicable law and regulations, provide the payor of
such cash with such holder's correct taxpayer identification number ("TIN") on a
substitute  Form W-9 and certify under penalties  of perjury that such number is
correct and  that  such  holder  is  not  subject  to  backup  withholding.  The
exceptions   provide  that   certain  holders  (including,   among  others,  all
corporations and certain foreign  individuals) are not  subject to these  backup
withholding  and reporting  requirements. In order  for a  foreign individual to
qualify as  an  exempt  recipient, however,  he  or  she must  submit  a  signed
statement  (I.E., Certificate of Foreign Status on Form W-8) attesting to his or
her exempt  status.  A Substitute  Form  W-9 will  be  provided to  each  CyCare
stockholder  in the letter of transmittal to  be mailed to each holder after the
 
                                       32
<PAGE>
Effective Time. If the  correct TIN and certifications  are not provided, a  $50
penalty  may be imposed on a CyCare stockholder by the Internal Revenue Service,
and any cash received by such  stockholder may be subject to backup  withholding
at a rate of 31%.
 
    THE  DISCUSSION OF  FEDERAL INCOME TAX  CONSEQUENCES SET FORTH  ABOVE IS FOR
GENERAL INFORMATION ONLY AND  IS BASED ON  EXISTING LAW AS OF  THE DATE OF  THIS
PROXY  STATEMENT/PROSPECTUS. STOCKHOLDERS OF  CYCARE ARE URGED  TO CONSULT THEIR
TAX ADVISORS TO DETERMINE THE PARTICULAR TAX CONSEQUENCES TO THEM OF THE  MERGER
(INCLUDING  THE APPLICABILITY AND  EFFECT OF FEDERAL,  STATE, LOCAL, FOREIGN AND
OTHER TAX LAWS).
 
NO APPRAISAL RIGHTS
 
    Because CyCare Common Stock is listed on the NYSE, the holders of shares  of
CyCare Common Stock will not be entitled to appraisal rights pursuant to Section
262 of the DGCL in connection with the Merger.
 
                                       33
<PAGE>
            INTERESTS OF CERTAIN PERSONS IN EACH OF HBOC AND CYCARE
 
SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT OF HBOC
 
   
    The  following  table sets  forth,  as of  July  16, 1996,  unless otherwise
indicated, certain information with respect to all stockholders known to HBOC to
beneficially  own  more  than  five  percent  of  the  HBOC  Common  Stock,  and
information  with  respect  to  HBOC Common  Stock  beneficially  owned  by each
director of HBOC, the Chief Executive Officer of HBOC and HBOC's four other most
highly compensated executive officers for the year ended December 31, 1995,  and
all  directors and executive  officers of HBOC  as a group.  Except as otherwise
indicated, the stockholders listed in the table have sole voting and  investment
powers with respect to HBOC Common Stock owned by them.
    
 
   
<TABLE>
<CAPTION>
                                                    AMOUNT AND NATURE
                                                      OF BENEFICIAL
      NAME AND ADDRESS OF BENEFICIAL OWNER              OWNERSHIP         PERCENT OF CLASS
- ------------------------------------------------  ----------------------  -----------------
<S>                                               <C>                     <C>
American Express Financial Corporation                    5,035,614(1)            6.22%
 IDS Tower 10
 Minneapolis, Minnesota 55440
FMR Corp.                                                 5,166,500(2)            6.39%
 82 Devonshire Street
 Boston, Massachusetts 02109
Putnam Investments, Inc.                                  5,196,136(3)            6.42%
 One Post Office Square
 Boston, Massachusetts 02109
Alfred C. Eckert III                                         20,000(4)            *
Holcombe T. Green, Jr.                                    1,228,860(5)            1.52%
Philip A. Incarnati                                             -0-               *
Alton F. Irby III                                            20,000(4)            *
Gerald E. Mayo                                               72,000(4)            *
Charles W. McCall                                         1,436,139(6)            1.78%
James V. Napier                                              57,088(7)            *
Charles E. Thoele                                            12,000(8)            *
Donald C. Wegmiller                                           5,000(4)            *
Jay P. Gilbertson                                             9,098               *
James A. Gilbert                                             76,196(9)            *
Albert J. Bergonzi                                           34,372(10)           *
Russell G. Overton                                           10,198               *
All Directors and Executive Officers
 as a Group (13 persons)                                  2,980,951               3.68%
</TABLE>
    
 
- ------------------------
 * Less than 1%
 
 (1)  According to the joint  Schedule 13G as of  December 31, 1995, of American
    Express Company ("AEC") and American Express Financial Corporation ("AEFC"),
    each of  AEC and  AEFC has  shared voting  power with  respect to  2,123,814
    shares  and has shared  dispositive power with  respect to 5,035,614 shares.
    Neither has sole  voting nor  sole dispositive  power with  respect to  such
    shares.  AEC,  the  parent  holding company  of  AEFC,  disclaims beneficial
    ownership of all such shares.
 
 (2) According  to the  Schedule  13G as  of December  31,  1995, of  FMR  Corp.
    ("FMR"),  FMR has sole dispositive power with  respect to all of such shares
    and sole voting power with respect to 499,700 shares.
 
                                       34
<PAGE>
 (3) According to  the joint Schedule  13G as  of December 31,  1995, of  Putnam
    Investments,  Inc. ("PI"), its parent, Marsh  & McLennan Companies, Inc. and
    PI's subsidiaries, Putnam Investment Management, Inc. ("PIM") and The Putnam
    Advisory Company, Inc. ("PAC"), PAC has shared voting and shared dispositive
    power with respect to 4,419,136 of such shares and PI has shared voting  and
    shared  dispositive  power with  respect to  535,300  and 5,196,136  of such
    shares.
 
 (4) Represents shares that  may be acquired through  the exercise of  presently
    exercisable stock options.
 
 (5)  Includes 430,000 shares that Mr. Green may acquire through the exercise of
    presently exercisable stock options;  11,460 shares held in  an IRA for  the
    benefit  of Mr. Green; 663,300 shares held by a limited partnership of which
    Mr. Green's wife is a general  partner and with respect to which  beneficial
    ownership  is disclaimed,  except to  the extent  of his  pecuniary interest
    therein; and 124,100 shares held by HTG  Corp. which is wholly owned by  Mr.
    Green.
 
   
 (6)  Includes 1,205,332  shares that  may be  acquired through  the exercise of
    presently exercisable stock options.
    
 
 (7) Includes 600 shares owned by  Mr. Napier's daughter and 30,000 shares  that
    may be acquired through the exercise of presently exercisable stock options.
 
 (8)  Includes  10,000  shares that  may  be  acquired through  the  exercise of
    presently exercisable stock options.
 
 (9) Includes 1,500 shares  owned by Mr. Gilbert's  son, 29,000 shares owned  by
    his wife and 12,000 shares that Mr. Gilbert may acquire through the exercise
    of presently exercisable stock options.
 
(10)  Includes  32,400  shares that  may  be  acquired through  the  exercise of
    presently exercisable stock options.
 
                                       35
<PAGE>
SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT OF CYCARE
 
   
    The following  table sets  forth,  as of  July  16, 1996,  unless  otherwise
indicated,  certain information with respect to all stockholders known to CyCare
to beneficially  own more  than five  percent of  the CyCare  Common Stock,  and
information  with  respect to  CyCare Common  Stock  beneficially owned  by each
director of CyCare,  the Chief  Executive Officer  of CyCare  and CyCare's  four
other most highly compensated executive officers for the year ended December 31,
1995,  and all directors and executive officers  of CyCare as a group. Except as
otherwise indicated, the stockholders listed in  the table have sole voting  and
investment powers with respect to CyCare Common Stock owned by them.
    
 
   
<TABLE>
<CAPTION>
                                              AMOUNT AND NATURE
                                                OF BENEFICIAL
   NAME AND ADDRESS OF BENEFICIAL OWNER           OWNERSHIP         PERCENT OF CLASS
- ------------------------------------------  ----------------------  -----------------
<S>                                         <C>                     <C>
AIM Management Group Inc.                          491,900(1)                9.71%
 11 Greenway Plaza
 Suite 1919
 Houston, Texas 77046
Jim H. Houtz                                       340,720(2)                6.72%
Richard J. Burgmeier                                63,000(3)                1.24%
Mark R. Schonau                                     31,889(4)               *
David H. Koeller                                    21,339(5)               *
Frank H. Bertsch                                    12,223(6)               *
Randy L. Skemp                                       5,176(7)               *
Bill W. Childs                                       7,870(8)               *
James L. Schamadan, M.D.                             6,125(9)               *
A. Theodore Engkvist                                 4,125(10)              *
All Directors and Executive Officers as a
 Group (10 persons)                                504,234(11)               9.95%
</TABLE>
    
 
- ------------------------
 * Less than 1%
 (1)  According to the Schedule  13G as of February  12, 1996, of AIM Management
    Group Inc. ("AIM"), on behalf of  itself and its wholly owned  subsidiaries,
    AIM  Advisors,  Inc. and  AIM Capital  Management, Inc.,  beneficially owned
    491,900 shares at December 31, 1995. According to the Schedule 13G, AIM  had
    shared voting and dispositive power over all 491,900 shares.
 (2)  Includes  20,000  shares that  may  be  acquired through  the  exercise of
    presently exercisable stock options  and 37,500 shares  held by Mr.  Houtz's
    wife for herself, over which Mr. Houtz shares voting and investment power.
 (3)  Includes 25,000 shares held by Mr. Burgmeier's wife, with respect to which
    beneficial ownership is disclaimed.
 (4) Includes  22,500  shares that  may  be  acquired through  the  exercise  of
    presently exercisable stock options.
 (5)  Includes  4,375  shares  that  may be  acquired  through  the  exercise of
    presently exercisable stock options.
   
 (6) Includes 625 shares that may be acquired through the exercise of  presently
    exercisable stock
    options.
    
   
 (7)  Includes  3,750  shares  that  may be  acquired  through  the  exercise of
    presently exercisable stock options.
    
   
 (8) Includes  6,250  shares  that  may be  acquired  through  the  exercise  of
    presently exercisable stock options.
    
   
 (9)  Includes 625 shares that may be acquired through the exercise of presently
    exercisable stock options.
    
   
(10) Includes 625 shares that may be acquired through the exercise of  presently
    exercisable stock options.
    
 
                                       36
<PAGE>
   
(11)  Includes 64,500  shares which  executive officers  and directors  have the
    right to acquire beneficial ownership of within 60 days.
    
 
INTERESTS OF CERTAIN PERSONS IN MATTERS TO BE ACTED UPON
 
    In considering the Merger,  holders of CyCare Common  Stock should be  aware
that the directors and executive officers of CyCare have interests in the Merger
in addition to their interests as stockholders of CyCare generally, as described
below.
 
    Pursuant  to  the  Merger  Agreement,  HBOC has  agreed  to  the  payment of
additional compensation in the  amount of $10,000 to  each member of the  CyCare
Board,  except Mr. Houtz, for extraordinary  service and availability during the
period from March 1996 through consummation of the Merger.
 
    HBOC-GA has agreed that subsequent to  the Closing Date, it will provide  to
the  directors and  officers of  CyCare indemnification  in accordance  with the
current provisions of the  Restated Certificate of  Incorporation and Bylaws  of
CyCare with respect to matters occurring prior to the Effective Time, including,
without  limitation,  the  Merger Agreement  and  the  transactions contemplated
thereby, for a period of five years from the Effective Time. See "Comparison  of
Rights of Holders of Shares of Each of HBOC Common Stock and CyCare Common Stock
- -- Liability and Indemnification of Officers and Directors."
 
    CyCare,  HBOC and HBOC-GA have entered into a letter agreement dated May 18,
1996 pursuant to which HBOC will grant certain stock options and other rights to
certain officers  of CyCare  contingent  upon the  consummation of  the  Merger.
Pursuant  to such letter agreement, among other  grants to officers of CyCare or
its subsidiary, HBOC  will grant  options to acquire  HBOC Common  Stock to  the
following  executive officers: David  Koeller, President-Group Practice, options
to purchase 30,000 shares; Randy Skemp, Senior Vice President-Sales and  Account
Management,  options to purchase 10,000 shares; and Carolyn Haupert, Senior Vice
President, options to purchase 10,000 shares, which in each case will vest  over
a  period of five  years at twenty  percent per year.  Additionally, HBOC-GA has
agreed to provide Mr. Koeller and Ms. Haupert with severance protection  whereby
if their employment is terminated without cause by HBOC-GA within three years of
the  Closing Date,  HBOC-GA will  continue to pay  Mr. Koeller's  salary for the
remaining portion of such three year period and HBOC-GA will continue to pay Ms.
Haupert's salary for twelve months subsequent to such termination. Finally, HBOC
has agreed  that contemporaneous  with the  granting of  stock options  to  HBOC
officers  and executives in early 1997, HBOC will grant stock options to certain
officers of CyCare or  its subsidiary, including Messrs.  Koeller and Skemp  and
Ms.  Haupert, on such terms and in such  amounts as are granted to HBOC officers
and employees  with like  responsibility,  without giving  regard to  the  stock
options granted in connection with the closing of the Merger. The length of time
such  persons have  been employed by  HBOC will  not be a  controlling factor in
determining the number of stock options granted in 1997, but will be one  factor
considered.
 
    In November 1995 and February 1996, the Compensation Committee of the CyCare
Board   considered  proposed   changes  to  Mr.   Houtz's  retirement  benefits.
Thereafter, effective  April  23,  1996,  CyCare agreed  to  amend  Mr.  Houtz's
supplemental executive retirement benefit plan. The plan provides that, upon Mr.
Houtz's  retirement from  CyCare or  attainment of  age 65,  whichever is later,
CyCare will pay him  monthly retirement benefits until  he attains age 70.  Upon
attainment  of age 70, Mr.  Houtz is entitled to  CyCare's interest in the joint
life insurance policies on Mr. Houtz and  his wife. Prior to the amendment,  the
monthly  retirement benefit payable to Mr. Houtz was equal to one-twelfth of 60%
of his average annual compensation during his last two years of employment, less
his Social Security benefits  and less the  retirement benefits attributable  to
his  account  under the  CyCare  Systems, Inc.  401(k)  Savings Plan.  Under the
amendment, the monthly retirement benefit is fixed at $25,154 and is not subject
to change based on increases or decreases in Mr. Houtz's annual compensation  or
subject  to reduction for other retirement benefits. The amendment also provides
that, in the event  of Mr. Houtz's death  prior to age 65,  CyCare will pay  the
retirement  benefits to his designated beneficiaries, beginning on the date that
Mr. Houtz would have attained age 65. Prior to the amendment, no benefits  would
be paid if Mr. Houtz were to die before age 65.
 
                                       37
<PAGE>
   
    On  July 15, 1996, HBOC-GA and Mr. Houtz entered into a consulting agreement
(the "Consulting Agreement"). Pursuant to the terms of the Consulting Agreement,
Mr. Houtz will perform consulting services for  up to 100 hours per month for  a
twelve  month  period commencing  on September  1, 1996.  Such services  will be
limited to issues regarding medical group practice, future technology direction,
EDI and customer relationships. As compensation for such services, HBOC-GA  will
pay  Mr.  Houtz $427,000  and HBOC-GA  will  provide Mr.  Houtz with  the fringe
benefits Mr. Houtz received during the  twelve months prior to the  commencement
of  such  agreement. Should  Mr. Houtz  die  during the  term of  the Consulting
Agreement, Mr.  Houtz's  designated  beneficiary  shall  receive  any  remaining
payments due thereunder.
    
 
    In  1992, CyCare  and Mark  R. Schonau  entered into  an Executive Severance
Agreement (the "Severance  Agreement"). Pursuant to  such agreement, should  Mr.
Schonau terminate his employment with HBOC, as the successor to CyCare, for good
reason  (as defined) following the Merger or should HBOC terminate Mr. Schonau's
employment without cause (as  defined) following the Merger,  HBOC shall pay  to
Mr.  Schonau a lump sum payment, the present  value of which shall equal 299% of
Mr. Schonau's base  salary. In  such case, HBOC  shall continue  to provide  Mr.
Schonau  and his eligible beneficiaries the employee benefits he was entitled to
receive prior to termination. These benefits  shall continue until the first  to
occur  of his attainment of alternate employment  or 24 months. In addition, if,
following the Merger, Mr. Schonau terminates his employment or his employment is
terminated by HBOC without cause, then Mr. Schonau shall be given the right, for
a period of  twelve months, to  cause HBOC to  purchase all of  the HBOC  Common
Stock  held by him  at a price  equal to the  higher of (i)  the average closing
price for  the HBOC  Common Stock  trading  on the  Nasdaq NM  for the  10  days
preceding  the termination date, and (ii) the  closing price on the Nasdaq NM on
the last trading day preceding the Merger.
 
    Additionally, in November 1995,  CyCare and Mr. Schonau  entered into a  two
year employment agreement. Commencing on May 1, 1996, and on each subsequent day
thereafter, Mr. Schonau's term of employment shall automatically be extended for
additional  eighteen month periods. If Mr. Schonau's employment is terminated by
HBOC without cause (as defined) or if  Mr. Schonau resigns with good reason  (as
defined),  HBOC, as  the successor  to CyCare  after the  Merger, shall  pay Mr.
Schonau twelve monthly  payments equal  to one-twelfth of  the sum  of his  base
salary  in effect immediately prior to his  termination, plus the average of the
annual incentive bonuses paid to Mr. Schonau for the two prior fiscal years.  In
addition,  HBOC shall pay Mr. Schonau  six monthly payments equal to one-twelfth
of his base salary immediately prior to the time such termination occurs. Should
Mr. Schonau  attain alternate  employment  during the  last  six months  of  the
eighteen  month payment period, HBOC's obligations will be reduced by the amount
of Mr.  Schonau's compensation  from  his new  employer  during this  six  month
period.  HBOC also shall provide Mr.  Schonau and his eligible beneficiaries all
employee benefits  he  was  entitled  to receive  prior  to  termination.  These
benefits  shall continue until the first to occur of his attainment of alternate
employment or eighteen months. Mr. Schonau  also will be allowed to continue  to
vest  in any  unvested stock options  for a  period of six  months following his
termination, as if he remained an employee during that period.
 
    Under CyCare's Long-Term Incentive Plan, if a change in control, such as the
Merger, occurs, all  outstanding options,  stock appreciation  rights and  other
awards  in  the  nature of  rights  that  may be  exercised  shall  become fully
exercisable and all restrictions on outstanding awards shall lapse. In addition,
HBOC has agreed to  assume all options granted  under the predecessor plan.  The
following  executive officers hold  options to purchase the  number of shares of
CyCare Common Stock set forth  below, which will vest,  and be assumed by  HBOC,
upon consummation of the Merger: Jim H. Houtz: 72,500; David H. Koeller: 51,250;
Mark R. Schonau: 46,250; Randy L. Skemp: 41,250; Carolyn S. Haupert: 26,250; and
Bill W. Childs: 31,250.
 
                                       38
<PAGE>
              COMPARISON OF RIGHTS OF HOLDERS OF SHARES OF EACH OF
                   HBOC COMMON STOCK AND CYCARE COMMON STOCK
 
INTRODUCTION
 
    HBOC  and  CyCare are  each  incorporated under  the  laws of  the  State of
Delaware. The  holders  of  shares  of CyCare  Common  Stock,  whose  rights  as
stockholders are currently governed by Delaware law, the Restated Certificate of
Incorporation,  as amended, of CyCare (the "CyCare Charter"), and the By-laws of
CyCare (the "CyCare Bylaws"), will, upon  the exchange of their shares  pursuant
to  the Merger, become holders of shares  of HBOC Common Stock, and their rights
as such will be governed by Delaware law, the HBOC Certificate of Incorporation,
as amended (the  "HBOC Charter"), and  the Amended and  Restated Bylaws of  HBOC
(the  "HBOC Bylaws"). The material differences  between the rights of holders of
shares of CyCare Common  Stock and of  the rights of holders  of shares of  HBOC
Common  Stock result from differences in their governing corporate documents and
are summarized below.
 
    The following summary  does not purport  to be a  complete statement of  the
rights  of holders of shares of HBOC Common Stock under applicable Delaware law,
the HBOC Charter and HBOC Bylaws  or a comprehensive comparison with the  rights
of  the holders of shares of CyCare  Common Stock under applicable Delaware law,
the CyCare Charter and CyCare Bylaws, or a complete description of the  specific
provisions referred to herein. The identification of specific differences is not
meant  to indicate  that other  equally or  more significant  differences do not
exist. This summary is qualified  in its entirety by  reference to the DGCL  and
the governing corporate documents of HBOC and CyCare, to which holders of shares
of  CyCare Common Stock are referred.  See "Incorporation of Certain Information
by Reference."
 
AUTHORIZED CAPITAL STOCK
 
    The DGCL  requires that  a corporation's  certificate of  incorporation  set
forth  the total number of shares of  all classes of stock which the corporation
has authority  to issue  and a  statement of  the designations  and the  powers,
preferences  and  rights, and  the  qualifications, limitations  or restrictions
thereof. The  HBOC  Charter  provides  that HBOC  has  authority  to  issue  (i)
250,000,000  shares of HBOC Common Stock  and (ii) 1,000,000 shares of preferred
stock, no par value. The CyCare  Charter provides that CyCare has the  authority
to  issue (i) 10,000,000 shares of CyCare Common Stock, (ii) 1,000,000 shares of
preferred stock, par value  $1.00 per share (the  "CyCare Preferred Stock")  and
(iii)  300,000 shares of Series A preferred stock, par value $.01 per share (the
"CyCare Series A Stock").  While the stockholders of  CyCare at the 1996  Annual
Meeting  approved an  amendment to the  CyCare Charter increasing  the number of
authorized shares of CyCare Common Stock to 25,000,000, such amendment will  not
be filed if the Merger is consummated.
 
BOARD OR STOCKHOLDER APPROVED PREFERRED STOCK
 
    The  DGCL permits a corporation's certificate  of incorporation to allow its
board of directors to issue, without stockholder approval, one or more series of
preferred or  preference  stock  and to  designate  their  rights,  preferences,
privileges  and restrictions.  The HBOC  Charter grants  such power  to the HBOC
Board of Directors (the "HBOC Board"). The HBOC Board has designated one  series
of  preferred  stock, the  Series A  Junior  Participating Preferred  Stock. See
"Incorporation of Certain  Information by  Reference." The  CyCare Charter  also
grants  such power to the CyCare Board,  provided that no Preferred Stock having
rights senior to those of the CyCare  Series A Stock may be issued unless  first
approved  by the  holders of a  majority of the  share of CyCare  Series A Stock
entitled to vote. The CyCare Board has designated one series of preferred stock,
the Series  A Stock,  in connection  with a  rights plan  previously adopted  by
CyCare, no shares of which have been issued.
 
VOTING RIGHTS
 
    The  DGCL states that,  unless a corporation's  certificate of incorporation
or, with respect to clauses (ii)  and (iii), the bylaws, specify otherwise,  (i)
each  share of  its capital stock  is entitled to  one vote, (ii)  a majority of
voting power of the shares entitled to vote, present in person or represented by
 
                                       39
<PAGE>
proxy, shall constitute a  quorum at a stockholders'  meeting, and (iii) in  all
matters  other  than the  election  of directors,  the  affirmative vote  of the
majority of the  voting power  of shares, present  in person  or represented  by
proxy  at the meeting and  entitled to vote on the  subject matter, shall be the
action of  the stockholders.  The holders  of shares  of HBOC  Common Stock  are
entitled to one vote per share on all matters to be voted on by the stockholders
of  HBOC. The holders of shares of CyCare  Common Stock are entitled to one vote
per share on all matters to be voted on by the stockholders of CyCare.
 
NUMBER OF DIRECTORS
 
    Under  the  DGCL,  unless  a  corporation's  certificate  of   incorporation
specifies  the number  of directors, such  number shall  be fixed by,  or in the
manner provided in, its bylaws. If a corporation's certificate of  incorporation
expressly  authorizes its board of  directors to amend its  bylaws, its board of
directors may change the authorized number  of directors by an amendment to  the
corporation's  bylaws,  if  fixed therein,  or  in  such manner  as  is provided
therein. If such certificate of incorporation specifies the number of directors,
the number  of directors  can only  be changed  by amending  the certificate  of
incorporation.  The HBOC Bylaws provide  that the number of  members of the HBOC
Board shall be  not less than  three nor more  than fifteen, such  number to  be
established  by the HBOC Board  or stockholders. The number  of directors on the
HBOC Board is currently nine (9). The  CyCare Bylaws provide that the number  of
directors shall not be less than three, which number may be changed from time to
time  by resolution of  the CyCare Board.  The CyCare Charter  provides that the
CyCare Board shall be  divided into three  classes, each class  to be as  nearly
equal  in number as possible and that, subject to that qualification, the number
of directors may  be increased or  decreased from  time to time.  The number  of
directors constituting the CyCare Board is currently five (5).
 
ELECTION OF BOARD OF DIRECTORS
 
    The  DGCL  provides that  a corporation's  directors shall  be elected  by a
plurality of the votes of the shares  present in person or represented by  proxy
at  the meeting  and entitled to  vote on  the election of  directors. Under the
DGCL, a corporation's certificate of incorporation may provide that stockholders
of a corporation  can elect  directors by  cumulative voting.  Neither the  HBOC
Charter nor the CyCare Charter provides for cumulative voting.
 
VOTE ON MERGER, CONSOLIDATION OR SALE OF SUBSTANTIALLY ALL ASSETS
 
    The DGCL generally requires approval of any merger, consolidation or sale of
substantially  all the assets of  a corporation at a  meeting of stockholders by
vote of the holders of a majority  of all outstanding shares of the  corporation
entitled  to  vote  thereon.  The certificate  of  incorporation  of  a Delaware
corporation may provide for a greater vote. The HBOC Charter generally  requires
the  affirmative vote  of four-fifths  of the  outstanding HBOC  Common Stock to
approve certain business combinations,  except under certain circumstances.  See
"--  Anti-Takeover  Protection."  The  CyCare  Charter  generally  requires  the
affirmative vote of two-thirds of  the outstanding CyCare Common Stock  entitled
to   vote  to  approve  certain  business  combinations,  except  under  certain
circumstances. See "-- Anti-Takeover Protection."
 
SPECIAL MEETINGS OF STOCKHOLDERS
 
    Under the DGCL, special stockholder meetings of a corporation may be  called
by  its board of directors and  by any person or persons  authorized to do so by
its certificate of incorporation or bylaws.  Under the HBOC Charter and  Bylaws,
special  meetings  of  the stockholders,  for  any purpose  or  purposes, unless
otherwise prescribed by statute, may be called  by the Chairman of the Board  or
the  President or by  holders of four-fifths  of the outstanding  shares of HBOC
Common Stock and shall be  called by the Chairman of  the Board or President  at
the  request in writing of three-fourths of the directors of HBOC. Such requests
shall state the purpose or purposes  of the proposed meeting. The CyCare  Bylaws
provide  that special meetings  of stockholders may be  called by written notice
for any purpose by the CyCare Board, the Chairman or Vice Chairman of the CyCare
Board or the President. The written notice of a special meeting shall state  the
purpose or purposes for which the meeting is called.
 
                                       40
<PAGE>
STOCKHOLDER ACTION BY WRITTEN CONSENT
 
    Under  the DGCL, any action by a corporation's stockholders must be taken at
a meeting of such  stockholders, unless a consent  in writing setting forth  the
action  so taken is signed by the  stockholders having not less than the minimum
number of votes necessary to authorize or take such action at a meeting at which
all shares entitled to vote thereon  were present and voted. Actions by  written
consent,  however, may not be taken if otherwise provided for in the certificate
of incorporation.  The  HBOC Charter  expressly  prohibits written  consents  by
stockholders;  the  CyCare  Bylaws  expressly  provides  for  action  by written
consents by stockholders.
 
AMENDMENT OF CERTIFICATE OF INCORPORATION
 
    The DGCL allows amendment of a corporation's certificate of incorporation if
its board of directors adopts a resolution setting forth the amendment proposed,
declaring  its  advisability,  and  the  stockholders  thereafter  approve  such
proposed  amendment, either  at a  special meeting called  by the  board for the
purpose of approval of such amendment by the stockholders or, if so directed  by
the  board, at the next  annual stockholders' meeting. At  any such meeting, the
proposed amendment generally must be approved  by a majority of the  outstanding
shares  entitled to vote. The  holders of the outstanding  shares of a class are
entitled to vote as a separate class  upon a proposed amendment, whether or  not
entitled  to vote thereon by the  certificate of incorporation, if the amendment
would increase or  decrease the aggregate  number of authorized  shares of  such
class,  increase or decrease the par value of the shares of such class, or alter
or change the powers, preferences, or special rights of the shares of such class
so as to affect them adversely. If any proposed amendment would alter or  change
the powers, preferences, or special rights of one or more series of any class so
as  to affect  them adversely, but  not affect  the entire class,  then only the
shares of the series so affected by the amendment will be considered a  separate
class  for  the  purposes  of  a  vote  on  the  amendment.  Under  the  DGCL, a
corporation's certificate of incorporation also  may require, for action by  the
board or by the holders of any class or series of voting securities, the vote of
a greater number or proportion than is required by the DGCL and the provision of
the  certificate of incorporation requiring such greater vote cannot be altered,
amended or repealed except  by such greater vote.  The HBOC Charter contains  no
provisions requiring a vote greater than that specified in the DGCL to amend the
HBOC Charter, except for those provisions relating to business combinations. See
"--   Anti-Takeover  Protection."  The  CyCare  Charter  contains  no  provision
requiring a vote greater  than that specified  in the DGCL  to amend the  CyCare
Charter,  except  for those  provisions relating  to  the classification  of the
CyCare Board  and  relating  to business  combinations.  See  "--  Anti-Takeover
Protection."
 
AMENDMENT OF BYLAWS
 
    Under  the DGCL, the power to adopt,  amend or repeal a corporation's bylaws
resides with the stockholders entitled to  vote thereon, and with the  directors
of  such corporation if such  power is conferred upon  the board of directors by
the certificate of incorporation. The HBOC Charter authorizes the HBOC Board  to
make,  alter or repeal the  HBOC Bylaws. The CyCare  Charter also authorizes the
CyCare Board to make, alter and repeal the CyCare Bylaws.
 
LIABILITY AND INDEMNIFICATION OF OFFICERS AND DIRECTORS
 
    The DGCL provides  that a corporation  may limit or  eliminate a  director's
personal  liability for monetary damages to  the corporation or its stockholders
for breach of fiduciary  duty as a  director, except for  liability (i) for  any
breach   of  the  director's  duty  of   loyalty  to  such  corporation  or  its
stockholders, (ii) for  acts or  omissions not in  good faith  or which  involve
intentional  misconduct  or a  knowing  violation of  law,  (iii) for  paying or
approving a stock repurchase in  violation of Section 174  of the DGCL, or  (iv)
for  any  transaction  from  which the  director  derived  an  improper personal
benefit. Both the HBOC Charter and the CyCare Charter provide for elimination of
personal liability subject to the statutory exceptions.
 
    Under the  DGCL, directors  and  officers as  well  as other  employees  and
individuals  may be  indemnified against  expenses (including  attorneys' fees),
judgments, fines and amounts paid in
 
                                       41
<PAGE>
settlement in connection with specified  actions, suits or proceedings,  whether
civil,  criminal, administrative or investigative (other than an action by or in
the right of the corporation as a derivative action) if they acted in good faith
and in a manner they reasonably believed to  be in, or not opposed to, the  best
interest  of  the  corporation, and,  with  respect  to any  criminal  action or
proceeding, if  they  had no  reasonable  cause  to believe  their  conduct  was
unlawful.  Both the HBOC Bylaws  and the CyCare Bylaws  provide to directors and
officers of HBOC and  CyCare indemnification to the  fullest extent provided  by
law. Additionally, Article IX of the HBOC Bylaws provides that expenses incurred
by  a person  in defending  a civil  or criminal  action, suit  or proceeding by
reason of the fact that he or she is a director, officer, employee or agent  may
be  paid in advance of the final disposition of such action, suit or proceeding,
upon receipt  of an  undertaking by  or  on behalf  of such  director,  officer,
employee  or agent to repay such amount unless it shall ultimately be determined
that he or she is entitled to  be indemnified by HBOC as authorized by  relevant
Delaware  law. Article  V of the  CyCare Bylaws provides  for indemnification by
CyCare to the fullest extent authorized by relevant Delaware law.
 
PAYMENT OF DIVIDENDS
 
    The DGCL permits the payment of  dividends and the redemption of shares  out
of a corporation's surplus. Under the DGCL, if a dividend is paid out of capital
surplus,  stockholders need not be so notified, and the dividends may in certain
cases also be paid out of net profits  for the fiscal year in which declared  or
out  of  net profits  for the  preceding fiscal  year. The  HBOC Charter  has no
provisions limiting the payment of dividends. The CyCare Charter does not  limit
the  payment of dividends, but the CyCare Charter provides that dividends (other
than dividends payable in  stock) may not  be paid to  holders of CyCare  Common
Stock unless dividends are also paid to holders of CyCare Series A Stock.
 
ANTI-TAKEOVER PROTECTION
 
    Under  the DGCL, a merger or consolidation generally must be approved by the
affirmative vote of the holders of a  majority of all of the outstanding  shares
of  stock entitled to vote thereon. However, no stockholder approval is required
if the acquiring corporation owns 90% or  more of the outstanding shares of  the
acquired corporation.
 
    In  addition to  the DGCL's general  requirements, Section 203  of the DGCL,
"Business Combinations with  Interested Stockholders,"  prohibits a  corporation
that  does not  opt out  of its provisions  from entering  into certain business
combination transactions with  "interested stockholders"  (generally defined  to
include persons beneficially owning 15% or more of the corporation's outstanding
capital  stock) unless certain super-majority votes are obtained. HBOC has opted
out of  Section 203  in its  Bylaws. However,  the HBOC  Charter places  certain
restrictions  on "Business  Combinations" (such  as a  merger) with "Controlling
Persons" (generally, a person  holding more than 10%  of the HBOC Common  Stock)
unless,  generally speaking, the  Business Combination has  been approved by the
affirmative vote of the  holders of four-fifths of  the outstanding HBOC  Common
Stock  not  held by  the  Controlling Person  or its  related  entities or  by a
majority of  directors who  were directors  prior to  the time  the  Controlling
Person  became  a  Controlling  Person  and  who  are  not  affiliated  with the
Controlling Person. Such provisions do not  apply to the Merger. CyCare has  not
opted out of Section 203 in the CyCare Charter. Additionally, the CyCare Charter
places  certain restrictions on certain transactions,  such as mergers and sales
of  substantially  all  of  the  assets  of  CyCare,  with  a  "Related  Entity"
(generally,  a person holding  more than 10%  of the shares  entitled to vote to
elect directors ) or an affiliate of a Related Entity unless such transaction is
approved by two-thirds of the  shares of CyCare voting  as a single class.  Such
provisions do not apply to the Merger.
 
APPRAISAL RIGHTS
 
    Under  the DGCL, stockholders  of corporations being  acquired pursuant to a
merger have  the  right to  serve  upon the  corporation  a written  demand  for
appraisal   of  their  shares   when  the  stockholders   receive  any  form  of
consideration  for  their  shares  other  than  (a)  shares  of  the   surviving
corporation,  (b)  shares of  any  other corporation  (i)  listed on  a national
securities exchange, (ii) designated as a national market system security on  an
inter-dealer quotation system by the National Association of Securities Dealers,
Inc. or (iii) held of record by more than 2,000 stockholders or (c) cash in lieu
of
 
                                       42
<PAGE>
fractional   shares,  or  any  combination  thereof.  Stockholders  entitled  to
appraisal rights subsequently  receive cash  from the corporation  equal to  the
value  of their  shares as established  by judicial  appraisal. Corporations may
enlarge  these  statutory   rights  by   including  in   their  certificate   of
incorporation  a provision allowing appraisal rights  in any merger in which the
corporation is  a constituent  corpora-tion. Neither  the HBOC  Charter nor  the
CyCare Charter contains such a provision.
 
    Because  CyCare Common Stock is listed on the NYSE, the holders of shares of
CyCare Common Stock will not be entitled to appraisal rights pursuant to Section
262 of the DGCL in connection with the Merger.
 
                                BUSINESS OF HBOC
 
    HBOC develops  integrated patient  care, clinical,  financial and  strategic
management  software solutions for  the healthcare industry.  These open systems
applications   facilitate   the   integration   of   clinical,   financial   and
administrative  data from a wide range  of customer systems and software. HBOC's
broad product portfolio  can be implemented  in a variety  of combinations  from
stand-alone   to   enterprisewide,   enabling  customers   to   add  incremental
capabilities to  existing  information  systems  without  making  prior  capital
investments   obsolete.  HBOC  also  provides   a  full  complement  of  network
communications  technologies,  including  wireless  capabilities,  as  well   as
outsourcing  services  that  are offered  under  contract  management agreements
whereby its  staff  manages  and operates  data  centers,  information  systems,
organizations  and business offices of  healthcare institutions of various sizes
and structures.
 
    HBOC markets  its  products  and  services  to  integrated  health  delivery
networks,  hospitals,  physicians' offices,  home health  providers, pharmacies,
reference laboratories, managed care providers and payers. At December 31, 1995,
HBOC had 2,700 customers of which 2,200 were United States community  hospitals.
Currently  there are a total of 5,300  community hospitals in the United States.
HBOC also sells its products  and services internationally through  subsidiaries
and/or  distribution agreements  in the  United Kingdom,  Canada, Ireland, Saudi
Arabia, Australia, Puerto Rico and New Zealand.
 
    As of December 31, 1995, the Company's customers include 897 active users of
patient care systems, 986 active  users of clinical/departmental systems,  1,298
active  users of financial systems, 755 active users of decision support systems
and 68 active users of enterprise information systems. In addition, HBOC had 183
networking technology customers and 15 outsourcing services sites.
 
    On May 14, 1996, the HBOC Board approved a two-for-one stock split  effected
in  the form of a stock dividend paid June  10, 1996 to all holders of record of
HBOC Common Stock on May 27, 1996.
 
    As of December 31, 1995, HBOC had 3,363 employees worldwide.
 
                               BUSINESS OF CYCARE
 
    CyCare is a leading provider of information systems, related support service
and EDI services to the healthcare industry, including physicians, medical group
practices, academic practice centers and integrated delivery networks.  CyCare's
services  and  systems are  based primarily  on open-systems  architecture using
software developed  or  acquired  by  CyCare to  improve  the  productivity  and
profitability  of  its customers.  Applications include  appointment scheduling,
patient  and  member  registration  information,  business  office   management,
electronic claims processing, patient care and patient accounting.
 
    CyCare  markets  its  products and  services  through  sales representatives
located in nine offices throughout the country. CyCare estimates that there  are
over  570,000 practicing physicians and  approximately 148,000 medical practices
in the United States. Approximately 70% of physician practices now use computers
or  computer  services  for  at  least  some  of  their  information  processing
requirements.  CyCare's customers are principally  located throughout the United
States.
 
                                       43
<PAGE>
    As of March 8, 1996, CyCare employed approximately 486 persons.
 
                             STOCKHOLDER PROPOSALS
 
    If the Merger is not consummated,  proposals of stockholders intended to  be
presented  at CyCare's 1997  Annual Meeting of Stockholders  must be received by
CyCare by November 29, 1996 for  inclusion in CyCare's proxy materials  relating
to  such meeting. In  the event the Merger  is consummated, there  will not be a
1997 Annual Meeting of Stockholders of CyCare.
 
                                 OTHER MATTERS
 
    The management of CyCare knows of no other matters that may come before  the
Meeting.  However, if matters other than those referred to above should properly
come before  the Meeting,  it  is the  intention of  the  persons named  on  the
enclosed  form  of  proxy to  vote  such  proxy in  accordance  with  their best
judgment.
 
                             CERTAIN LEGAL MATTERS
 
    The validity  of the  shares of  HBOC Common  Stock offered  hereby will  be
passed  upon for HBOC by  Jones, Day, Reavis &  Pogue, Atlanta, Georgia. Certain
tax matters in connection with  the Merger have been  passed upon for CyCare  by
Snell & Wilmer L.L.P, Phoenix, Arizona.
 
                                    EXPERTS
 
    The  audited  financial  statements  and schedule  of  HBOC  incorporated by
reference in this Proxy Statement/Prospectus  and elsewhere in the  Registration
Statement of which this Proxy Statement/ Prospectus is a part, to the extent and
for the periods indicated in their reports, have been audited by Arthur Andersen
LLP,  independent public accountants,  and are included  herein in reliance upon
the authority of said firm as experts in giving said reports.
 
    With respect to the unaudited interim financial information of HBOC for  the
quarters  ended March  31, 1995  and 1996,  which are  incorporated by reference
herein, Arthur Andersen LLP  has applied limited  procedures in accordance  with
professional standards for a review of that information. However, their separate
report thereon states that they did not audit and they do not express an opinion
on  that interim financial  information. Accordingly, the  degree of reliance on
their report on that  information should be restricted  in light of the  limited
nature  of the  review procedure applied.  In addition, the  accountants are not
subject to the  liability provisions of  Section 11 of  the Securities Act,  for
their  report on the unaudited interim financial information because that report
is not  a  "report"  or a  "part"  of  the Registration  Statement  prepared  or
certified  by the  accountants within the  meaning of  Sections 7 and  11 of the
Securities Act.
 
    The consolidated financial statements  of CyCare Systems, Inc.  incorporated
by  reference in CyCare Systems,  Inc.'s Annual Report (Form  10-K) for the year
ended December 31,  1995, which is  referred to and  made a part  of this  Proxy
Statement/Prospectus  and the Registration Statement, have been audited by Ernst
& Young  LLP,  independent  auditors,  as set  forth  in  their  report  thereon
incorporated  by reference therein and incorporated herein by reference, and are
included in reliance upon such report given  upon the authority of such firm  as
experts in accounting and auditing.
 
                                       44
<PAGE>
                                                                      APPENDIX A
 
                                EXPLANATORY NOTE
 
    The Merger Agreement was executed prior to May 27, 1996, the record date for
a two-for-one stock split effected in the form of a stock dividend paid June 10,
1996.  Accordingly, all  share and  per share  data regarding  HBOC Common Stock
herein have not been adjusted to give effect to such stock split.
 
                              AGREEMENT OF MERGER
 
    THIS AGREEMENT OF MERGER, made this 18th day of May, 1996, by and among  HBO
&  COMPANY,  a Delaware  corporation  ("Parent"); HBO  &  COMPANY OF  GEORGIA, a
Delaware corporation  (hereinafter  referred  to  as  "Purchaser");  and  CYCARE
SYSTEMS,  INC., a Delaware corporation (hereinafter referred to as the "Acquired
Company");
 
                              W I T N E S S E T H:
 
    WHEREAS, the  Boards  of  Directors  of the  Acquired  Company,  Parent  and
Purchaser  deem  it advisable  and  in the  best  interests of  their respective
stockholders that Purchaser acquire  the Acquired Company, and,  on or prior  to
the  date hereof, such Boards of Directors  have approved the acquisition of the
Acquired Company upon the terms and subject to the conditions set forth herein;
 
    NOW, THEREFORE,  in  consideration  of  the  foregoing  and  the  respective
representations,  warranties,  covenants and  agreements  set forth  herein, the
receipt,  sufficiency  and  adequacy  of  which  are  hereby  acknowledged,  and
intending to be legally bound hereby, the parties hereto agree as follows:
 
I.  DEFINITIONS.
 
    As used herein, the following terms shall have the following meanings unless
the context otherwise requires:
 
    1.1    "Acquired  Company"  shall  mean  CyCare  Systems,  Inc.,  a Delaware
corporation.
 
    1.2  "Acquired  Company Information"  shall have  the meaning  set forth  in
Section 2.3.1.
 
    1.3   "Acquired Company Reports" shall have the meaning set forth in Section
3.21.
 
    1.4  "Acquired Company Software" shall have the meaning set forth in Section
3.14.2(iii).
 
    1.5  "Acquired Company  Stock" shall mean the  common stock, $.01 par  value
per share, of the Acquired Company.
 
    1.6  "Agreement" shall mean this Agreement of Merger.
 
    1.7  "Benefit Plans" shall have the meaning set forth in Section 3.16.
 
    1.8   "Certificate of  Merger" shall have  the meaning set  forth in Section
2.1.2.
 
    1.9   "Certificates" shall  have  the meaning  set  forth in  Section  2.2.2
hereof.
 
    1.10  "Closing" shall have the meaning set forth in Section 2.1.9 hereof.
 
    1.11    "Closing Date"  shall  mean the  date  on which  the  Closing occurs
pursuant to Section 8.1 hereof.
 
    1.12  "Covenants  Not to Compete"  shall mean the  Covenants Not to  Compete
referred to in Section 6.11.
 
    1.13    "Customer Contracts"  shall have  the meaning  set forth  in Section
3.12.1.
 
    1.14  "Delaware Code" shall mean the Delaware General Corporation Law.
<PAGE>
    1.15  "Director  Stock Plan" shall  mean the CyCare  Systems, Inc.  Director
Stock Plan, effective October 18, 1994.
 
    1.16  "DOL" shall mean the United States Department of Labor.
 
    1.17   "Effective Time" shall mean the time the Merger becomes effective, as
set forth in Section 2.1.2.
 
    1.18  "Employee  Stock Purchase Plan"  shall mean the  CyCare Systems,  Inc.
Employee Stock Purchase Plan.
 
    1.19   "ERISA"  shall mean  the Employee  Retirement Income  Security Act of
1974, as amended.
 
    1.20  "ERISA  Affiliate" shall  mean, with respect  to a  Person, any  other
Person that is required to be aggregated with such Person under Tax Code Section
414(b), (c), (m) and/or (o) at any time prior to the Closing Date.
 
    1.21  "ERISA Plan" shall have the meaning set forth in Section 3.16.1.
 
    1.22   "Exchange  Act" shall  mean the Securities  Exchange Act  of 1934, as
amended.
 
    1.23  "Exchange Agent" shall mean the person designated by Purchaser as  the
Exchange Agent pursuant to Section 2.2.1 hereof.
 
    1.24   "Exchange  Ratio" shall  mean the ratio  of exchange  pursuant to the
Merger in  respect  of each  share  of  Acquired Company  Stock  constituting  a
fraction  of a share of Parent Stock as determined pursuant to the provisions of
Section 2.1.6.
 
    1.25  "401(k) Plan" shall mean the CyCare Systems, Inc. 401(k) Savings Plan.
 
    1.26  "HSR Act" shall mean the Hart-Scott-Rodino Antitrust and  Improvements
Act of 1976, as amended.
 
    1.27   "Hazardous  Substance" shall  have the  meaning set  forth in Section
3.18.
 
    1.28  "Interim 1996 Financial Statements"  shall have the meaning set  forth
in Section 3.5.1.
 
    1.29  "IRS" shall mean the United States Internal Revenue Service.
 
    1.30    "Licensed Software"  shall  have the  meaning  set forth  in Section
3.14.2(ii).
 
    1.31   "Long-Term  Incentive  Plan"  shall mean  the  CyCare  Systems,  Inc.
Long-Term Incentive Plan, effective March 1, 1995.
 
    1.32   "Material Adverse Effect" shall mean a material adverse effect on the
businesses, properties, rights or operations of the corporation in question  and
its subsidiaries, taken as a whole.
 
    1.33    "Material Contracts"  shall have  the meaning  set forth  in Section
3.12.9.
 
    1.34  "Merger" shall mean the merger  of the Acquired Company with and  into
Purchaser, as set forth in Section 2.1.1.
 
    1.35   "Merger  Consideration" shall have  the meaning set  forth in Section
2.1.6(a).
 
    1.36  "NASDAQ"  shall mean  the National Association  of Securities  Dealers
Automated Quotation System.
 
    1.37  "1933 Act" shall mean the Securities Act of 1933, as amended.
 
    1.38    "Owned Software"  shall  have the  meaning  set forth  in  the first
paragraph of Section 3.13.
 
    1.39  "Parent" shall  mean HBO & Company,  a Delaware corporation, which  is
the sole stockholder of Purchaser.
 
    1.40  "Parent Reports" shall have the meaning set forth in Section 4.6.
 
                                      A-2
<PAGE>
    1.41  "Parent Stock" shall mean the common stock, $0.05 par value per share,
of Parent.
 
    1.42    "Parent Subsidiaries"  shall mean  the  current subsidiaries  of the
Parent, as the same are identified in the Parent Reports.
 
    1.43  "PBGC" shall mean the Pension Benefit Guaranty Corporation established
under Title IV of ERISA.
 
    1.44  "Person" shall include, but is not limited to, an individual, a trust,
an estate,  a partnership,  an association,  a company,  a corporation,  a  sole
proprietorship, a professional corporation or a professional association.
 
    1.45    "Purchaser"  shall  mean  HBO  &  Company  of  Georgia,  a  Delaware
corporation.
 
    1.46  "Real Property" shall have the meaning set forth in Section 3.18.
 
    1.47  "Registration Statement" shall have  the meaning set forth in  Section
2.3.1.
 
    1.48  "SEC" shall mean the Securities and Exchange Commission.
 
    1.49   "Specified  Customer Contract"  shall have  the meaning  set forth in
Section 3.13 hereof
 
    1.50   "Stock Plans"  shall mean  the Director  Stock Plan,  Employee  Stock
Purchase Plan and Long-Term Incentive Plan.
 
    1.51   "Subsidiaries" shall  mean the subsidiaries  of the Acquired Company,
which are: CyData, Inc.
 
    1.52  "Surviving Corporation"  shall have the meaning  set forth in  Section
2.1.1 hereof.
 
    1.53   "Takeover Proposal" shall have the  meaning set forth in Section 2.11
hereof.
 
    1.54  "Tax Code" shall mean the Internal Revenue Code of 1986, as amended.
 
II.  COVENANTS AND UNDERTAKINGS.
 
    2.1  TERMS AND APPROVAL OF MERGER.
 
    2.1.1.  TERMS OF THE MERGER.   Upon the terms and subject to the  conditions
set  forth in  this Agreement,  and in  accordance with  the Delaware  Code, the
Acquired Company shall be merged with and into Purchaser (the "Merger"), as soon
as practicable following the satisfaction or waiver of the conditions set  forth
in Articles V, VI and VII hereof. Following the Merger, Purchaser shall continue
as  the  surviving corporation  (the "Surviving  Corporation") and  the separate
corporate existence of the Acquired Company shall cease.
 
    2.1.2.  EFFECTIVE  TIME; EFFECTS  OF THE MERGER.   The  Merger shall  become
effective  when both  (i) this  Agreement shall be  adopted and  approved by the
stockholders  of  the  Acquired  Company  in  accordance  with  the   applicable
provisions  of  the  Delaware  Code  and  (ii)  a  Certificate  of  Merger  (the
"Certificate of Merger"), executed in accordance with the relevant provisions of
the Delaware Code is filed with the Secretary of State of Delaware (the time the
Merger becomes effective being referred to as the "Effective Time"). The  Merger
shall have the effects set forth in the Delaware Code.
 
    2.1.3.    CERTIFICATE  OF  INCORPORATION AND  BYLAWS.    The  Certificate of
Incorporation of Purchaser as in effect immediately preceding the Effective Time
shall be  the Certificate  of Incorporation  of the  Surviving Corporation.  The
Bylaws  of Purchaser as in effect immediately preceding the Effective Time shall
be the Bylaws of the Surviving Corporation.
 
    2.1.4.  DIRECTORS.   The  directors of  Purchaser immediately  prior to  the
Effective  Time shall  be the directors  of the Surviving  Corporation and shall
hold office from the Effective Time  until their respective successors are  duly
elected  or appointed and qualified in the manner provided in the Certificate of
Incorporation and Bylaws of the Surviving Corporation, or as otherwise  provided
by law.
 
                                      A-3
<PAGE>
    2.1.5.    OFFICERS.   The  officers of  Purchaser  immediately prior  to the
Effective Time shall be the officers of the Surviving Corporation and shall hold
office from  the  Effective Time  until  their respective  successors  are  duly
elected  or appointed and qualified in the manner provided in the Certificate of
Incorporation and Bylaws of the Surviving Corporation, or as otherwise  provided
by law.
 
    2.1.6.   CONVERSION OF SHARES.  (a)  Subject to Section 2.1.6(g) below, each
outstanding share of Acquired Company  Stock issued and outstanding  immediately
prior  to the  Effective Time, shall,  at the  Effective Time, by  virtue of the
Merger and without any action  on the part of  the holder thereof, be  converted
into  the right to  receive .43 of a  share of Parent  Stock, deliverable to the
holder thereof, without interest on the value thereof, upon the surrender of the
certificate(s) formerly representing such outstanding share, provided,  however,
that:
 
        (i)  if the average  closing market price  per share (or  if there is no
    sale on any  such day,  then the  average between  the closing  bid and  ask
    prices  on any such day)  for shares of Parent  Stock during the twenty (20)
    consecutive trading days ending on the  third trading day prior to the  date
    of  the  special meeting  of stockholders  of the  Acquired Company  held to
    approve the Merger, as reported by the NASDAQ (the "Market Value"), is  less
    than  $104.50 per  share, then the  number of  shares of Parent  Stock to be
    received by the stockholders of the  Acquired Company shall be increased  so
    that the stockholders of the Acquired Company will receive for each share of
    Acquired  Company Stock  a fractional  share of  Parent Stock  determined by
    dividing $44.935 by the Market Value; and
 
        (ii) if the Market Value is more than $130.00 per share, then the number
    of shares of Parent Stock to be received by the stockholders of the Acquired
    Company shall be decreased so that the stockholders of the Acquired  Company
    will  receive for each share of Acquired Company Stock a fractional share of
    Parent Stock determined by dividing $55.90 by the Market Value.
 
(The shares  of  Parent  Stock, and  any  cash  in lieu  of  fractions  thereof,
receivable  by  each  Acquired Company  stockholder  as described  above  and in
Section  2.1.6(d)   below,  are   referred  to   hereinafter  as   the   "Merger
Consideration.")
 
    (b)  Each  share of  Acquired  Company Stock  held  in the  treasury  of the
Acquired Company  shall, at  the Effective  Time, by  virtue of  the Merger  and
without  any action on the part of  the holder thereof, be cancelled and retired
and cease to exist.
 
    (c) Subject to any applicable escheat laws, until surrendered and  exchanged
pursuant  hereto, each certificate that immediately  prior to the Effective Time
represented outstanding shares of Acquired Company Stock shall be deemed for all
corporate purposes of Parent, subject, however, to the other provisions of  this
Section 2.1.6, to evidence the ownership of the number of whole shares of Parent
Stock  into which the shares of Acquired Company Stock represented thereby shall
have been converted, and shall be deemed  to represent the right to receive  the
amount  of cash in lieu  of fractional shares, if any,  into which the shares of
Acquired Company Stock represented thereby shall have been converted pursuant to
subsection (a) of this Section 2.1.6. No interest shall be payable with  respect
to  any cash  payment in lieu  of fractional  shares. No cash  or stock dividend
payable, no  certificate representing  split shares  deliverable, and  no  other
distribution  payable or deliverable to holders of record of Parent Stock at any
time subsequent to the Effective Time shall  be paid or delivered to the  holder
of any certificate that at the Effective Time represented Acquired Company Stock
unless and until such certificate is surrendered to the Exchange Agent. However,
subject to any applicable escheat laws, upon such surrender, there shall be paid
or  delivered to  the holder  of record of  the certificate  or certificates for
Parent Stock issued and exchanged  therefor, the certificates for shares  and/or
other   property   resulting  from   any  such   dividends,  splits,   or  other
distributions, as the case may be, that shall have theretofore become payable or
deliverable with respect to  Parent Stock subsequent to  the Effective Time.  No
interest  shall  be payable  with respect  to  such payment  or delivery  of any
dividends or  other  distributions  upon  the  surrender  of  certificates  that
represented Acquired Company Stock at the Effective Time.
 
                                      A-4
<PAGE>
    (d)  No certificates or scrip representing fractional shares of Parent Stock
shall be issued  upon surrender  of certificates  representing Acquired  Company
Stock  converted  pursuant  hereto,  and  no  dividend,  stock  split,  or other
distribution of Parent shall relate to  any such fractional share interest,  and
no  such fractional share interest shall entitle the owner thereof to vote or to
any other rights  of a stockholder  of Parent.  In lieu of  any such  fractional
share, any holder of Acquired Company Stock shall be entitled, upon surrender in
accordance  herewith of  such holder's certificate  or certificates representing
Acquired Company Stock, to receive a cash payment therefor, without interest, at
a PRO RATA  amount based  on the  Market Value.  No interest  shall accrue  with
respect   to  any  cash  held  for  the  benefit  of  holders  of  unsurrendered
certificates theretofore representing  shares of Acquired  Company Stock at  the
Effective Time.
 
    (e)  All shares of  Parent Stock into  which shares of  the Acquired Company
Stock have been converted pursuant to this Section 2.1.6 shall be deemed to have
been issued in  full satisfaction  of all  rights pertaining  to such  converted
shares  and shall, when issued pursuant to  the provisions hereof, be fully paid
and nonassessable.
 
    (f) The stock transfer  books of Acquired Company  Stock shall be closed  at
the  Effective Time, and thereafter  no transfer of any  such shares of Acquired
Company Stock shall be recorded thereon. In the event a transfer of ownership of
shares of Acquired Company Stock is not recorded on the stock transfer books  of
the  Acquired Company, a certificate or  certificates representing the number of
whole shares of  the Parent  Stock into which  such shares  of Acquired  Company
Stock  shall have been converted in connection  with the Merger may be issued to
the transferee of such  shares of Acquired Company  Stock if the certificate  or
certificates  representing  such  shares of  Acquired  Company Stock  is  or are
surrendered to the Exchange Agent accompanied by all documents deemed  necessary
by  the Exchange  Agent to  evidence and  effect such  transfer of  ownership of
shares of Acquired  Company Stock  and by the  payment of  any applicable  stock
transfer  tax  with respect  to such  transfer, subject  to compliance  with any
restrictions or  conditions contained  herein with  respect to  the transfer  of
shares of Acquired Company Stock.
 
    (g)  In the event that Parent at any time or from time to time after May 13,
1996 but prior to the Effective Time effects a subdivision or combination of the
outstanding Parent Stock into  a greater or lesser  number of shares,  inclusive
without limitation of the stock split referenced in Section 4.3 hereof, then and
in  each such event the Exchange Ratio and the Market Value described in Section
2.1.6(a)  shall  be  increased  or  decreased  proportionately  and  the   other
provisions of this Section 2.1.6 shall be construed to give effect thereto.
 
    2.1.7.  STOCK PLANS.
 
    (a) At the Effective Time, Parent shall assume the Acquired Company's rights
and  obligations under each of the  outstanding options previously granted under
the Long-Term Incentive Plan (each such option existing immediately prior to the
Effective Time being called  an "Existing LTI Option,"  and each such option  so
assumed by Parent being called an "Assumed LTI Option"), by which assumption the
optionee  shall have the right to purchase that number of shares of Parent Stock
(rounded down to the nearest whole) into which the number of shares of  Acquired
Company  Stock  the optionee  was entitled  to purchase  under the  Existing LTI
Option would  have  been  converted pursuant  to  the  terms of  the  Merger  as
described  in Section 2.1.6  hereof. Each Assumed LTI  Option shall constitute a
continuation of  the  Existing  LTI Option,  substituting  Parent  for  Acquired
Company as issuer and employment by Parent, Purchaser or one of their respective
subsidiaries for employment by the Acquired Company. The aggregate price for the
total  number of shares of  Parent Stock at which the  Assumed LTI Option may be
exercised shall be  the aggregate  price at which  the Existing  LTI Option  was
exercisable  for the total  number of shares of  Acquired Company Stock, reduced
(as necessary for  purposes of rounding  down) to  the price that  will buy  the
number  of whole shares for which the  Assumed LTI Option will be exercisable in
accordance with this paragraph (a), and  the purchase price per share of  Parent
Stock  thereunder shall be such  aggregate price divided by  the total number of
shares of Parent Stock  covered thereby. Parent  and Purchaser acknowledge  that
the
 
                                      A-5
<PAGE>
Acquired  Company has advised Parent and Purchaser that all options issued under
the Long-Term Incentive Plan  will become immediately  and fully exercisable  in
accordance  with their terms upon a "change in control" of the Acquired Company,
as such term is  defined in such plan,  and that such a  change of control  will
have resulted on or prior to the Effective Time.
 
    (b) At the Effective Time, Parent shall assume the Acquired Company's rights
and  obligations under each of the  outstanding options previously granted under
the Director Stock Plan  that will have  fully vested prior  to Closing and  not
forfeited pursuant to the terms of the Director Stock Plan. Such assumed options
shall  be treated in  the manner provided  for in subsection  (a) hereinabove in
respect of Assumed LTI Options.
 
    (c) Parent and Purchaser acknowledge and  agree that at the Effective  Time,
all  shares of Restricted Stock  (as that term is  defined in the Director Stock
Plan) as to which the period of  restriction under such Director Stock Plan  and
related  Restricted  Stock  Agreement  shall have  previously  expired  shall be
exchanged for Merger Consideration in respect of the shares of Acquired  Company
Stock  represented  thereby in  accordance with  the  provisions of  Section 2.1
hereof. The  Acquired  Company  acknowledges  and  agrees  that  all  shares  of
Restricted  Stock as to  which such period  of restriction shall  not, as of the
Closing, have expired, shall be forfeited to the Acquired Company on the Closing
Date, and the Acquired Company shall cause the holders thereof to reconvey  such
shares  and deliver the certificates therefor and execute such stock assignments
or other instruments as  are reasonably acceptable to  Purchaser to effect  such
reconveyance and forfeiture.
 
    (d)  At the  written election of  an employee participating  in the Employee
Stock Purchase Plan (if received by Acquired Company and forwarded to Parent  at
least  fifteen (15) days prior to the  stockholders' meeting held to approve the
Merger), each option of such employee  outstanding as of the Closing Date  under
the Employee Stock Purchase Plan shall be cancelled and the holder thereof shall
receive  the number  of whole shares  of Parent  Stock into which  the shares of
Acquired Company Stock issuable to such holder as of the Closing Date would have
been converted, together with cash in lieu of any fractional shares. Absent such
election received on a timely basis  for any such employee, Parent shall  assume
the Acquired Company's rights and obligations under each option of such employee
outstanding  as of the Closing Date under  the Employee Stock Purchase Plan, and
each such option shall be adjusted in the manner provided for in subsection  (a)
hereinabove  in respect  of Assumed  LTI Options.  With respect  to elections of
employees to  cancel  options at  the  Closing Date,  the  number of  shares  of
Acquired Company Stock issuable to a participant as of the Closing Date shall be
determined by dividing the participant's payroll withholdings under the Employee
Stock  Purchase Plan as of  the Closing Date by the  per share exercise price of
the Acquired Company Stock under  the Plan as of the  first day of the  offering
period in progress on such date.
 
    2.1.8.   STOCKHOLDERS'  MEETING.  The  Acquired Company,  acting through its
Board of Directors, shall:
 
        (a) promptly furnish a copy  of the proxy statement/prospectus  included
    in  the  Registration  Statement  to  each  of  its  stockholders  after the
    Registration Statement has become effective with the SEC;
 
        (b) duly call, give notice of, convene and hold a special meeting of its
    stockholders  and  submit  this  Agreement  and  any  related  matters,   as
    appropriate, and the Merger to a vote of the Acquired Company's stockholders
    as soon as practicable for the purpose of considering and taking action upon
    this Agreement and any such related matters; and
 
        (c)  use  its  reasonable best  efforts,  subject to  the  provisions of
    Section 2.11,  to  obtain  the  necessary approval  of  the  Merger  by  its
    stockholders.
 
    2.1.9.    CLOSING; FILING  OF CERTIFICATE  OF  MERGER.   Upon the  terms and
subject  to  the  conditions  hereof,  as  soon  as  practicable  following  the
satisfaction  or waiver of  the conditions set  forth in Articles  V, VI and VII
hereof,  the  Acquired  Company  and  Purchaser  shall  execute  and  file   the
Certificate of Merger referred to in Section 2.1.2 in the manner required by the
Delaware Code, and
 
                                      A-6
<PAGE>
the  parties hereto  shall take  all such  other and  further actions  as may be
required by law to make the Merger effective. Prior to the filing referred to in
this Section 2.1.9,  a closing  (the "Closing")  will be  held as  set forth  in
Section 8.1 hereof, for the purpose of confirming all of the foregoing.
 
    2.1.10.  401(K) PLAN.  Prior to the Closing Date, the Acquired Company shall
adopt  appropriate resolutions and take any and all further actions necessary to
terminate the 401(k)  Plan effective as  of the date  immediately preceding  the
Closing Date. In addition, participants in the 401(k) Plan shall make no further
deferrals  under  such  plan and  the  Acquired  Company shall  make  no further
contributions to the 401(k) Plan, except for contributions necessary to  fulfill
obligations incurred through the termination date of the 401(k) Plan. Parent and
Purchaser  shall take such  action that will permit  current participants in the
401(k) Plan  who are  employed by  Purchaser to  (i) participate  in the  HBO  &
Company  Profit  Sharing and  Savings  Plan within  10  business days  after the
Closing Date and (ii) credit the Participant's Years of Service under the 401(k)
Plan toward vesting in contributions under the HBO & Company Profit Sharing  and
Savings Plan, up to a maximum of five years.
 
    2.2  DELIVERY OF MERGER CONSIDERATION.
 
    2.2.1.    EXCHANGE AGENT.    Prior to  the  Effective Time,  Purchaser shall
designate a bank or trust  company to act as  exchange agent in connection  with
the  Merger (the "Exchange  Agent"). At the Effective  Time, Purchaser or Parent
shall take  all steps  necessary to  enable and  cause Parent  or the  Surviving
Corporation  to provide the Exchange  Agent with the shares  of Parent Stock and
cash  in  respect  of  fractional   shares  necessary  to  deliver  the   Merger
Consideration  to  each  holder of  Acquired  Company Stock  as  contemplated by
Section 2.1.6 hereof prior to the time  that such deliveries are required to  be
made by the Exchange Agent as provided in this Section 2.2.
 
    2.2.2.       SURRENDER    OF   CERTIFICATES    AND   DELIVERY    OF   MERGER
CONSIDERATION.  Promptly after the Effective Time, the Exchange Agent shall mail
to each record holder (as of  the Effective Time) of an outstanding  certificate
or  certificates  that  immediately  prior  to  the  Effective  Time represented
outstanding shares of Acquired Company  Stock (the "Certificates"), a letter  of
transmittal  in customary form (which specifies that delivery shall be effected,
and risk of  loss and title  to the  Certificates shall pass,  only upon  proper
delivery  of the Certificates to the Exchange Agent) and instructions for use in
effecting  the  surrender  of  the  Certificates  in  exchange  for  the  Merger
Consideration  payable  in  respect  of the  shares  of  Acquired  Company Stock
formerly represented by such Certificate.  Upon surrender to the Exchange  Agent
of  a Certificate, together  with such letter  of transmittal properly completed
and duly executed,  together with any  other required documents,  the holder  of
such  Certificate shall be  entitled to receive in  exchange therefor the Merger
Consideration payable  in  respect  of  the shares  of  Acquired  Company  Stock
formerly  represented by such Certificate,  and such Certificate shall forthwith
be cancelled. If  payment is to  be made to  a Person other  than the Person  in
whose name the Certificate surrendered is registered, it shall be a condition of
payment  that  the  Certificate so  surrendered  shall be  properly  endorsed or
otherwise in  proper form  for  transfer and  that  the Person  requesting  such
payment  shall pay any transfer or other taxes required by reason of the payment
to a Person other than the  registered holder of the Certificate surrendered  or
establish  to the satisfaction of Parent  or the Surviving Corporation that such
tax has been paid or is not applicable. Until surrendered in accordance with the
provisions of  this Section  2.2.2,  each Certificate  shall represent  for  all
purposes  only the right to receive the Merger Consideration, payable in respect
of  the  shares  of  Acquired   Company  Stock  formerly  represented  by   such
Certificate, without any interest on the value thereof.
 
    2.2.3.   ESCHEAT LAWS.  Notwithstanding any  provision of this Article II to
the contrary, neither Parent  nor the Surviving Corporation  shall be liable  to
any  holder  of Certificates  formerly representing  shares of  Acquired Company
Stock for any property  properly delivered or amount  paid to a public  official
pursuant to any applicable abandoned property, escheat or similar law.
 
    2.3  SEC REGISTRATION.
 
    2.3.1.    The Acquired  Company shall  furnish  to Parent  such information,
including information about the Acquired Company and the Subsidiaries (including
the respective affiliates of any of them),
 
                                      A-7
<PAGE>
as may  be necessary  to  enable Parent  to  prepare and  file  with the  SEC  a
Registration  Statement  on Form  S-4  under the  1933  Act, and  the  rules and
regulations promulgated thereunder, in respect of the Parent Stock to be  issued
by  reason of the  Merger (such registration  statement, the prospectus included
therein and the proxy statement to be  furnished to the holders of the  Acquired
Company Stock, in each case together with any amendments or supplements thereto,
being  referred  to  in this  Agreement  as the  "Registration  Statement"). The
Acquired Company covenants  that the  Acquired Company  Information (as  defined
below)  included  in  the Registration  Statement  shall  not, at  the  time the
Registration  Statement  is   declared  effective,   at  the   time  the   proxy
statement/prospectus contained therein is first mailed to the Acquired Company's
stockholders,  or at the time of the meeting of the stockholders of the Acquired
Company held to approve the Merger,  contain any untrue statement of a  material
fact  or  omit to  state any  material fact  required to  be stated  therein, or
necessary in order to make the statements therein not misleading. If at any time
prior to  the  Effective Time  any  event or  circumstance  should come  to  the
attention  of  the  Acquired  Company  with  respect  to  the  Acquired  Company
Information that is required to  be set forth in  an amendment or supplement  to
the Registration Statement, the Acquired Company shall immediately notify Parent
and   shall  assist  Parent  in  appropriately  amending  or  supplementing  the
Registration Statement in  the manner  contemplated in Section  2.3.4 below.  An
amendment  or supplement  may be accomplished,  to the extent  permitted by law,
rule or regulation, by including such information in a filing under the Exchange
Act that  is incorporated  by  reference into  the Registration  Statement.  The
Registration  Statement  insofar as  it  relates to  information  concerning the
Acquired Company,  the  Subsidiaries  or any  of  their  respective  businesses,
assets,  directors, officers, or  stockholders or any  other affiliates or other
matters pertaining to  the Acquired  Company that  is supplied  by the  Acquired
Company  for inclusion in the Registration Statement, including by incorporation
by reference to SEC filings (the "Acquired Company Information") shall comply as
to form and substance in all material respects with the applicable  requirements
of  the Securities Act and the rules and regulations thereunder and the Exchange
Act and the rules and regulations  thereunder; except that the Acquired  Company
shall  have  no  liability or  obligation  for  any information  other  than the
Acquired Company Information.
 
    2.3.2.  The Acquired Company shall  instruct its accountants to deliver  and
shall  use its reasonable best  efforts to cause its  accountants, Ernst & Young
LLP, to deliver to Parent letters  dated at the time the Registration  Statement
becomes  effective  and  as  of  the Closing  Date,  addressed  to  Parent, each
containing both  (i)  its  opinion  to the  effect  that  the  Acquired  Company
satisfies  the tests applicable to it such  that the Merger can be accounted for
as a "pooling of interests"; and (ii) such matters as are customarily  contained
in  auditors' letters regarding information  about the Acquired Company included
in the  Registration  Statement,  and  each in  form  and  substance  reasonably
satisfactory  to Parent.  The Parent  shall use  its reasonable  best efforts to
cause its accountants, Arthur Andersen, LLP  to deliver to the Acquired  Company
letters  at  such  times to  the  effect  that the  Parent  satisfies  the tests
applicable to it  such that the  Merger can be  accounted for as  a "pooling  of
interests."
 
    2.3.3.   Parent shall file the Registration Statement and use its reasonable
best  efforts  to  have  it  declared  effective  by  the  SEC  as  promptly  as
practicable,  and  shall use  its  reasonable best  efforts  to take  any action
required to be  taken to  comply in all  material respects  with any  applicable
federal or state securities laws in connection with the issuance of Parent Stock
in the Merger; except that such covenant of Parent is made, as to those portions
of the Registration Statement containing or required to contain Acquired Company
Information,  assuming and  relying solely  on timely  and full  compliance with
Sections 2.3.1 and 2.3.2.
 
    2.3.4.  Parent covenants that  the information included in the  Registration
Statement, including Parent Reports and other Parent SEC filings incorporated by
reference therein, shall not, at the time the Registration Statement is declared
effective, at the time the proxy statement/prospectus contained therein is first
mailed  to the Acquired Company's stockholders, or at the time of the meeting of
the stockholders of the Acquired Company held to approve the Merger, contain any
untrue statement of a material fact or omit to state any material fact  required
to  be stated therein or  necessary in order to  make the statements therein not
misleading;  except   that   such   covenant   of  Parent   is   made,   as   to
 
                                      A-8
<PAGE>
those  portions of the Registration Statement  containing or required to contain
Acquired Company Information,  assuming and  relying solely on  timely and  full
compliance  with Sections 2.3.1 and 2.3.2. If at any time prior to the Effective
Time any event or circumstance  should come to the  attention of Parent that  is
required  to be  set forth  in an  amendment or  supplement to  the Registration
Statement, Parent shall immediately  notify Acquired Company  and shall use  its
reasonable  best efforts to  amend or supplement  appropriately the Registration
Statement. An  amendment  or  supplement  may be  accomplished,  to  the  extent
permitted  by law, rule or regulation, by including such information in a filing
under the Exchange Act that is  incorporated by reference into the  Registration
Statement.
 
    2.3.5.    Parent covenants  that the  Registration  Statement and  all other
documents required to be  filed by Parent  with the SEC  in connection with  the
transactions  contemplated herein shall  comply as to form  and substance in all
material respects with the applicable requirements of the Securities Act and the
rules and  regulations  thereunder  and  the Exchange  Act  and  the  rules  and
regulations thereunder; except that Parent shall have no liability or obligation
for  any failure to  comply with such  requirements arising out  of the Acquired
Company Information.
 
    2.3.6.  Parent shall use all reasonable best efforts to take such action  as
may  be  necessary to  ensure that  the  requirements of  Rule 144(c)  under the
Securities Act are satisfied  so as to enable  any "affiliates" of the  Acquired
Company  (as that term is used in Rule 145 under the Securities Act) to offer or
sell the Parent Stock received by them  in the Merger pursuant to paragraph  (d)
of  Rule 145 (subject to  compliance with the provisions  of paragraphs (e), (f)
and (g) of Rule 144).
 
    2.3.7.  Parent shall use all reasonable best efforts to obtain prior to  the
effective  date of the  Registration Statement all  necessary "Blue Sky" permits
and approvals, if any, required to consummate the Merger.
 
    2.3.8.  Within five (5) days following the Closing Date, Parent shall file a
registration statement covering shares of Parent Stock issuable pursuant to  the
Long-Term  Incentive Plan  and the Employee  Stock Purchase  Plan; although such
obligation is  subject to  and  conditional on  the Acquired  Company  providing
Parent with all information requested by Parent in connection therewith.
 
    2.4  AFFILIATES.
 
    (a) The Acquired Company shall use its reasonable best efforts to cause each
person  that is an "affiliate" of the  Acquired Company under the Securities Act
on the date of  the Acquired Company's stockholder  meeting held to approve  the
Merger  to deliver to Parent at the Closing a written agreement substantially in
the form attached hereto as EXHIBIT 2.4(A) ("Rule 145 Letters").
 
    (b) The Acquired Company shall use its reasonable best efforts to cause each
person that is an "affiliate" of  the Acquired Company under the Securities  Act
31  days prior  to the  date of  the Acquired  Company's stockholder  meeting to
deliver to the Parent on such date a written agreement substantially in the form
attached hereto as EXHIBIT 2.4(B) ("Pooling Letters").
 
    2.5  TRADING PROHIBITIONS.  The Acquired Company hereby acknowledges that as
a result  of  disclosures  by  Parent  and  Purchaser  contemplated  under  this
Agreement, the Acquired Company, the Subsidiaries and their affiliates may, from
time to time, have material, non-public information concerning Parent, Purchaser
and  their respective subsidiaries or affiliated companies. The Acquired Company
confirms that it, each of the  Subsidiaries and their affiliates are aware,  and
the Acquired Company has advised its representatives that, (i) the United States
securities  laws may prohibit a person  who has material, non-public information
from purchasing or selling securities of  any company to which such  information
relates,  and (ii) material non-public information  shall not be communicated to
any other person except as permitted herein.
 
    2.6  CONDUCT OF THE BUSINESS OF THE ACQUIRED COMPANY AND ITS SUBSIDIARIES
PRIOR TO CLOSING.
 
    2.6.1.  Except (i) with the prior  consent in writing of Purchaser, (ii)  as
may  be required to  effect the transactions contemplated  by this Agreement, or
(iii) as provided otherwise in this Agreement, the
 
                                      A-9
<PAGE>
Acquired Company covenants  that, between  the date  of this  Agreement and  the
Effective  Time, the  Acquired Company and  the Subsidiaries  will conduct their
respective business in the ordinary course, and that they will:
 
        (a)  preserve  the  organization  of   the  Acquired  Company  and   the
    Subsidiaries  intact and  use its  reasonable best  efforts to  preserve the
    goodwill of customers and others having business relations with the Acquired
    Company or the Subsidiaries;
 
        (b) use its reasonable  best efforts to maintain  the properties of  the
    Acquired  Company  and the  Subsidiaries in  substantially the  same working
    order and  condition as  such  properties are  in as  of  the date  of  this
    Agreement, reasonable wear and tear excepted;
 
        (c)  not  effect  any  sale,  assignment or  transfer  of  any  of their
    respective assets except in the ordinary course of business;
 
        (d) use its reasonable  best efforts to  keep in force  at no less  than
    their  present  limits  all  existing policies  of  insurance  or comparable
    replacements thereof  insuring the  Acquired Company,  the Subsidiaries  and
    their respective properties;
 
        (e)  except  as  set  forth  on EXHIBIT  2.6.1(E),  not  enter  into any
    contract, commitment, arrangement  or transaction of  the type described  in
    Section  3.12 hereof or suffer,  permit or incur any  of the transactions or
    events described  in  Section  3.9  hereof to  the  extent  such  events  or
    transactions  are within the control  of the Acquired Company  or any of the
    Subsidiaries (except  that the  Acquired Company  and the  Subsidiaries  may
    enter  into (i)  new (or  renew) license,  maintenance, service  and similar
    agreements with customers entered into  (or renewed) in the ordinary  course
    of  business on terms and prices  consistent with historical practices, (ii)
    contracts with software  vendors requiring  payments, in  the aggregate,  of
    less  than  $50,000)  and  (iii)  with  the  prior  written  consent  of the
    Purchaser, which  shall  not  be  unreasonably  withheld,  other  contracts,
    commitments,  arrangements, or  transactions of  the type  described in this
    Section 2.6.1(e) and which are with customers or software vendors that would
    not otherwise be permitted under subparagraphs (i) or (ii) hereof;
 
        (f) not make or permit  any change in the  Acquired Company's or any  of
    the Subsidiaries' Articles or Certificates of Incorporation or Bylaws, or in
    their  authorized, issued or outstanding securities (except for the issuance
    of Acquired Company Stock pursuant to exercise of stock options pursuant  to
    the Stock Option Plans and except as described on EXHIBIT 2.6.1(G));
 
        (g)  except as set forth on EXHIBIT 2.6.1(G), not grant any stock option
    or right to  purchase any security  of the  Acquired Company or  any of  the
    Subsidiaries, issue any security convertible into such securities, purchase,
    redeem,  retire or otherwise acquire any  of such securities (except for the
    acquisition of Acquired  Company Stock as  full or partial  payment for  the
    exercise  of options), or agree  to do any of  the foregoing or declare, set
    aside or pay any dividend, make any other distribution or declare any  split
    in respect of such securities;
 
        (h)  except as set forth on EXHIBIT  2.6.1(H), not adopt any new Benefit
    Plan or amend  or supplement  any existing Benefit  Plan, and  not make  any
    contribution  to  or distribution  from any  employee benefit  plan, pension
    plan, stock bonus plan, 401(k) plan  or profit sharing plan (except for  the
    payment  of  any health,  disability and  life  insurance premiums  that may
    become due and except for contributions or distributions required to be made
    (and not discretionary) pursuant to the terms of any Benefit Plans);
 
        (i) not change  the amortization  or capitalization  policies for  Owned
    Software  or otherwise  make any changes  in the accounting  policies of the
    Acquired Company and the Subsidiaries;
 
        (j)   not issue  any notes,  bonds or  other debt  security, or  create,
    incur,  assume or guarantee any indebtedness  for borrowed money without the
    prior written consent of  Purchaser, which consent  may not be  unreasonably
    withheld;
 
                                      A-10
<PAGE>
        (k)  not issue  any shares of  Acquired Company Stock  other than shares
    issued upon exercise  of options  or the  issuance of  shares of  restricted
    stock on July 1, 1996 pursuant to the Director Stock Plan in accordance with
    its terms which shares are the subject of Section 2.1.7(c) hereof;
 
        (l)  not alter in any manner  not permitted herein the terms, conditions
    or dates of vesting or exercise of any option to acquire stock or restricted
    stock or other equity awards;
 
        (m) not  effect  any  acquisition,  by  purchase  of  stock,  assets  or
    otherwise,  of any business or portion thereof  or of any Person without the
    prior written consent of  Purchaser, which consent  may not be  unreasonably
    withheld; and
 
        (n)  promptly advise Purchaser  in writing of any  matters arising or of
    which the Acquired Company  becomes aware after the  date of this  Agreement
    that,  if existing or known at the date  hereof, would be required to be set
    forth or described in this Agreement or the Exhibits hereto.
 
    2.6.2.   Except after  prior notification  to, and  with the  prior  written
consent  of, Purchaser,  which consent shall  not be  unreasonably withheld, the
Acquired Company shall not  make or permit any  Subsidiary to make, between  the
date of this Agreement and the Effective Time, any change in its banking or safe
deposit arrangements or grant any powers of attorney.
 
    2.7   FILING OF TAX RETURNS.  The Acquired Company shall submit all material
federal, state and  local tax returns  to Purchaser at  least fifteen (15)  days
prior  to the date they must be  filed, and Purchaser shall have the opportunity
to comment on such returns. The  Acquired Company shall give reasonable and  due
consideration  to any comments on such returns made by Purchaser in light of the
circumstances in which they were made.
 
    2.8  EXAMINATION OF PROPERTY AND RECORDS; CONFIDENTIALITY OF INFORMATION.
 
    2.8.1.   Between the  date of  this Agreement  and the  Effective Time,  the
Acquired  Company shall allow  Purchaser, its counsel  and other representatives
full access to  all the  books, records, files,  documents, assets,  properties,
contracts  and agreements of the Acquired  Company and the Subsidiaries that may
be reasonably requested, and the  Acquired Company shall furnish Purchaser,  its
officers  and representatives during such period with all information concerning
the affairs of the Acquired Company and the Subsidiaries that may be  reasonably
requested.  Between the date of this Agreement and the Effective Time the Parent
shall provide to the Acquired Company  such information about the Parent as  the
executive  officers of the Acquired Company reasonably request in the context of
the transactions provided for herein. All such requests shall be directed to the
Chief  Financial  Officer  of   the  Parent.  Each   party  shall  conduct   any
investigation  in  a  manner  that  will  not  unreasonably  interfere  with the
businesses of the other party.
 
    2.8.2.  All non-public information acquired by any party hereto pursuant  to
this  Section 2.8 or otherwise under this  Agreement, whether or not in writing,
concerning the  business, operations  and affairs  of any  other party  to  this
Agreement,  will be kept  confidential and will  not be disclosed  to any Person
other than the parties hereto or their authorized representatives (who shall  be
subject to the same obligations) and will not be used for any purpose other than
the  consummation of the  Merger and the  related transactions described herein,
subject to any legal disclosure obligation of any party upon advice from counsel
and prior  notice  to  the  other  party.  Promptly  upon  termination  of  this
Agreement,  and at the request  of any party hereto,  all written materials thus
obtained by any other  party or any  of its representatives  and all copies  and
extracts of such materials will be delivered to the disclosing party.
 
    2.9   CONSENTS AND APPROVALS.  The Acquired Company shall use its, and shall
cause the Subsidiaries to use their, reasonable best efforts (without  requiring
the  payment of money) to obtain the waiver, consent and approval of all persons
whose waiver, consent  or approval (i)  is required in  order to consummate  the
transactions  contemplated  by  this  Agreement  or  (ii)  is  required  by  any
agreement, lease, instrument, arrangement, judgment, decree, order or license to
which the  Acquired Company  or any  Subsidiary is  a party  or subject  on  the
Effective    Time    and   (a)    that   would    prohibit   or    require   the
 
                                      A-11
<PAGE>
waiver, consent or  approval of  any person to  such transactions  or (b)  under
which,  without  such  waiver,  consent  or  approval,  such  transactions would
constitute an occurrence of default under the provisions thereof, result in  the
acceleration  of any obligation thereunder or give  rise to a right of any party
thereto to terminate its obligations  thereunder. All obtained written  waivers,
consents  and  approvals  shall  be  produced at  Closing  in  form  and content
reasonably satisfactory  to Purchaser.  The  failure of  the Acquired  Party  to
obtain  any such  waiver, consent or  approval (after using  its reasonable best
efforts to do so)  shall not constitute  a breach of, or  a default under,  this
Agreement.
 
    2.10  SUPPLYING OF FINANCIAL STATEMENTS.  The Acquired Company shall deliver
to  Purchaser  all regularly  prepared  audited and  unaudited  consolidated and
consolidating financial statements of the Acquired Company and the  Subsidiaries
prepared  after the date of this  Agreement, in format historically published or
utilized internally (as applicable), and  any financial statements prepared  for
filing with the SEC, as soon as each is available.
 
    2.11  NO SOLICITATION.  The Acquired Company shall not, and shall not permit
any  of the Subsidiaries to, and the Acquired Company and the Subsidiaries shall
not authorize or permit any officer,  director or employee of, or any  financial
advisor,  attorney, accountant or  other advisor or  representative retained by,
the Acquired Company or any of the Subsidiaries to, solicit, initiate, encourage
(including by  way  of  furnishing  information),  endorse  or  enter  into  any
agreement with respect to, or take any other action to facilitate, any inquiries
or the making of any proposal that constitutes, or may reasonably be expected to
lead  to, any  Takeover Proposal  (as hereafter  defined). The  Acquired Company
shall immediately  advise  Purchaser  orally  and in  writing  of  any  Takeover
Proposal or any inquiries or discussions with respect thereto. Neither the Board
of  Directors  of  the Acquired  Company  nor  any committee  thereof  shall (a)
withdraw or modify, or  propose to withdraw  or modify, in  a manner adverse  to
Purchaser  the  approval or  recommendation  by the  Board  of Directors  of the
Acquired Company of the Merger or this Agreement or (b) approve or recommend, or
propose to approve or recommend, any Takeover Proposal or any other  acquisition
of  outstanding  shares of  Acquired Company  Stock other  than pursuant  to the
Merger or this  Agreement. Notwithstanding the  foregoing, nothing contained  in
this Agreement shall prevent the Board of Directors of the Acquired Company from
furnishing  information to or entering into discussions or negotiations with any
unsolicited person  or entity  if  and only  to the  extent  that the  Board  of
Directors  of the  Acquired Company shall  have determined in  good faith, after
receiving written  advice of  its outside  counsel, that  such action  would  be
required  under  applicable law  in the  exercise of  its fiduciary  duties. The
Acquired Company will immediately notify the Purchaser if any such inquiries  or
proposals  are received by, any such information  is requested from, or any such
negotiations or discussions  are sought to  be initiated or  continued with  the
Acquired  Company. As used in this Agreement, "Takeover Proposal" shall mean any
tender or exchange offer, proposal, other than a proposal by Purchaser or any of
its affiliates,  for a  merger,  share exchange  or other  business  combination
involving  the Acquired Company  or any of  the Subsidiaries or  any proposal or
offer to acquire  in any manner  a substantial equity  interest in the  Acquired
Company or any of the Subsidiaries or a substantial portion of the assets of the
Acquired Company or any of the Subsidiaries.
 
    2.12   HSR  ACT FILINGS.   Parent  and the  Acquired Company  shall each, in
cooperation with the  other, make the  required filings in  connection with  the
transactions  contemplated by this Agreement under  the HSR Act with the Federal
Trade Commission and the Antitrust Division  of the United States Department  of
Justice,  and shall request early termination of the waiting period with respect
to such filings. As promptly as practicable from time to time after the date  of
this  Agreement, each party shall make all such further filings and submissions,
and take such further  action, as may be  required in connection therewith,  and
shall  furnish the other  all information in  its possession necessary therefor.
Parent and the  Acquired Company shall  each notify the  other immediately  upon
receiving  any request for  additional information with  respect to such filings
from either the Antitrust Division of  the Department of Justice or the  Federal
Trade Commission, and the party receiving the request shall use its best efforts
to  comply  with such  request as  soon  as possible.  Neither such  party shall
withdraw any such filing or submission without the written consent of the other.
 
                                      A-12
<PAGE>
    2.13  TAX REPORTING.
 
    2.13.1.  For  federal and  state tax  purposes, Purchaser  and Parent  shall
report  the  transactions contemplated  by  this Agreement  as  a reorganization
within the meaning of Sections 368(a)(1)(A) and 368(a)(2)(D) of the Tax Code and
similar state laws.
 
    2.13.2.  Prior to the Effective  Time, the Acquired Company will deliver  to
Purchaser  and Parent  letters to the  reasonable satisfaction  of Purchaser and
Parent from the Acquired Company and certain of its stockholders that when  read
together provide assurance that there is no plan or intention on the part of the
stockholders of the Acquired Company (or knowledge of such plan or intent to the
extent the Acquired Company provides a representation with respect to holders of
less  than five percent (5%) of the Acquired Company Stock) to sell, exchange or
otherwise dispose of a number of shares  of Parent Stock received in the  Merger
that would reduce the Acquired Company's stockholders' ownership of Parent Stock
received in the Merger to a number of shares having a value, as of the Effective
Time,  of less than fifty  percent (50%) of the value  of all of the outstanding
stock of Acquired Company immediately prior to the Effective Time.
 
    2.14   INDEMNIFICATION OF  ACQUIRED  COMPANY OFFICERS  AND DIRECTORS.    The
Purchaser agrees that subsequent to the Closing it will provide to the directors
and  officers of  the Acquired  Company indemnification  in accordance  with the
current provisions  of  the Certificate  of  Incorporation and  By-Laws  of  the
Acquired  Company with respect to matters occurring prior to the Effective Time,
including, without limitation, this Agreement and the transactions  contemplated
hereby,  for a period of five years from  the Effective Time (or, in the case of
matters occurring prior to the Effective Time which have not been resolved prior
to the fifth anniversary of the  Effective Time, until such matters are  finally
resolved).  To the  fullest extent  permitted by  applicable law,  the Purchaser
shall advance expenses  in connection  with the  foregoing indemnification.  The
Parent  shall cause to be maintained in  effect for twelve (12) months following
the Closing the current policies of directors' and officers' liability insurance
currently maintained by the  Acquired Company, which  policies are described  on
EXHIBIT  3.19,  at no  greater than  one  hundred percent  (100%) of  the annual
premiums for such coverage as of the  date hereof (as reflected on such  EXHIBIT
3.19), provided that the Parent may substitute therefor policies of at least the
same  coverage containing  terms and  conditions that  are no  less advantageous
(including, without  limitation, coverage  under Parent's  existing policies  of
directors'  and officers' liability  insurance). In the  event that the premiums
for the continued coverage exceed  100% of the premiums  for the coverage as  of
the  date hereof (the "100% Amount"), Purchaser shall either substitute coverage
meeting the requirements of  the proviso in the  preceding sentence or  continue
the  existing  insurance  but reduce  the  maximum  amount of  coverage  to that
available for premiums equal to the 100% Amount.
 
    2.15  IOWA FACILITY.   In light  of the fact that  upon consummation of  the
Merger it is anticipated that the only electronic data interchange facilities of
the  Purchaser  will  be  located  at  the  Acquired  Company's  processing  and
development operation in Dubuque, Iowa, it is the present intention of Purchaser
to indefinitely continue in operation subsequent to the Closing such facility of
the Acquired Company in Dubuque, Iowa.
 
    2.16  CERTAIN REPORTS.  In the event the Merger is effective in the month of
July, 1996,  Parent  will use  its  reasonable  best efforts  to  make  publicly
available  through a filing with  the SEC the combined  results of operations of
Parent, Purchaser  and  Acquired  Company  for the  month  of  August,  1996  by
September  20, 1996. In  the event the  Merger is effective  later than July 31,
1996, Parent  will use  its  reasonable best  efforts  to include  the  combined
results  of operations of Parent, Purchaser  and Acquired Company for the thirty
(30) days following the effective date of the Merger in Parent's 10-Q  Quarterly
Report for the quarter ending September 30, 1996.
 
    2.17   REASONABLE BEST EFFORTS.   Parent, Purchaser and the Acquired Company
shall use their  respective reasonable  best efforts  to (a)  promptly make  all
filings  and seek to obtain all authorizations required under all applicable law
with respect to the  Merger and the other  transactions contemplated hereby  and
will cooperate with each other with respect thereto; (b) promptly take, or cause
to be
 
                                      A-13
<PAGE>
taken,  all  other  actions  and do,  or  cause  to be  done,  all  other things
necessary, proper or appropriate to satisfy the conditions set forth in Articles
V,  VI,  and  VII  and  to  consummate  and  make  effective  the   transactions
contemplated  by this Agreement on the terms  and conditions set forth herein as
soon as  practicable; and  (c) subject  to the  exercise in  good faith  by  the
Directors  or any officer of such party  of their fiduciary duties to such party
or its stockholders, not take any  action which might reasonably be expected  to
impair the ability of the parties to consummate the Merger prior to September 30
(regardless  of  whether  such  action  would  otherwise  be  permitted  or  not
prohibited hereunder).
 
III.  REPRESENTATIONS AND WARRANTIES OF THE ACQUIRED COMPANY.
 
    The Acquired  Company represents  and warrants  to Purchaser  and Parent  as
follows:
 
    3.1  ORGANIZATION, STANDING AND FOREIGN QUALIFICATION.
 
    3.1.1.   Each of the Acquired Company  and the Subsidiaries is a corporation
duly organized, validly  existing and  in good standing  under the  laws of  the
respective jurisdiction of its incorporation as set forth in EXHIBIT 3.1 and has
the  requisite corporate  power and  authority to carry  on its  business in the
places and as it is now being conducted and to own and lease the properties  and
assets that it now owns or leases.
 
    3.1.2.   Each of the Acquired Company and the Subsidiaries is duly qualified
and/or licensed  to  transact  business  and  in  good  standing  as  a  foreign
corporation in the jurisdictions listed in EXHIBIT 3.1 hereto, and the character
of the property owned or leased by the Acquired Company and the Subsidiaries and
the  nature of the business conducted by  them do not require such qualification
and/or licensing in any other jurisdiction where the failure to so qualify would
have a Material Adverse Effect upon the Acquired Company or Subsidiary.
 
    3.2  AUTHORITY AND STATUS.
 
    3.2.1.  The Board of Directors of the Acquired Company, by unanimous vote of
all directors present at a meeting duly called and held, has (i) determined that
the Merger is  fair to  and in  the best interests  of the  stockholders of  the
Acquired  Company  and  (ii) resolved  to  submit  the Merger  to  and recommend
approval of the Merger by the stockholders of the Acquired Company.
 
    3.2.2.  The Acquired Company has  the capacity and authority to execute  and
deliver  this  Agreement,  to  perform  hereunder  and,  upon  approval  of  the
transactions provided for herein by the stockholders of the Acquired Company, to
consummate the transactions contemplated hereby  without any other corporate  or
stockholder  approval. The execution,  delivery and performance  by the Acquired
Company of  this Agreement  and each  and every  other agreement,  document  and
instrument  to which the  Acquired Company is  a party provided  for herein have
been duly authorized  and approved  by the Board  of Directors  of the  Acquired
Company.  Assuming  this Agreement  and each  and  every agreement,  document or
instrument to be executed,  delivered and performed by  the Acquired Company  in
connection  herewith are valid and legally  binding obligations of Purchaser and
Parent, this Agreement and each and every agreement, document and instrument  to
be  executed,  delivered and  performed by  the  Acquired Company  in connection
herewith constitute or will, when  executed and delivered, constitute the  valid
and legally binding obligation of the Acquired Company enforceable against it in
accordance  with their respective terms, except as enforceability may be limited
by applicable equitable principles or by bankruptcy, insolvency, reorganization,
moratorium,  or  similar  laws  from  time  to  time  in  effect  affecting  the
enforcement  of creditors' rights generally. Attached  hereto as EXHIBIT 3.2 are
true, correct and  complete copies of  the current Articles  or Certificates  of
Incorporation and Bylaws of the Acquired Company and the Subsidiaries.
 
    3.2.3.   The Board of Directors of  the Acquired Company received an opinion
from Broadview Associates,  L.P., its financial  advisor, concurrently with  the
approval  described in Section 3.2.1 above  to the effect that the consideration
to be received by the Acquired Company's  stockholders in the Merger is fair  to
such stockholders from a financial point of view.
 
    3.3   CAPITALIZATION.   The entire authorized capital  stock of the Acquired
Company consists of Eleven Million Three Hundred Thousand (11,300,000) shares of
stock, of which Ten Million
 
                                      A-14
<PAGE>
(10,000,000) shares are designated Common Stock, par value $0.01 per share,  and
One  Million (1,000,000) shares are designated  Preferred Stock, par value $1.00
per share and Three  Hundred Thousand (300,000) shares  are designated Series  A
Preferred  Stock,  par value  $0.01 per  share. Of  the total  authorized Common
Stock, as of May 3, 1996, Five  Million Sixty Four Thousand Six Hundred  Seventy
(5,064,670)  shares were  issued and  outstanding and  One Million  Thirty Three
Thousand Two Hundred Eighty Seven (1,033,287)  shares were held in the  Acquired
Company's  treasury. Of  the total  authorized Preferred  Stock and  Preferred A
Stock, no  shares have  been  issued. As  of May  3,  1996, there  were  options
outstanding  under  the Long-Term  Incentive Plan  and  the Director  Stock Plan
entitling the  optionees thereunder,  upon  valid exercise,  to acquire  in  the
aggregate  Five Hundred Thirty Eight Thousand Two Hundred Fifty (538,250) shares
of Common Stock. As of May 3, 1996, there were Three Thousand (3,000) shares  of
restricted  stock outstanding under the Director  Stock Plan. All the issued and
outstanding shares of each of the Subsidiaries are owned by the Acquired Company
and are held free and  clear of all liens,  claims, charges and encumbrances  of
any  nature whatsoever. All of the  outstanding shares of Acquired Company Stock
(and any shares issued pursuant  to presently outstanding options, if  exercised
and purchased at the applicable exercise price) were duly authorized (or will be
when  issued  and  the  option  price  paid),  validly  issued,  fully  paid and
nonassessable. None of the capital stock of the Acquired Company is entitled  to
or  subject to preemptive  rights. Other than the  requisite stockholder vote to
consummate the Merger, the authorization or consent of no other person or entity
is required  in order  to  consummate the  transactions contemplated  herein  by
virtue  of any such person or entity  having an equitable or beneficial interest
in the Acquired Company or any Subsidiary  or the capital stock of the  Acquired
Company  or any  Subsidiary. Except as  set forth  on EXHIBIT 3.3,  there are no
outstanding options,  warrants,  calls, commitments  or  plans by  the  Acquired
Company or any Subsidiary to issue any additional shares of their capital stock,
to  pay  any dividends  on such  shares or  to purchase,  redeem, or  retire any
outstanding shares  of  their  capital  stock, nor  are  there  outstanding  any
securities  or obligations  that are  convertible into  or exchangeable  for any
shares of  capital stock  of the  Acquired Company.  Following the  Merger,  the
Acquired  Company will have no obligation to  issue, transfer or sell any shares
of capital stock  of any  of the  Subsidiaries. There are  not now,  and at  the
Effective  Time there  will not  be, any  voting trusts  or other  agreements or
understandings to which  the Acquired Company  or any of  the Subsidiaries is  a
party  or  is bound  with respect  to the  voting  of the  capital stock  of the
Acquired Company or any of the Subsidiaries.
 
    3.4  ABSENCE  OF EQUITY  INVESTMENTS.  Except  for the  Subsidiaries and  as
described  in EXHIBIT 3.4 hereto, the Acquired Company does not, either directly
or indirectly,  own  of  record  or beneficially  any  shares  or  other  equity
interests  in any corporation, partnership,  limited partnership, joint venture,
trust or other business entity.
 
    3.5  LIABILITIES AND OBLIGATIONS OF THE ACQUIRED COMPANY AND THE
SUBSIDIARIES.
 
    3.5.1.  Attached  hereto as  EXHIBIT 3.5.1  are true,  correct and  complete
copies  of  the Acquired  Company's consolidated  audited  balance sheets  as of
December 31,  1993, December  31, 1994  and December  31, 1995  and the  related
consolidated  statements of operations, stockholders'  equity and cash flows for
the years then ended, together  with the reports of  Ernst & Young LLP  thereon,
and an unaudited consolidated balance sheet as of March 31, 1996 and the related
consolidated  statements of operations, stockholders'  equity and cash flows for
the three-month  period then  ended  (respectively, the  "1993, 1994,  1995  and
Interim  1996  Financial Statements").  The 1993,  1994,  1995 and  1996 Interim
Financial Statements have  been prepared in  accordance with generally  accepted
accounting  principles, consistently applied, and fairly present in all material
respects the financial condition of the Acquired Company and the Subsidiaries as
of the  respective dates  thereof (subject,  in  the case  of the  Interim  1996
Financial  Statements,  to  the  absence of  footnotes  and  to  normal year-end
adjustments).
 
    3.5.2.  Neither the Acquired Company nor any Subsidiary has any liability or
obligation (whether  accrued,  absolute,  contingent  or  otherwise)  including,
without  limitation, any liability that might result  from an audit of their tax
returns by  any  appropriate  authority,  except for  (a)  the  liabilities  and
obligations  of the Acquired Company and  the Subsidiaries that are disclosed or
reserved
 
                                      A-15
<PAGE>
against in the Interim 1996 Financial  Statements, EXHIBIT 3.5.2 hereto, or  the
notes  to the 1995 Financial Statements, in  each case to the extent and (except
in the case of EXHIBIT 3.5.2) in  the amounts so disclosed or reserved  against,
(b)  liabilities incurred  or accrued in  the ordinary course  of business since
March 31,  1996 and  liabilities incurred  in connection  with the  transactions
referred  to herein, (c) any liabilities to the extent disclosed in the Acquired
Company Reports, and (d) any other  liabilities which would not have a  Material
Adverse Effect.
 
    3.5.3.   Except  as disclosed  in the  Interim 1996  Financial Statements or
EXHIBIT 3.5.2, neither  the Acquired Company  nor any Subsidiary  is in  default
with  respect to any liabilities or obligations, the default of which would have
a Material Adverse  Effect, and  all such  liabilities or  obligations shown  or
reflected  in the  Interim 1996 Financial  Statements or EXHIBIT  3.5.2 and such
liabilities incurred or accrued subsequent to  March 31, 1996 have been, or  are
being,  paid and discharged as  they become due (except  as disclosed in EXHIBIT
3.5.2), and all such liabilities and  obligations were incurred in the  ordinary
course of business except as indicated in EXHIBIT 3.5.2.
 
    3.6  TAX RETURNS.
 
    3.6.1.   The  Acquired Company  and the  Subsidiaries have,  as of  the date
hereof, and will prior to the  Effective Time have, timely and accurately  filed
all  federal,  state,  foreign  and local  income,  franchise,  sales,  real and
personal property and other tax returns and reports required to be filed by them
prior to such dates and  have timely paid, or will  prior to the Effective  Time
timely  pay, all  taxes shown on  such returns as  owed for the  periods of such
returns, including all withholding or other payroll related taxes shown on  such
returns, except where the failure to so file any such return or report would not
have  a Material Adverse Effect upon the Acquired Company or any Subsidiary. The
tax basis  of  all  assets of  the  Acquired  Company and  the  Subsidiaries  as
reflected  on their books  and records is  correct and accurate  in all material
aspects.  No   material  assessments   or  notices   of  deficiency   or   other
communications  have been  received by the  Acquired Company, nor  have any been
threatened, with  respect  to  any such  tax  return  that has  not  been  paid,
discharged or fully reserved in the Interim 1996 Financial Statements or EXHIBIT
3.6.1  hereto, and no amendments  or applications for refund  have been filed or
are planned with  respect to any  such return.  Except as set  forth on  EXHIBIT
3.6.1,  there are no  agreements between the Acquired  Company or any Subsidiary
and any taxing  authority, including,  without limitation, the  IRS, waiving  or
extending any statute of limitations with respect to any tax return, and neither
the  Acquired Company nor any Subsidiary has filed any consent or election under
the Tax Code, including, without  limitation, any election under Section  341(f)
of the Tax Code.
 
    3.6.2.    Listed  on EXHIBIT  3.6.2  are all  employment  related agreements
executed by or in favor of or benefits in favor of the officers of the  Acquired
Company,  including without limitation  any and all  agreements or benefits that
could obligate  the Acquired  Company or  any Subsidiary,  or any  successor  in
interest, to make any parachute payments as such term is defined in Section 280G
of  the Code. No such  agreement or benefit, or  any other agreement or benefit,
obligate the Acquired Company or any  Subsidiary, or any successor in  interest,
to make payments to any officers of the Acquired Company on account of any taxes
owed by such officers.
 
    3.6.3.   The Acquired Company and  the Subsidiaries (a) have withheld proper
and accurate amounts in  compliance with the tax  withholding provisions of  all
applicable  laws for all compensation paid to  the officers and employees of the
Acquired Company and the Subsidiaries, (b) have correctly and properly  prepared
and  duly and  timely filed  all returns and  reports relating  to those amounts
withheld from their officers and employees  and to their employer liability  for
employment  taxes under the Tax Code and applicable state and local laws and (c)
have duly and timely paid and remitted to the appropriate taxing authorities the
amounts withheld from their  officers and employees  and any additional  amounts
that  represent  their employer  liability under  applicable law  for employment
taxes.
 
    3.6.4.  The income tax returns of the Acquired Company have been audited  by
the  IRS for  all tax  years through  the year  ended December  31,1992, and all
taxes, deficiencies, penalties and interest relating to such tax years have been
fully paid and satisfied by the Acquired Company.
 
                                      A-16
<PAGE>
    3.6.5.  To the knowledge of the Acquired Company no issue has been raised by
the IRS, any  state or  local taxing authority,  or any  other investigation  or
audit,  that will have, or can be expected to have, a Material Adverse Effect on
the Acquired Company or any Subsidiary.
 
    3.6.6.   The 1993,  1994, 1995  and the  Interim 1996  Financial  Statements
include,  and the  accounts of  the Acquired  Company and  the Subsidiaries will
include, for  all  periods  up  to and  including  the  Closing  Date,  adequate
provision  for  all  unpaid  applicable  taxes,  assessments,  fees  and charges
relating to the  Acquired Company  and the  Subsidiaries known  to the  Acquired
Company.
 
    3.6.7.   Neither the Acquired Company nor any Subsidiary is a "United States
real property holding corporation"  as defined in Section  897(c)(2) of the  Tax
Code.
 
    3.7   OWNERSHIP OF ASSETS.   The Acquired Company  and the Subsidiaries have
title to all of their respective properties  and assets used or useful in  their
respective  businesses,  other  than  leased  property,  licensed  property  and
immaterial items of personal property (which  in each case the Acquired  Company
or  the Subsidiary has  the right to  use), in each  case free and  clear of any
liens, security interests, claims, charges, options, rights of tenants or  other
encumbrances, except as disclosed or reserved against in Exhibit 3.7 or reserved
against  in the Interim 1996 Financial Statements (to the extent so disclosed or
reserved against) and except  for liens arising from  current taxes not yet  due
and  payable and  other immaterial  liens. Except  as disclosed  on Exhibit 3.7,
neither the Acquired Company, nor any Subsidiary, has received any payment  from
a  lessor in connection with or as inducement for entering into a lease in which
the Acquired Company or a  Subsidiary is a lessee  or licensee, except fees  and
similar  payment in historical  amounts and in the  ordinary course of business.
Except as  disclosed  on  EXHIBIT  3.7, all  buildings  and  material  items  of
machinery  and  equipment  owned  or  leased  by  the  Acquired  Company  or any
Subsidiary are  in good  operating  condition and  reasonable state  of  repair,
subject  only  to ordinary  wear and  tear.  Except as  reserved against  in the
Interim 1996 Financial Statements, the  inventories of the Acquired Company  and
the  Subsidiaries  consist  only  of  items  of  supplies  and  computer-related
equipment of  a  quality and  quantity  usable in  the  normal course  of  their
businesses.  Neither the  Acquired Company nor  any Subsidiary  has received any
notice of violation of any applicable zoning regulation, ordinance or other law,
regulation or requirement relating to  their operations and properties,  whether
owned  or leased. All of the accounts receivable of the Acquired Company and the
Subsidiaries as of the Effective Time will reflect actual transactions and  will
have arisen in the ordinary course of business.
 
    3.8   AGREEMENT DOES NOT VIOLATE OTHER  INSTRUMENTS.  Except as set forth on
EXHIBIT 3.8 hereto, the execution and delivery of this Agreement by the Acquired
Company does not, and the  consummation of the transactions contemplated  hereby
will  not, violate any provision of the Articles of Incorporation or Certificate
of Incorporation, as amended, or Bylaws, as amended, of the Acquired Company  or
any  Subsidiary or, except as set forth on EXHIBIT 3.8, violate or constitute an
occurrence of default  under any provision  of, or conflict  with, or result  in
acceleration  of any obligation under,  or give rise to a  right by any party to
terminate its obligations under, any  Material Contract, or any order,  judgment
or decree to which the Acquired Company or any Subsidiary is a party or is bound
or  by which  the Acquired Company's  or any Subsidiaries'  assets are affected;
provided that for purposes  of this Section 3.8,  "Material Contract" shall  not
include  any contracts or agreements identified on EXHIBIT 3.14.2(IV)(B). Except
for the applicable requirements of the HSR Act, the 1933 Act, the Exchange  Act,
applicable  Blue Sky laws, and  except as set forth  on EXHIBIT 3.8, no consent,
approval, order  or authorization  of, or  registration, declaration  or  filing
with,  any governmental  entity is required  to be  obtained or made  by or with
respect to the  Acquired Company, any  Subsidiary or any  assets, properties  or
operations  of the  Acquired Company  or any  Subsidiary in  connection with the
execution and  delivery  by  the  Acquired Company  of  this  Agreement  or  the
consummation of the transactions contemplated hereby.
 
    3.9   ABSENCE OF CERTAIN CHANGES OR  EVENTS.  Except as disclosed on EXHIBIT
3.9, since March 31, 1996, the Acquired Company and each of the Subsidiaries has
operated in the  ordinary course  of business  and there  has not  been (i)  any
material damage, destruction or other casualty loss with
 
                                      A-17
<PAGE>
respect  to  property owned  or leased  by the  Acquired Company  or any  of the
Subsidiaries, whether or not covered by insurance, or any strike, work  stoppage
or  slowdown or other labor trouble involving the Acquired Company or any of the
Subsidiaries; (ii)  any  increase  in  dividends  or  employee  compensation  or
benefits  payable  by  the  Acquired Company,  except  for  normal  increases in
compensation consistent, in amounts and timing, with historical practices; (iii)
any change in accounting methods;  or (iv) any transaction, commitment,  dispute
or  other event or condition that has resulted in any Material Adverse Effect in
respect of the Acquired Company or any of the Subsidiaries.
 
    3.10  LITIGATION.   Except as  otherwise set forth  in EXHIBIT 3.10  hereto,
there  is  no  suit,  action, arbitration,  proceeding,  claim  or investigation
pending or, to  the knowledge  of the  Acquired Company,  threatened against  or
affecting  the Acquired  Company or  any Subsidiary  that would  have a Material
Adverse Effect, and, to the knowledge  of the Acquired Company, there exists  no
reasonable  basis or grounds for any such suit, action, arbitration, proceeding,
claim or investigation.
 
    3.11  LICENSES AND PERMITS; COMPLIANCE  WITH LAW.  The Acquired Company  and
the Subsidiaries hold all licenses, certificates, permits, franchises and rights
from  all appropriate federal,  state or other  public authorities necessary for
the conduct  of their  respective businesses  and the  use of  their  respective
assets,  except for such licenses,  certificates, permits, franchises and rights
the absence of which would not have  a Material Adverse Effect. Except as  noted
in  EXHIBIT 3.11,  and except  for any  matters which  will not  have a Material
Adverse Effect in  respect of  the Acquired  Company and  the Subsidiaries,  the
Acquired  Company and the Subsidiaries presently are conducting their respective
businesses so  as to  comply with  all applicable  statutes, ordinances,  rules,
regulations  and  orders of  any governmental  authority. Further,  the Acquired
Company  and  the  Subsidiaries  are  not  presently  charged  with,  or   under
governmental  investigation with respect to, any  actual or alleged violation of
any statute, ordinance,  rule or  regulation, or  presently the  subject of  any
pending  or,  to  the  knowledge of  the  Acquired  Company,  threatened adverse
proceeding by any regulatory authority having jurisdiction over their respective
businesses, properties or operations. Neither the execution and delivery of this
Agreement nor  the consummation  of the  transactions contemplated  hereby  will
result in the termination of any such license, certificate, permit, franchise or
right  held by the Acquired Company or  any Subsidiary, the termination of which
would have  a Material  Adverse  Effect, and  all such  licenses,  certificates,
permits,  franchises  and rights  will  inure to  the  benefit of  the Surviving
Corporation after  the consummation  of the  transactions contemplated  by  this
Agreement.
 
    3.12   CONTRACTS, AGREEMENTS AND INSTRUMENTS GENERALLY.  EXHIBIT 3.12 hereto
consists of a true and complete  list of all contracts, agreements,  commitments
and other instruments (whether oral or written) to which the Acquired Company or
any  Subsidiary is a party that involve  the receipt of recurring revenues or an
expenditure by the Acquired Company or any Subsidiary or require the performance
of services  or delivery  of goods  to, by,  through, on  behalf of  or for  the
benefit of the Acquired Company or any Subsidiary, which in each case relates to
a  contract,  agreement,  commitment  or instrument  that  requires  payments or
results in recurring revenues in excess  of $60,000 per year. EXHIBIT 3.12  also
identifies  (by parties and, in  the case of Customer  Contracts, by revenues or
expenditures and expiration dates) (whether oral or written) all:
 
    3.12.1.  contracts, agreements, commitments  or other instruments in  effect
with  any customer of the Acquired  Company or any Subsidiary, including without
limitation all consulting  services agreements, software  license agreements  or
other   licenses,  software  development  agreements,  purchase  commitments  or
installation agreements and maintenance or  service agreements, if any, in  each
case  that  result in  recurring revenues  in  excess of  $60,000 per  year, and
including all CS3000 agreements, whether or not involving recurring revenues  in
excess  of $60,000 per year (hereinafter referred to as the "Customer Contracts"
and identified as such on EXHIBIT 3.12);
 
    3.12.2.   leases,  rental  agreements  or  other  contracts  or  commitments
affecting  the ownership or leasing of, title to  or use of any interest in real
or personal property with payments equal to or greater than $5,000 per month and
all maintenance or service agreements relating to any real or personal  property
with payments equal to or greater than $5,000 per month;
 
                                      A-18
<PAGE>
    3.12.3.   contracts  or commitments providing  for payments  by the Acquired
Company or  any  Subsidiary based  in  any  manner upon  the  sales,  purchases,
receipts, income or profits of the Acquired Company or any Subsidiary;
 
    3.12.4.   franchise  agreements, marketing agreements  or royalty agreements
that require payments or  result in recurring revenues  in excess of $5,000  per
month  (and with  respect to  each such  agreement, EXHIBIT  3.12 sets  forth or
describes the aggregate royalties or similar payment paid or payable  thereunder
by the Acquired Company or any Subsidiary as of the date hereof);
 
    3.12.5.   employment contracts or  commitments (including without limitation
any standard form contracts such as employee nondisclosure agreements), and  any
other  contracts, plans or  commitments providing for  any continuing payment of
any type or nature, including,  without limitation, any severance,  termination,
parachute, or other payments (whether due to a change in control, termination or
otherwise)  and bonuses  and vested  commissions. EXHIBIT  3.12 also  includes a
listing of  all  such  agreements, if  any,  for  which the  standard  form  was
materially or substantially modified or materially or substantially altered, and
any  contracts that are not  in the standard form.  Other than the standard form
agreements listed on  EXHIBIT 3.12,  those listed variations  from the  standard
form  agreements and those listed agreements that  are not in the standard form,
there are no other agreements of the type referred to in this Section 3.12.5;
 
    3.12.6.  contracts, agreements,  understandings or arrangements  restricting
the Acquired Company or any Subsidiary from carrying on its business anywhere in
the world;
 
    3.12.7.   instruments or arrangements  evidencing or related to indebtedness
for money borrowed or to be borrowed, whether directly or indirectly, by way  of
purchase-money    obligation,   guaranty,   subordination,   conditional   sale,
lease-purchase or  otherwise providing  for  payments in  excess of  $5,000  per
month;
 
    3.12.8.   joint product development agreement  with any party other than the
Purchaser, other than Customer Contracts; and
 
    3.12.9.    contracts  or  agreements  with  vendors  of  material  equipment
purchased  by  the Acquired  Company  or appointing  the  Acquired Company  as a
reseller of equipment,  other than  purchase orders  in the  ordinary course  of
business.
 
    The  contracts,  agreements,  commitments and  other  instruments  listed or
required to be listed  on EXHIBIT 3.12  or listed on an  Exhibit referred to  in
Section 3.14 hereof are herein referred to as the "Material Contracts."
 
    All  the Material Contracts are valid  and binding upon the Acquired Company
or the applicable Subsidiary and the other parties thereto and are in full force
and  effect  and  enforceable  in   accordance  with  their  terms,  except   as
enforceability  may be affected by bankruptcy, insolvency, moratorium or similar
laws affecting  creditors  rights generally  and  general principles  of  equity
relating  to the availability of equitable remedies. Except as listed on EXHIBIT
3.12, none  of the  Acquired  Company, the  applicable  Subsidiary and,  to  the
knowledge  of  the  Acquired Company,  any  other  party to  any  such contract,
commitment or arrangement has breached any provision of, or is in default under,
the terms thereof; and, except as listed on EXHIBIT 3.12, there are no  existing
facts  or circumstances that would  prevent the work in  process of the Acquired
Company or any Subsidiary or their  contracts and agreements from maturing  upon
performance  by the Acquired Company or  the applicable Subsidiary into accounts
receivable collectible in the  aggregate in amounts  consistent in all  material
respects  with historical experience. Except as set forth on EXHIBIT 3.12, there
are no contracts  or commitments  that require  the performance  of services  or
provision  of goods by the Acquired Company at a direct cost or with a value for
each such contract or commitment in excess of the revenue to be derived pursuant
to the  terms of  such contract  or commitment.  Except for  terms  specifically
described  in EXHIBIT 3.12, neither the  Acquired Company nor any Subsidiary has
received any payment from any
 
                                      A-19
<PAGE>
contracting party in connection with or  as an inducement for entering into  any
contract, agreement, policy or instrument except for payment for actual services
rendered  or to  be rendered by  such Acquired Company  or Subsidiary consistent
with amount historically charged for such services.
 
    3.13  CUSTOMER CONTRACTS.  A substantial majority of the Customer  Contracts
entered  into within the prior two (2) years conform substantially to one of the
forms attached hereto as EXHIBIT 3.13(A) (the "Customer Contract Forms"). Except
as described on EXHIBIT 3.12 under the heading "Known Contract Defaults" and  on
Attachment  A  to  EXHIBIT  3.13(B), with  respect  to  each  Specified Customer
Contract, (i) each customer to which  computer software represented as owned  by
or  proprietary to the  Acquired Company or a  Subsidiary (the "Owned Software")
has been licensed pursuant to such  Specified Customer Contract and tendered  or
certified as operational by the Acquired Company or any Subsidiary (whichever is
the  case being referred to  in this Section 3.13  as the "Vendor") has accepted
such software to the extent and on the terms and conditions provided for in such
Specified Customer Contract; (ii) in each  case in which the Specified  Customer
Contract  pursuant to which Owned  Software is licensed incorporates response(s)
by Vendor to a Request for Proposal  by the customer, such software has met  all
material  requirements set forth in such  response(s); and (iii) all performance
warranties with respect to  Owned Software made by  the Vendor in any  Specified
Customer  Contract, including warranties with respect to capacity, availability,
downtime and response time,  have been satisfied in  all material respects  upon
the  terms  and conditions  and to  the  extent provided  for in  such Specified
Customer Contract. Except  as noted on  EXHIBIT 3.13(B), none  of the  Specified
Customer Contracts contains any of the following terms:
 
    3.13.1.  any term for acceptance of any Owned Software that fails to specify
a period of time or date for acceptance or standards applicable thereto;
 
    3.13.2.   any provision granting the customer  a right to a whole or partial
refund of fees previously paid upon  the non-acceptance or failure of any  Owned
Software to perform as warranted;
 
    3.13.3.  any provision obligating the Vendor to indemnify a customer against
consequential damages;
 
    3.13.4.   any  commitment by  the Vendor  to provide  a hardware  upgrade in
response to or as  a remedy for a  breach of any software-related  response-time
warranty  unless the customer party to  the Specified Customer Contract in which
the commitment is  made is required  to pay the  cost of such  upgrade and  such
costs are specified or described in such contract;
 
    3.13.5.    any  material deviation  from  the provisions  in  the applicable
standard contract regarding confidentiality of the Owned Software;
 
    3.13.6.  any provision granting an ownership interest (other than a license)
in any Owned Software to a customer;
 
    3.13.7.  any  license for  use by  more than a  single entity  of any  Owned
Software  unless the  customer that  is a  party to  such Customer  Contract has
agreed to pay a fee or fees with respect to each entity's use thereof;
 
    3.13.8.  any  provision naming a  customer as  an insured on  any policy  of
insurance owned by the Vendor;
 
    3.13.9.  any joint product development agreement with any other party;
 
    3.13.10.   any commitment or warranty made  or given by the Vendor to design
or modify any Owned Software so as to comply with any governmental regulations;
 
    3.13.11.  any restrictions in any Specified Customer Contract on the ability
of the  Vendor  to increase  the  fees for  maintenance  of any  Owned  Software
applicable  to any  period beyond the  period specified in  such contract during
which the  customer  that is  a  party to  such  contract is  obligated  to  pay
maintenance fees;
 
                                      A-20
<PAGE>
    3.13.12.  any commitment by the Vendor to sell computer hardware;
 
    3.13.13.   any  commitment by  the Vendor  to provide  emergency back-up for
either software or hardware; or
 
    3.13.14.   any  commitment  by  the Vendor  to  provide  existing  customers
products  developed in the future as a credit to existing payment obligations or
for less than normal prices.
 
    As  used  herein  "Specified   Customer  Contracts"  means  all   contracts,
agreements,commitments or other instruments listed on EXHIBIT 3.13(C).
 
    3.14  INTELLECTUAL PROPERTY; COMPUTER SOFTWARE.
 
    3.14.1.  EXHIBIT 3.14.1 hereto sets forth (i) a complete and correct list of
all  registered trademarks, trade names, service marks, service names, and brand
names; all material unregistered trademarks, trade names, service marks, service
names  and  brand  names;  all  patents  and  registered  copyrights;  and   all
applications  for the foregoing, if any,  (setting forth the registration, issue
or serial number of  the same and  a description of the  same) applicable to  or
used in the businesses of, and owned by, the Acquired Company or any Subsidiary;
and (ii) the owner of such intellectual property and any registration thereof or
application  therefor.  Except  pursuant to  Customer  Contracts  and agreements
between the  Acquired Company  and  a Subsidiary  with remarketers,  dealers  or
distributors  of the products of the Acquired Company or a Subsidiary identified
on EXHIBIT 3.12,  or pursuant  to other  customer contracts  or agreements  with
remarketers,  dealers or distributors that would have been required to be listed
in EXHIBIT 3.12 but for the recurring revenues with respect to the same, neither
the Acquired  Company nor  any  Subsidiary has  granted  any licenses  to  third
parties  of any of  the foregoing. Except  as noted on  EXHIBIT 3.14.1, all such
trademarks, trade names, service marks,  service names, brand names,  copyrights
and  patents are owned by the Acquired Company or a Subsidiary free and clear of
all liens and security interests. Except as set forth on EXHIBIT 3.14.1, neither
the Acquired Company nor any Subsidiary is currently in receipt of any notice of
any violation  of,  and neither  the  Acquired  Company nor  any  Subsidiary  is
violating  in any respect that would have  a Material Adverse Effect, the rights
of others in any trademark, trade  name, service mark, copyright, patent,  trade
secret, know-how or other intangible asset.
 
    3.14.2.(i)   EXHIBIT 3.14.2(I) contains a  complete and accurate list of all
Owned Software, other than immaterial Owned Software, which list specifies which
of the Acquired Company and the Subsidiaries is the owner thereof. Except as set
forth on EXHIBIT 3.14.2(I), the Acquired Company or one of the Subsidiaries  has
title  to the Owned Software, free and  clear of all claims, including claims or
rights of  employees, agents,  consultants, inventors,  customers, licensees  or
other  parties involved  in the  development, creation,  marketing, maintenance,
enhancement or licensing  of such  computer software, except  claims that  would
have not a Material Adverse Effect. Except as set forth on EXHIBIT 3.14.2(I) and
except  for commercially available, over-the-counter "shrink-wrap" software, the
Owned Software utilized for the CS3000 product is not dependent on any  Licensed
Software  (as defined in subsection (ii) below) in order to operate fully in the
manner in  which  it  is intended.  No  Owned  Software has  been  published  or
disclosed to any other parties except pursuant to contracts requiring such other
parties   to  keep  the  Owned  Software  confidential  and  except  where  such
disclosures were  both  incidental  and  immaterial. To  the  knowledge  of  the
Acquired  Company,  no such  other  party has  breached  any such  obligation of
confidentiality.
 
    3.14.2(ii)  EXHIBIT 3.14.2(II) contains a complete and accurate list of  all
software  (other  than  commercially  available  over-the-counter  "shrink-wrap"
software and immaterial Licensed Software)  under which the Acquired Company  or
any  Subsidiary is a licensee, lessee or otherwise has obtained the right to use
(the "Licensed Software").  Except as  disclosed on EXHIBIT  3.12, the  Acquired
Company  and each of the Subsidiaries are in compliance in all material respects
with all  applicable  provisions  of  such agreements,  and  such  instances  of
non-compliance  disclosed on  EXHIBIT 3.12 would  not, in the  aggregate, have a
Material Adverse Effect. Except as disclosed on EXHIBIT 3.14.2(II), none of  the
Licensed  Software  has been  incorporated  into or  made  a part  of  any Owned
Software or any other
 
                                      A-21
<PAGE>
Licensed Software  by the  Acquired Company  or Subsidiary.  EXHIBIT  3.14.2(II)
states  with  respect  to  any  items  disclosed  thereon  the  duration  of the
applicable  license.  Neither  the  Acquired  Company  nor  any  Subsidiary  has
published  or  disclosed any  Licensed  Software to  any  other party  except in
accordance with and  as permitted  by any  license, lease  or similar  agreement
relating  to the Licensed Software.  No party to whom  the Acquired Company or a
Subsidiary has disclosed Licensed Software has, to the knowledge of the Acquired
Company, breached  any obligation  of  confidentiality imposed  on them  by  the
Acquired Company or a Subsidiary relating thereto.
 
    3.14.2(iii)    The Owned  Software  and Licensed  Software  and commercially
available over-the-counter "shrink-wrap" software  constitute all software  used
in  the businesses of  the Acquired Company  and the Subsidiaries (collectively,
the "Acquired  Company  Software"), other  than  immaterial Owned  Software  and
immaterial  Licensed  Software. EXHIBIT  3.14.2(III) sets  forth  a list  of all
Persons that have provided the Acquired Company or any Subsidiary with  contract
programmers  (other than  employees of  the Acquired  Company or  a Subsidiary),
independent contractors and  nonemployee agents who  have performed, within  the
last  three (3) years, computer programming services for the Acquired Company or
any Subsidiary and  identifies all  contracts and agreements  pursuant to  which
such   services  were  performed.  Except  as  disclosed  on  EXHIBIT  3.8,  the
transactions contemplated herein will  not cause a breach  or default under  any
licenses, leases or similar agreements relating to the Acquired Company Software
or impair Purchaser's, the Acquired Company's or any Subsidiary's ability to use
the  Acquired Company Software in  the same manner as  such computer software is
currently used by the Acquired Company or the Subsidiaries. Neither the Acquired
Company  nor  any  Subsidiary  is   infringing  in  any  material  respect   any
intellectual  property rights of any other person  or entity with respect to the
Acquired Company Software, and, to the knowledge of the Acquired Company (ii) no
other person or  entity is infringing  any intellectual property  rights of  the
Acquired  Company  or  any  Subsidiary  with  respect  to  the  Acquired Company
Software.
 
    3.14.2(iv)   EXHIBIT  3.14.2(IV)(A)  lists  and  separately  identifies  all
agreements  pursuant to  which the Acquired  Company or any  Subsidiary has been
granted  rights  to  market  software  owned  by  third  parties,  and   EXHIBIT
3.14.2(IV)(B)  lists and separately identifies  all agreements pursuant to which
the Acquired  Company or  any Subsidiary  has granted  marketing rights  in  the
Acquired  Company  Software  ("Marketing Rights")  to  third  parties; provided,
however, that EXHIBIT  3.14.2(IV)(B) excludes all  agreements pursuant to  which
Marketing  Rights have  been granted with  respect to  Acquired Company Software
offered as  products of  the  Acquired Company  and the  Subsidiaries'  Software
Publishing  business unit,  other than  agreements pursuant  to which  the third
party to such agreement  has been granted Marketing  Rights to the exclusion  of
the Acquired Company or a Subsidiary; provided, further, that, of the agreements
pursuant  to  which  Marketing Rights  have  been  granted with  respect  to the
Acquired Company Software offered  as products of the  Acquired Company and  the
Subsidiaries'  Group Practice  business unit,  EXHIBIT 3.14.2(IV)(B)  lists only
those constituting Customer  Contracts entered  into during  the three  (3)-year
period immediately prior to the date of this Agreement.
 
    3.14.2(v)   To the knowledge  of the Acquired Company,  none of the Acquired
Company and the Subsidiaries has taken or  failed to take any actions under  the
law  of any foreign jurisdiction (other than  the United States or any political
subdivision thereof) where the Acquired Company or a Subsidiary has marketed  or
licensed  Acquired Company Software that would  materially restrict or limit the
ability of the Acquired Company or any Subsidiary to protect, or prevent it from
protecting, its ownership interests in, confidentiality rights of, and rights to
market, license, modify or enhance, the Acquired Company Software.
 
    3.15  LABOR MATTERS. Except  as set forth on  EXHIBIT 3.15, within the  last
three  (3) years neither  the Acquired Company  nor any Subsidiary  has been the
subject of any union activity or labor dispute, nor has there been any strike of
any kind called or, to the knowledge  of the Acquired Company, threatened to  be
called  against any of them. Neither the Acquired Company nor any Subsidiary has
violated in  any  material  respect  any applicable  federal  or  state  law  or
regulation relating to labor or labor practices. EXHIBIT 3.15 sets forth a true,
correct and complete list of employer loans or advances
 
                                      A-22
<PAGE>
from the Acquired Company and each Subsidiary to their respective employees. The
Acquired  Company and  all Subsidiaries  are in  compliance with  all applicable
requirements of the Immigration and Nationality  Act of 1952, as amended by  the
Immigration  Reform  and Control  Act of  1986  and the  regulations promulgated
thereunder (hereinafter  collectively referred  to as  the "Immigration  Laws"),
except for any such noncompliance that would not have a Material Adverse Effect.
 
    3.16  BENEFIT PLANS.
 
    3.16.1.    EXHIBIT  3.16 lists  every  pension,  retirement, profit-sharing,
deferred compensation, stock  option, employee stock  ownership, severance  pay,
vacation,  bonus or other  incentive plan; any medical,  vision, dental or other
health plan;  any life  insurance plan  or any  other employee  benefit plan  or
fringe   benefit  plan;  any  other   written  or  unwritten  employee  program,
arrangement, agreement or understanding; commitments or methods of  contribution
or compensation (whether arrived at through collective bargaining or otherwise),
whether  formal or  informal, whether  funded or  unfunded, and  whether legally
binding or not; including, without  limitation, any "employee benefit plan,"  as
that  term is defined in Section 3(3)  of ERISA; that is currently or previously
adopted, maintained, sponsored  in whole or  in part, or  contributed to by  the
Acquired Company or any ERISA Affiliate of the Acquired Company, for the benefit
of, providing any remuneration or benefits to, or covering any current or former
employee,  retiree, dependent, spouse  or other family  member or beneficiary of
such employee or retiree, director, independent contractor, stockholder, officer
or consultant of  the Acquired Company  or any ERISA  Affiliate of the  Acquired
Company  or under (or in connection with) which the Acquired Company or an ERISA
Affiliate of the Acquired Company has any contingent or noncontingent  liability
of  any kind, whether  or not probable of  assertion (collectively, the "Benefit
Plans"). Any of the Benefit Plans that is an "employee pension benefit plan," or
an "employee welfare benefit plan"  as that term is  defined in Section 3(1)  of
ERISA,  is referred to herein as an "ERISA Plan." No Benefit Plan is or has been
a multiemployer plan within the meaning of Section 3(37) of ERISA.
 
    3.16.2.  EXHIBIT 3.16 also lists,  with respect to all Benefit Plans  listed
in  EXHIBIT  3.16:  (a)  all trust  agreements  or  other  funding arrangements,
including insurance  contracts, all  annuity  contracts, most  recent  actuarial
statements  or  valuations  (if  such  actuarial  statements  or  valuations are
required to be prepared by applicable law), fidelity bonds, fiduciary  liability
policies,  investment manager or advisory contracts, and all amendments (if any)
thereto,  (b)  where  applicable,  with  respect  to  any  such  plans  or  plan
amendments,  the most  recent determination letters  issued by the  IRS, and (c)
where applicable,  the  most  recent summary  plan  descriptions,  any  material
modifications thereto. Contemporaneous with the delivery of the Exhibits to this
Agreement,  the Acquired Company has delivered a  true and complete copy of each
such Benefit Plan, agreement, most recent IRS letter or ruling, opinion, return,
financial statement and summary plan description described in Sections 3.16.1 or
3.16.2 hereof, together with  the annual report (Form  5500 Series) for the  two
most  recent  plan  years  for  any  Benefit  Plan  subject  to  such  reporting
requirements.
 
    3.16.3.   All the  Benefit Plans  and any  related trusts  subject to  ERISA
comply  with  and  have been  administered  in substantial  compliance  with the
provisions of  ERISA, all  applicable provisions  of the  Tax Code  relating  to
qualification  and tax  exemption under Tax  Code Sections 401(a)  and 501(a) or
otherwise necessary to secure intended tax consequences, all applicable state or
federal securities laws and  all other applicable  laws, rules and  regulations,
and  the  Acquired Company  has not  received any  notice from  any governmental
agency or  instrumentality  questioning  or  challenging  such  compliance.  Any
noncompliance  or failure properly to maintain,  operate or administer a Benefit
Plan or related trust has not rendered nor will render (i) such Benefit Plan  or
related  trust or the Parent, Purchaser or Acquired Company subject to or liable
for any  material taxes,  penalties,  or liabilities  to  any Person;  (ii)  the
Benefit  Plan subject to disqualification; or (iii) the trust subject to loss of
tax-exempt status.
 
    3.16.4.  None of the Acquired Company, any of the Subsidiaries, and, to  the
knowledge  of the Acquired  Company, any administrator or  fiduciary of any such
Benefit Plan (or agent or delegate of  any of the foregoing) has engaged in  any
transaction   or   acted  or   failed   to  act   in   any  manner   that  could
 
                                      A-23
<PAGE>
subject the Acquired Company to any  direct or indirect liability (by  indemnity
or  otherwise) for a breach  of any fiduciary, co-fiduciary  or other duty under
ERISA. To the  knowledge of the  Acquired Company, no  material oral or  written
representation  or communication with respect to any aspect of the Benefit Plans
has been or  will be  made to  employees of the  Acquired Company  prior to  the
Closing Date that is not in accordance with the written or otherwise preexisting
terms  and provisions of such  Benefit Plans in effect  immediately prior to the
Closing Date, except for any amendments or terminations required by the terms of
this Agreement.  To  the  knowledge  of  the  Acquired  Company,  there  are  no
unresolved  claims or disputes  under the terms  of, or in  connection with, the
Benefit Plans (other than routine undisputed claims for benefits).
 
    3.16.5.   All annual  reports  or returns,  audited or  unaudited  financial
statements,  actuarial  valuations,  summary  annual  reports  and  summary plan
descriptions issued with respect to the  Benefit Plans are correct and  accurate
in  all  material respects  as  of the  dates thereof;  and  there have  been no
amendments filed  to any  of such  reports, returns,  statements, valuations  or
descriptions  or required  to make  the information  therein true  and accurate.
Except as disclosed  on EXHIBIT 3.16.5,  all annual reports  (Form 5500  series)
required  to be  filed with  respect to any  Benefit Plan  have been  or will be
timely filed prior to Closing.
 
    3.16.6.   No  non-exempt "prohibited  transaction"  (within the  meaning  of
Section  4975(c) of the Tax Code) involving  any Benefit Plan has occurred. None
of the assets of any ERISA Plan is an "employer security" (within the meaning of
Section 407(d)(1) of ERISA) or "employer  real property" (within the meaning  of
Section 407(d)(2) of ERISA).
 
    3.16.7.   The  only Benefit Plan  that is  or has been  an "employee pension
benefit plan" as defined in Section 3(2) of ERISA is the 401(k) Plan. The 401(k)
Plan is qualified under Section 401(a) of the Tax Code and its related trust  is
exempt  from tax under Section 501(a) of the Tax Code and no circumstances exist
that could result in a disqualification of the 401(k) Plan or loss of tax-exempt
status for its related trust. Neither  the 401(k) Plan nor any predecessor  plan
has  ever been subject to the provisions of  Title IV of ERISA or to the minimum
funding standards of Section 412 of the Tax Code.
 
    3.16.8.   As  of  March 31,  1996,  neither  the Acquired  Company  nor  any
Subsidiary  had any current  or future liability  with respect to  any events or
matters occurring,  arising or  accruing on  or  prior to  such date  under  any
Benefit  Plan that was  not reflected in the  Interim 1996 Financial Statements,
except for any liability which would not have a Material Adverse Effect.
 
    3.16.9.  The Acquired Company does  not maintain any Benefit Plan  providing
deferred  or stock based compensation that is  not reflected in the Interim 1996
Financial Statements.
 
    3.16.10.   Neither the  Acquired  Company nor  any  ERISA Affiliate  of  the
Acquired  Company  has maintained,  and neither  now  maintains, a  Benefit Plan
providing welfare benefits (as defined in ERISA Section 3(1)) to employees after
retirement or other separation  of service except to  the extent required  under
Part 6 of Title I of ERISA and Tax Code Section 4980B.
 
    3.16.11.   Except as set  forth on EXHIBIT 3.16.11,  the consummation of the
transactions contemplated by this Agreement will not (i) entitle any current  or
former  employee  (or  any spouse,  dependent  or  other family  member  of such
employee) of the Acquired Company or  any of the Subsidiaries to severance  pay,
unemployment  compensation or any payment contingent upon a change in control or
ownership of the  Acquired Company, or  (ii) accelerate the  time of payment  or
vesting, or increase the amount, of any compensation due to any such employee or
former  employee  (or  any spouse,  dependent  or  other family  member  of such
employee).
 
    3.17  CUSTOMERS.  Except as disclosed on EXHIBIT 3.17, none of the  Acquired
Company  and the Subsidiaries has received any notice from, or has any knowledge
that, any current customer of the Acquired Company or any Subsidiary as of March
31, 1996 or any date subsequent thereto, that is a party to a Customer Contract,
has taken or will take any steps that could disrupt the business relationship of
the Acquired Company  or the  Subsidiaries with  such customer  in any  material
respect.
 
                                      A-24
<PAGE>
    3.18   ENVIRONMENTAL MATTERS.  Except as  set forth in EXHIBIT 3.18, no real
property now  or  previously  owned or  used  by  the Acquired  Company  or  any
Subsidiary  or now or previously owned or  leased by the Acquired Company or any
Subsidiary (the "Real Property")  has been used by  the Acquired Company or  any
Subsidiary or, to the knowledge of the Acquired Company, any other party for the
handling,  treatment, storage or disposal of  any Hazardous Substance. Except as
set forth in EXHIBIT 3.18, no release, discharge, spillage or disposal into  the
environment  of any Hazardous Substance and  no soil, water or air contamination
by any Hazardous Substance has occurred or is occurring in, from or on the  Real
Property  (a) by virtue of the actions or  failure to act of any of the Acquired
Company or any Subsidiary or  (b) to the knowledge  of the Acquired Company,  by
virtue  of the actions or failure to act of any other party. Except as set forth
in EXHIBIT 3.18, the Acquired Company and all Subsidiaries have complied in  all
material  respects with all reporting requirements under any applicable federal,
state or  local environmental  laws and  any permits  with respect  to the  Real
Property,  and there are no  existing violations by the  Acquired Company or any
Subsidiary of any such  environmental laws or permits  with respect to the  Real
Property.  Except as set  forth in EXHIBIT  3.18, there are  no claims, actions,
suits,  proceedings  or  investigations   related  to  the  presence,   release,
production,  handling, discharge,  spillage, transportation  or disposal  of any
Hazardous Substance or ambient air conditions or contamination of soil, water or
air by any  Hazardous Substance pending  or threatened (1)  with respect to  the
Real  Property (a) by  virtue of the actions  or failure to  act of the Acquired
Company or any Subsidiary or  (b) to the knowledge  of the Acquired Company,  by
virtue  of the actions  or failure to act  of any other  party, or (2) otherwise
against the  Acquired Company  or any  Subsidiary, in  any court  or before  any
state, federal or other governmental agency or private arbitration tribunal and,
to  the knowledge of the Acquired Company, there is no basis for any such claim,
action, suit, proceeding or investigation (i) with respect to the Real  Property
(a)  by virtue of the actions  or failure to act of  the Acquired Company or any
Subsidiary or (b) to  the knowledge of  the Acquired Company,  by virtue of  the
actions  or failure  to act of  any other  party, or (ii)  otherwise against the
Acquired Company or any Subsidiary. Except as disclosed on EXHIBIT 3.18, to  the
knowledge  of the Acquired  Company or any Subsidiary,  there are no underground
storage tanks on the Real Property. To the knowledge of the Acquired Company, no
building or other improvement included in the Real Property contains any exposed
or friable asbestos currently required to be removed or otherwise treated  under
applicable  law. For the purposes of this Agreement, "Hazardous Substance" shall
mean any hazardous or toxic substance or hazardous or toxic waste as those terms
are  defined  by  any  applicable  federal,  state  or  local  law,   ordinance,
regulation,  judgment, decision, order or decree, including, without limitation,
the Comprehensive  Environmental Recovery  Compensation  and Liability  Act,  42
U.S.C.  9601 ET SEQ., the Hazardous Materials Transportation Act, 49 U.S.C. 1801
ET. SEQ. and the Resource Conservation and Recovery Act, 42 U.S.C. 6901 ET SEQ.,
and petroleum, petroleum products  and oil. The  environmental condition of  the
property  located at  520 CyCare  Plaza, Dubuque,  Iowa has  not changed  in any
material respect from the condition thereof  as described in the Phase I  Report
(as defined on EXHIBIT 3.18).
 
    3.19   INSURANCE.   Set  forth in  EXHIBIT 3.19  is a  complete list  of all
material insurance  policies  that the  Acquired  Company and  the  Subsidiaries
maintain  with respect to  their respective businesses,  properties or employees
within the preceding  thirty-six (36)  months. Except  as set  forth in  EXHIBIT
3.19,  such policies are in  full force and effect and,  to the knowledge of the
Acquired Company, no event has occurred that would give any insurance carrier  a
right to terminate any such policy. Such policies are adequate to insure against
risks  to which the Acquired Company,  and any Subsidiaries and their respective
properties  and  assets  are  exposed  in  the  operation  of  their  respective
businesses  in such amounts and types of coverage as are commercially reasonable
and are consistent with practices in the industry in which the Acquired  Company
and  the Subsidiaries operate. Except as set  forth in EXHIBIT 3.19, since March
31, 1996, there has not been any change in the premiums payable pursuant to such
policies.
 
    3.20  RELATED PARTY RELATIONSHIPS.  Except as set forth in EXHIBIT 3.20,  to
the  knowledge of  the Acquired  Company, no  stockholder owning  greater than a
five-percent (5%) interest in  the Acquired Company, no  affiliate or member  of
the   immediate   family   of  any   such   stockholder,  and   no   officer  or
 
                                      A-25
<PAGE>
director or member of the  immediate family of such  officer or director of  the
Acquired  Company  or  any  Subsidiary possesses,  directly  or  indirectly, any
beneficial interest in, or is a director,  officer or employee of, or member  of
the  immediate family  of a director,  officer or employee  of, any corporation,
partnership, firm,  association  or  business organization  that  is  a  client,
supplier,  customer,  lessor,  lessee,  lender,  creditor,  borrower,  debtor or
contracting party with or of the Acquired Company or any Subsidiary (except as a
stockholder holding less than a one-percent  1% interest in a corporation  whose
shares  are  traded on  a national  or  regional securities  exchange or  in the
over-the-counter market).
 
    3.21  INFORMATION.  The Acquired Company has made accessible to Purchaser or
Parent  each  registration  statement,  schedule,  report,  proxy  statement  or
information  statement  it  has  filed  with  the  SEC  since  January  1, 1994,
including, without limitation, (a) the Acquired Company's Annual Reports on Form
10-K for the years ended December 31, 1993, December 31, 1994, and December  31,
1995,  including all documents incorporated  therein, (b) the Acquired Company's
Quarterly Report on  Form 10-Q for  the quarter  ended March 31,  1996, (c)  the
Acquired  Company's Proxy Statement dated March 29,  1996 and (d) all Reports of
Acquired Company  on  Form  8-K  since  December  31,  1995  (collectively,  the
"Acquired  Company Reports").  As of  the date  of this  Agreement, the Acquired
Company Reports did not contain any untrue statement of a material fact or  omit
to  state a material fact required to be stated therein or necessary to make the
statements made therein, in light of the circumstances in which they were  made,
not  misleading. As used in this Section  3.21, "material" means material to the
financial condition, business, properties, rights or operations of the  Acquired
Company together with the Subsidiaries, taken as a whole.
 
    3.22   POOLING OF INTERESTS.  The Acquired Company is not aware of any facts
or circumstances in respect of it or its accounting procedures which would  have
the  effect of precluding accounting for the transactions contemplated hereby as
a "pooling of interests."
 
    3.23   DISCLOSURE AND  ABSENCE  OF UNDISCLOSED  LIABILITIES.   No  statement
contained  herein  or  in  any certificate,  schedule,  list,  exhibit  or other
instrument furnished or required  to be furnished to  Purchaser pursuant to  the
provisions  hereof contains,  or will  at the time  it is  finished contain, any
untrue statement of any  material fact or  omits or omit  to state any  material
fact necessary to make the Statements herein or therein not false or misleading.
As  used in this Section, "material"  means material to the financial condition,
business, properties,  rights or  operations  of the  Acquired Company  and  its
Subsidiaries, taken as a whole.
 
    3.24   NO SPECIAL STOCKHOLDER RIGHTS.   Except as disclosed on EXHIBIT 3.24,
the Acquired Company has no agreement with any individual or entity that  grants
such  person any rights as  a stockholder of Acquired  Company Stock that are in
addition to such  holder's rights  under the Acquired  Company's Certificate  of
Incorporation  or  Bylaws (including,  without limitation,  registration rights,
preemptive  rights,  put  rights,   rights  of  co-sale   or  rights  to   Board
representation).
 
IV.  REPRESENTATIONS AND WARRANTIES OF PURCHASER AND PARENT.
 
    Purchaser  and Parent, jointly  and severally, represent  and warrant to the
Acquired Company as follows:
 
    4.1  ORGANIZATION AND STANDING.
 
    4.1.1.  Each of the Purchaser, the  Parent and the Parent Subsidiaries is  a
corporation duly organized, validly existing and in good standing under the laws
of  the  respective  jurisdiction of  its  incorporation and  has  the requisite
corporate power and authority to carry on  its business in the places and as  it
is  now being conducted and  to own and lease the  properties and assets that it
now owns or leases.
 
    4.1.2.  Each  of the Purchaser,  the Parent and  the Parent Subsidiaries  is
duly  qualified and/or licensed to  transact business and in  good standing as a
foreign corporation in jurisdictions where  the character of the property  owned
or   leased  by   the  Purchaser,  the   Parent  and   the  Parent  Subsidiaries
 
                                      A-26
<PAGE>
and the nature  of the business  conducted by them  requires such  qualification
and/or  licensing,  except where  the failure  to  so qualify  would not  have a
Material  Adverse  Effect  upon  the  Purchaser,  the  Parent  and  the   Parent
Subsidiaries, taken as a whole.
 
    4.2   CORPORATE POWER AND  AUTHORITY.  Each of  Purchaser and Parent has the
capacity and  authority  to  execute  and deliver  this  Agreement,  to  perform
hereunder  and to  consummate the  transactions contemplated  hereby without the
necessity of any act or consent  of any other Person whomsoever. The  execution,
delivery  and performance by Purchaser and Parent of this Agreement and each and
every agreement,  document and  instrument provided  for herein  have been  duly
authorized  and approved by  their respective Boards  of Directors (or Executive
Committees  thereof).  Assuming  this  Agreement,  and  each  and  every   other
agreement,  document and instrument  to be executed,  delivered and performed by
Purchaser and Parent in connection herewith are valid and legally binding on the
Acquired Company, this Agreement, and  each and every other agreement,  document
and  instrument to be executed, delivered  and performed by Purchaser and Parent
in connection  herewith,  constitute  or  will,  when  executed  and  delivered,
constitute  the valid and legally binding obligations of Purchaser and Parent as
applicable, enforceable against each of them in accordance with their respective
terms,  except  as  enforceability  may  be  limited  by  applicable   equitable
principles, or by bankruptcy, insolvency, reorganization, moratorium, or similar
laws  from time to time in effect affecting the enforcement of creditors' rights
generally. The Parent has  provided to counsel for  Acquired Company a true  and
correct copy of the Certificate of Incorporation and Bylaws, each as amended, of
the Parent and Purchaser.
 
    4.3   CAPITALIZATION.   The  entire authorized  capital stock  of the Parent
consist of two hundred fifty one million (251,000,000) shares of stock, of which
two hundred fifty million (250,000,000) shares are designated Common Stock,  par
value  $.05  per  share,  and  one  million  (1,000,000)  shares  are designated
preferred Stock, without par value. Of the total authorized Common Stock, as  of
April  30,  1996,  approximately  40,386,274  were  issued  and  outstanding and
approximately 16,210,676 shares were held in the Parent's treasury. Of the total
authorized Preferred Stock, no  shares have been issued.  As of April 30,  1996,
there were options outstanding entitling the optionees thereunder, to acquire in
the  aggregate approximately 2,650,960 shares of  Parent Stock. On May 14, 1996,
the Board of  Directors of the  Parent authorized a  stock split by  means of  a
stock  dividend providing for the issuance of one share of Parent Stock for each
outstanding share of Parent Stock, with such  dividend to be issued on June  10,
1996  to stockholders of record  on May 27, 1996; and  none of the share amounts
provided in this Section 4.3 or  elsewhere in this Agreement have been  adjusted
for  such stock  split. All  the issued  and outstanding  shares of  each of the
Parent Subsidiaries are  owned directly  or indirectly  by the  Parent free  and
clear  of all liens, claims, charges  and encumbrances of any nature whatsoever.
All of the outstanding shares of Parent Stock (and any shares issued pursuant to
presently outstanding  options, if  exercised and  purchased at  the  applicable
exercise  price) were  duly authorized  (or will be  when issued  and the option
price paid), validly issues, fully paid  and nonassessable. None of the  capital
stock  of  the  Parent is  entitled  to  or subject  to  preemptive  rights. The
authorization or consent of no  other person or entity  is required in order  to
consummate  the transaction contemplated herein by  virtue of any such person or
entity having  an  equitable  or  beneficial  interest  in  the  Parent  or  any
Subsidiary.
 
    4.4    AGREEMENT DOES  NOT  VIOLATE OTHER  INSTRUMENTS.   The  execution and
delivery of this Agreement by Purchaser and Parent do not, and the  consummation
of  the transactions contemplated hereby will not, violate any provisions of the
Certificate of Incorporation, as amended,  or Bylaws, as amended, of  Purchaser,
Parent  or of any Parent Subsidiary, or,  violate or constitute an occurrence of
default under any provision of, or conflict with, result in acceleration of  any
obligation  under,  or  give rise  to  a right  by  any party  to  terminate its
obligations under, any mortgage, deed of trust, conveyance to secure debt, note,
loan, lien,  lease, agreement,  instrument, or  any order,  judgment, decree  or
other arrangement to which Purchaser, Parent or any Parent Subsidiary is a party
or  is bound or by which any of their respective assets are affected. Except for
the applicable requirements of the HSR Act, the
 
                                      A-27
<PAGE>
1933 Act, the Exchange Act, and applicable Blue Sky laws, no consent,  approval,
order  or authorization  of, or  registration, declaration  or filing  with, any
governmental entity is required  to be obtained  or made by  or with respect  to
Purchaser,  Parent  or  any  Parent Subsidiary,  or  any  assets,  properties or
operations of Purchaser or Parent in connection with the execution and  delivery
by   Purchaser  and  Parent  of  this  Agreement  or  the  consummation  of  the
transactions contemplated hereby.
 
    4.5   RESERVATION  OF SHARES.    Purchaser will,  prior  to the  Merger,  in
accordance  with  the  terms  thereof, have  available  shares  of  Parent Stock
sufficient to  complete  the Merger.  The  shares  of the  Parent  Stock  issued
pursuant  to Article II  will, when issued, be  duly authorized, validly issued,
fully paid and  nonassessable and  no stockholder of  the Parent  will have  any
preemptive rights of subscription or purchase in respect thereof.
 
    4.6   INFORMATION.  Parent  has made available to  the Acquired Company each
registration  statement,  schedule,  report,  proxy  statement  or   information
statement  it has filed with  the SEC since January  1, 1994, including, without
limitation, (a) Parent's Annual Report on Form 10-K for the years ended December
31,  1994,  and  December  31,  1995,  respectively,  including  all   documents
incorporated therein, (b) Parent's Quarterly Report on Form 10-Q for the quarter
ended  March 31, 1996 and  (c) Reports of Parent on  Form 8-K since December 31,
1995 (collectively, the "Parent Reports"). As of the date of this Agreement, the
Parent Reports, taken together with  information previously furnished by  Parent
to the Acquired Company, did not contain any untrue statement of a material fact
or  omit to state a material fact required  to be stated therein or necessary to
make the statements made  therein, in light of  the circumstances in which  they
were made, not misleading. As used in this Section, "material" means material to
the  financial condition, results of  operations, business, assets or properties
of Parent together with the Parent Subsidiaries (including Purchaser), taken  as
a whole.
 
V.  CONDITIONS PRECEDENT TO RESPECTIVE OBLIGATIONS OF THE PARTIES.
 
    The  obligations  of Purchaser  and  Parent, on  the  one hand,  and  of the
Acquired Company, on the other hand, to consummate, or cause to be  consummated,
the  Merger shall  be contingent  upon and  subject to  the satisfaction,  on or
before the Closing, of each and every  one of the following conditions, any  one
or more of which may be waived in writing by such parties.
 
    5.1    ACTIONS  OF GOVERNMENTAL  AUTHORITIES.    There shall  not  have been
instituted  or  be  pending  any  action,  proceeding,  application,  claim   or
counterclaim  by any government or governmental authority or agency, domestic or
foreign, and  Purchaser, Parent  or the  Acquired Company  shall not  have  been
notified  by  any  such  government,  governmental  authority  or  agency  (or a
representative thereof) of its present  intention to commence, or recommend  the
commencement  of,  such  an  action  or  proceeding,  that  (i)  challenges  the
acquisition by Purchaser or Parent of  the Acquired Company Stock, restrains  or
prohibits  or seeks to  restrain or prohibit  the making or  consummation of the
Merger  or  restrains  or  prohibits  or  seeks  to  restrain  or  prohibit  the
performance  of this Agreement; (ii) prohibits or limits or seeks to prohibit or
limit the  ownership  or  operation  by  Purchaser  or  Parent  of  all  or  any
substantial  portion of the business or assets of the Acquired Company or any of
the Subsidiaries or of Purchaser, Parent or any of their respective subsidiaries
or compels or  seeks to  compel Purchaser  or Parent to  dispose of  or to  hold
separate  all  or any  substantial  portion of  the  business or  assets  of the
Acquired Company or any of  the Subsidiaries or of  Purchaser, Parent or any  of
their  respective  subsidiaries,  or imposes  or  seeks to  impose  any material
limitation on the ability of Purchaser or Parent to conduct such business or  to
own  such assets; or (iii) imposes or seeks to impose limitations on the ability
of Purchaser or Parent (or any other affiliate of Purchaser) to acquire or  hold
or to exercise full rights of ownership of the Surviving Corporation, including,
but  not  limited to,  the right  to vote  such shares  on all  matters properly
presented to the stockholders of the Surviving Corporation.
 
    5.2  OTHER  LEGAL ACTIONS.   There shall  not have been  any statute,  rule,
regulation,  order  or  injunction enacted,  promulgated,  entered,  enforced or
deemed  applicable  to  the  Merger   or  this  Agreement  by  any   government,
governmental  authority or agency or court, domestic or foreign, and no claim or
action for  such  shall have  been  instituted  before a  court,  government  or
governmental
 
                                      A-28
<PAGE>
authority  or agency, and such shall not have been proposed before a legislative
or regulatory body, that could  be reasonably expected to  result in any of  the
consequences referred to in clauses (i) through (iii) of Section 5.1 above.
 
    5.3   LEGAL APPROVALS.  The execution and the delivery of this Agreement and
the consummation  of  the  transactions  contemplated  hereby  shall  have  been
approved  by all regulatory authorities whose  approvals are required by law and
the waiting period under the HSR Act shall have expired or have been terminated.
 
    5.4  STOCKHOLDER APPROVAL.   This Agreement and  the Merger shall have  been
adopted  and approved by the affirmative vote  or written consent of the holders
of the  outstanding shares  of Acquired  Company Stock  by the  vote or  written
consent required by, and in accordance with, the Delaware Code.
 
    5.5   EFFECTIVENESS OF  REGISTRATION STATEMENT.   The Registration Statement
shall have been declared  effective by the  SEC at the  Effective Time, no  stop
order  suspending effectiveness  shall have  been issued,  and no  action, suit,
proceeding or  investigation by  the SEC  to suspend  the effectiveness  thereof
shall  have been initiated and  be continuing. The shares  of Parent Stock to be
issued or sold pursuant to the Registration Statement shall have been registered
for issuance in the Merger under all applicable Blue Sky laws or shall be exempt
from such registration, and no stop order shall have been issued with respect to
the issuance or sale of such securities by any Blue Sky authority.
 
    5.6  NASDAQ APPROVAL.   The Parent Stock issuable  in the merger shall  have
been  listed or  approved for  listing upon notice  of issuance  by NASDAQ Stock
Market National Market.
 
    5.7  FAIRNESS OPINION.  The Acquired Company shall have received an  opinion
dated  as  of the  date of  the mailing  of the  proxy statement  and prospectus
included within the Registration Statement  to the stockholders of the  Acquired
Company  from Broadview Associates, L.P.,  its financial advisor, confirming the
opinion referred to in Section 3.2.3 hereof.
 
VI.  FURTHER CONDITIONS PRECEDENT TO OBLIGATIONS OF PURCHASER AND PARENT.
 
    In addition  to  the  conditions set  forth  in  Article V  above,  all  the
obligations  of Purchaser and Parent to  consummate, or cause to be consummated,
the Merger  shall be  contingent upon  and subject  to the  satisfaction, on  or
before  the Closing,  of each  and every  one of  the following  conditions. The
following conditions are for the sole benefit of Purchaser and Parent and may be
asserted by Purchaser or Parent regardless  of the circumstances giving rise  to
any  such condition and may be waived by Purchaser or Parent (which action shall
be deemed a waiver by  both Purchaser and Parent), in  whole or in part, at  any
time  and from time to time, in the  sole discretion of Purchaser or Parent. The
failure by  either Purchaser  or  Parent at  any time  to  exercise any  of  the
foregoing rights shall not be deemed a waiver of any other right, and each right
shall  be deemed an ongoing right that may be asserted at any time and from time
to time.
 
    6.1    REPRESENTATIONS  OF  ACQUIRED  COMPANY.    All  representations   and
warranties  of  the  Acquired  Company  contained  in  this  Agreement,  in  the
statements contained in the Exhibits hereto  or in any certificate delivered  by
the  Acquired Company pursuant to this Agreement  shall be true and correct when
made, and shall be true and correct at and as of the Closing Date as though such
representations and warranties were made or given on and as of the Closing Date,
in each case (i) as if none of such representations and warranties contained any
qualifications as to materiality or the absence of Material Adverse Effect,  and
(ii)  except  for changes  arising in  connection with  or contemplated  by this
Agreement; PROVIDED HOWEVER, that notwithstanding the foregoing, this  condition
shall  be deemed  to be  satisfied if all  breaches of  such representations and
warranties,  after  giving  effect  to  clauses  (i)  and  (ii)  above,  do  not
cumulatively  constitute, or  cumulatively could  not reasonably  be expected to
have, a Material Adverse Effect.
 
                                      A-29
<PAGE>
    6.2  COVENANTS  OF ACQUIRED COMPANY.   The Acquired  Company shall have,  or
caused  to be, performed and observed  in all respects all covenants, agreements
and conditions hereto to be performed or observed at or before the Closing Date.
 
    6.3  NO MATERIAL  ADVERSE CHANGE.   Since the date  of this Agreement  there
shall not have been any change in the business, properties, rights or operations
of  the Acquired Company or its Subsidiaries, taken as a whole, which constitute
a Material Adverse Effect on the Acquired Company and the Subsidiaries.
 
    6.4   CERTIFICATE.   Purchaser  shall have  received  a certificate  of  the
President  of the Acquired Company, dated as  of the Closing Date, certifying as
to the matters set forth in Sections 6.1 through 6.3 above.
 
    6.5  OPINION OF ACQUIRED COMPANY'S COUNSEL.  Purchaser and Parent shall have
received an opinion of Snell & Wilmer L.L.P., counsel for the Acquired  Company,
dated as of the Closing Date substantially in the form set forth in EXHIBIT 6.5.
 
    6.6   TAX OPINION.  Purchaser and Parent shall each have received an opinion
from their counsel  based upon  appropriate representations of  the parties  and
certain  stockholders of the Acquired Company, dated  as of the Closing Date, to
the effect that the Merger will qualify as a reorganization pursuant to  Section
368(a) of the Tax Code.
 
    6.7  AFFILIATES AND PRINCIPAL STOCKHOLDERS.  Purchaser and Parent shall have
received  the Rule 145 Letters  and the Pooling Letters  from the persons and at
the times  specified in  Section  2.4, and  the  letters referenced  in  Section
2.13.2.
 
    6.8   ADDITIONAL INSTRUMENTS; CERTAIN CONSENTS.   The Acquired Company shall
have delivered  to Purchaser  or  Parent certified  copies of  resolutions  duly
adopted by the Acquired Company's Board of Directors and stockholders, approving
the  Merger and authorizing the transactions contemplated hereby, and such other
or additional instruments,  endorsements and documents  as Parent and  Purchaser
reasonably  deem  to be  necessary to  enable  the Merger  to be  consummated as
provided in this Agreement. Subject to the last three sentences of this  Section
6.8,  the Acquired  Company shall  have received  the (i)  waivers, consents and
approvals to the transactions contemplated  herein, which are listed on  EXHIBIT
6.8(A),  each  in  form  and substance  reasonably  satisfactory  to  Parent and
Purchaser and their counsel, and (ii)  an assignment of all copyright and  other
rights  of ownership  in and  to the  products of  the Acquired  Company and the
Subsidiaries from each of the entities described in EXHIBIT 3.14.2(III) that are
also listed  on  EXHIBIT 6.8(B)  in  a  form reasonably  acceptable  to  Parent,
Purchaser  and their counsel. Further the Acquired Company shall have received a
release and waiver in respect of the agreement identified on EXHIBIT 3.24 as  to
the  matters listed on EXHIBIT 6.8(C) in a form reasonably acceptable to Parent,
Purchaser and  their  counsel.  With  respect  to  those  agreements  among  the
"Licensing and Remarketing Agreements" identified on EXHIBIT 6.8(A) that involve
the  licensing by the Acquired Company or  a Subsidiary of Licensed Software, in
the event  that the  Acquired Company  or  a Subsidiary  (whichever is  a  party
thereto)  notifies Purchaser no  later than thirty (30)  days following the date
hereof that, notwithstanding its  reasonable best efforts to  do so, it will  be
unable to obtain a consent to assignment of the same to Purchaser by the Closing
Date,  then Acquired Company and Purchaser shall use their respective reasonable
best efforts to arrange for the acquisition of a product or products  comparable
to  those  licensed to  the Acquired  Company or  such Subsidiary  thereunder at
comparable cost;  provided,  however, that  the  inability of  such  parties  to
arrange  for the same shall not relieve  the Acquired Company or such Subsidiary
of its obligations described above, unless  the failure to obtain such  consent,
together  with the  failures, if  any, to obtain  consents with  respect to such
other "Licensing and Remarketing Agreements," would not have a Material  Adverse
Effect.  With  respect to  each agreement  included  within such  "Licensing and
Remarketing Agreements" pursuant to which  the Acquired Company or a  Subsidiary
has  been granted the right to remarket the products of others, the inability of
the Acquired Company or a Subsidiary (whichever is party to the same) to  obtain
the consent of the third party thereto to assign such agreement to the Purchaser
shall  not  constitute  a  breach  of  this  Section  6.8  unless  such failure,
 
                                      A-30
<PAGE>
together with  the  failure  to  obtain  consents  with  respect  to  all  other
"Licensing  and Remarketing Agreements,"  would have a  Material Adverse Effect.
The failure of the Acquired  Company or a Subsidiary  to obtain the consents  to
assignment to Purchaser of the "Customer Contracts" identified on EXHIBIT 6.8(A)
shall  not constitute  a failure  to fulfill  the obligation  set forth  in this
Section 6.8 with respect to the  same provided that the Customer Contracts  with
respect  to which  such consents have  not been  obtained do not  involve in the
aggregate the receipt of recurring revenue of greater than $613,000 on an annual
basis and do not constitute three or more Customer Contracts.
 
    6.9  ACCOUNTANTS' POOLING LETTERS.  Parent shall have received letters  from
Ernst  & Young LLP and  Arthur Andersen, LLP, dated as  of the effective date of
the Registration  Statement and  as  of the  Closing  Date addressed  to  Parent
advising  it,  as set  forth in  Section 2.3.2  hereof, that  the Merger  may be
accounted for  as a  pooling  of interests  and otherwise  in  such form  as  is
customary and reasonably acceptable to Parent.
 
    6.10    ACCOUNTANT'S  COMFORT  LETTERS.   Purchaser  and  Parent  shall have
received letters  from Ernst  & Young  dated as  of the  effective date  of  the
Registration  Statement and as  of the Closing Date,  addressed to Purchaser and
Parent, containing  such  matters  as are  customarily  contained  in  auditors'
letters  regarding  the  Acquired  Company  Information  provided  expressly for
inclusion in such Registration Statement,  and in form and substance  reasonably
satisfactory to Parent.
 
    6.11   COVENANTS  NOT TO  COMPETE.   Purchaser shall  have received executed
non-competition agreements from each of  those persons listed on EXHIBIT  6.11A,
with each such agreement in the form of EXHIBIT 6.11B hereto.
 
    6.12   FEE LIMITATION.  The only fees and expenses to any investment banking
firm or similar entity that will  be incurred by Acquired Company in  connection
with  the transaction with Parent and Purchaser will be the fees and expenses of
Broadview Associates,  L.P.  and  shall  not exceed  one  percent  (1%)  of  the
consideration  to be received by the Acquired Company's stockholders pursuant to
the Merger.
 
VII.  FURTHER CONDITIONS PRECEDENT TO THE OBLIGATIONS OF THE ACQUIRED COMPANY.
 
    In addition  to  the  conditions set  forth  in  Article V  above,  all  the
obligations of the Acquired Company to consummate the Merger shall be contingent
upon  and subject  to the satisfaction,  on or  before the Closing,  of each and
every one of the following conditions. The following conditions are for the sole
benefit of the  Acquired Company  and may be  asserted by  the Acquired  Company
regardless  of the circumstances  giving rise to  any such condition  and may be
waived by the Acquired Company, in whole or  in part, at any time and from  time
to  time,  in  the sole  discretion  of  the Acquired  Company  for  purposes of
consummating the transactions contemplated herein.  The failure by the  Acquired
Company  at any time to exercise any of the foregoing rights shall not be deemed
a waiver of any  other right, and  each right shall be  deemed an ongoing  right
that may be asserted at any time and from time to time.
 
    7.1    REPRESENTATIONS OF  PURCHASER AND  PARENT.   All  representations and
warranties made by  Purchaser and Parent  in this Agreement,  in the  statements
contained  in  the  Exhibits  hereto  or in  any  certificate  delivered  by the
Purchaser or the  Parent pursuant to  this Agreement shall  be true and  correct
when made, and shall be true and correct at and as of the Closing Date as though
such  representations and warranties were made or given on and as of the Closing
Date, in  each  case (i)  as  if none  of  such representations  and  warranties
contained  any  qualifications  as to  materiality  or the  absence  of Material
Adverse Effect,  and (ii)  except  for changes  arising  in connection  with  or
contemplated  by  this  Agreement; PROVIDED  HOWEVER,  that  notwithstanding the
foregoing, this condition  shall be deemed  to be satisfied  if all breaches  of
such representations and warranties, after giving effect to clauses (i) and (ii)
above,  do not cumulatively constitute, or  cumulatively could not reasonably be
expected to have, a Material Adverse Effect.
 
                                      A-31
<PAGE>
    7.2  COVENANTS OF PURCHASER AND PARENT.  Purchaser and Parent shall have, or
caused  to be, performed and observed  in all respects all covenants, agreements
and conditions hereof  to be  performed or  observed by  them at  or before  the
Closing Date.
 
    7.3   NO MATERIAL  ADVERSE CHANGE.   Since the date  of this Agreement there
shall not have been any change in the business, properties, rights or operations
of the Parent or the Parent Subsidiaries,  taken as a whole, which constitute  a
Material Adverse Effect on the Parent and the Parent Subsidiaries.
 
    7.4  CERTIFICATE.  The Acquired Company shall have received a certificate of
the  President of each  of Parent and  Purchaser, dated as  of the Closing Date,
certifying as to the matters set forth in Sections 7.1 through 7.3 above.
 
    7.5  OPINION  OF PARENT'S  AND PURCHASER'S  COUNSEL.   The Acquired  Company
shall  have received an opinion of Jones, Day, Reavis & Pogue, counsel to Parent
and Purchaser, dated as of the Closing Date, substantially in the form set forth
in EXHIBIT 7.4.
 
    7.6  TAX OPINION.  The Acquired Company shall have received for the  benefit
of  its  stockholders an  opinion from  its tax  counsel based  upon appropriate
assumptions and representations of the  parties and certain stockholders of  the
Acquired  Company, dated as of  the Closing Date, to  the effect that the Merger
will qualify as a reorganization pursuant to Section 368(a) of the Tax Code.
 
    7.7  ACCOUNTANT'S POOLING LETTERS.  The Acquired Company shall have received
letters from  Ernst  &  Young LLP  and  Arthur  Andersen,LLP, dated  as  of  the
effective  date  of  the  Registration  Statement and  as  of  the  Closing Date
addressed to the  Acquired Company advising  it, as set  forth in Section  2.3.2
hereof,  that the  Merger may  be accounted  for as  a pooling  of interests and
otherwise in such form as is customary and reasonably acceptable to the Acquired
Company.
 
VIII.  CLOSING.
 
    8.1  TIME AND PLACE OF CLOSING.   Unless another place or date is agreed  to
in  writing by the Acquired Company and  Purchaser, the Closing shall be held at
the offices  of Jones,  Day, Reavis  &  Pogue, 3500  One Peachtree  Center,  303
Peachtree  Street N.E.,  Atlanta, Georgia  30308-3242, commencing  at 10:00 a.m.
Eastern Time, within  two (2)  business days  of the last  to occur  of (i)  the
expiration  or termination  of the  waiting period under  the HSR  Act, (ii) the
Merger having been approved by the stockholders of the Acquired Company pursuant
to the  Delaware  Code  and  (iii)  the satisfaction  or  waiver  of  the  other
conditions  set forth in Articles V, VI and VII. (The actual date of the Closing
is referred in this Agreement as the "Closing Date.")
 
    8.2   TRANSACTIONS  AT CLOSING.    At the  Closing,  each of  the  following
transactions shall occur:
 
    8.2.1.   THE ACQUIRED  COMPANY'S PERFORMANCE.  At  the Closing, the Acquired
Company shall deliver to Purchaser and Parent, the following:
 
        (a) copies of the consents and waivers described in Section 2.9;
 
        (b) satisfactory evidences of the approvals described in Section 5.4;
 
        (c) the certificate  described in  Section 6.4  to be  delivered on  the
    Closing Date;
 
        (d)  certificates of compliance or certificates  of good standing of the
    Acquired Company and of the Subsidiaries, as of the most recent  practicable
    date,  from the  appropriate governmental  authority of  the jurisdiction of
    their respective incorporation;
 
        (e) certified  copies  of resolutions  of  the Board  of  Directors  and
    stockholders of the Acquired Company approving the transactions set forth in
    this Agreement;
 
        (f) certificates of incumbency for the officers of the Acquired Company;
 
        (g) resignations of each trustee of each Benefit Plan;
 
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<PAGE>
        (h) Certificate of Merger and a Plan of Merger, each in form and content
    that complies with the Delaware Code, executed by the Acquired Company;
 
        (i)  the  opinion of  counsel for  the  Acquired Company,  referenced in
    Section 6.5;
 
        (j)  the Rule 145 Letters and Pooling Letters described in Section 2.4;
 
        (k) the letters described in Section 2.13.1 hereof;
 
        (l) the letters described in Section 2.3.2 hereof;
 
        (m) the letters from Ernst  & Young LLP to  be delivered by the  Closing
    Date as described in Section 6.9;
 
        (n)  each of the Covenants Not  to Compete fully executed and delivered;
    and
 
        (o) such  other  evidence  of  the  performance  of  all  covenants  and
    satisfaction  of all  conditions required  of the  Acquired Company  by this
    Agreement, at or prior to the Closing, as Purchaser, Parent or their counsel
    may reasonably require.
 
    8.2.2.  PERFORMANCE BY PURCHASER AND  PARENT.  At the Closing, Purchaser  or
Parent, as appropriate, shall deliver to the Acquired Company the following:
 
        (a) the certificates described in Section 7.4;
 
        (b)  certificates  of incumbency  of the  officers  of Purchaser  and of
    Parent who are executing this Agreement and the other documents contemplated
    hereunder;
 
        (c) certified copies of resolutions of  the Boards of Directors of  each
    of  Purchaser  and Parent  (or Executive  Committees thereof)  approving the
    transactions set forth in this Agreement;
 
        (d) certificates of compliance or  certificates of good standing of  the
    Parent  and the Purchaser, as of the  most recent practicable date, from the
    appropriate governmental authority of  the jurisdiction of their  respective
    incorporation;
 
        (e) Certificate of Merger and a Plan of Merger, each in form and content
    that complies with the Delaware Code, executed by Purchaser;
 
        (f)  certificates of incumbency  for the officers of  the Parent and the
    Purchaser;
 
        (g) the  opinion  of counsel  for  Purchaser and  Parent  referenced  in
    Section 7.5; and
 
        (h)  the  letters from  Arthur  Andersen, LLP,  to  be delivered  by the
    Closing Date as described in Section 7.7;
 
        (i) such other  evidence of  the performance  of all  the covenants  and
    satisfaction of all of the conditions required of Purchaser and of Parent by
    this  Agreement at  or before  the Closing  as the  Acquired Company  or its
    counsel may reasonably require.
 
IX.  NON-SURVIVAL OF REPRESENTATIONS, WARRANTIES AND AGREEMENTS.
 
    9.1  Except for the covenants contained in Sections 2.1.7(d), 2.1.10, 2.2.2,
2.3.6, 2.3.8,  2.13.1,  2.14  and  2.16,  all  representations,  warranties  and
agreements  in this  Agreement or in  any instrument delivered  pursuant to this
Agreement (other  than the  Covenants  Not To  Compete)  shall not  survive  the
Closing,  and thereafter no party hereto and no officer, director or employee of
any such party  shall have  any liability whatsoever  with respect  to any  such
representation, warranty or agreement except for liabilities arising from fraud,
willful misconduct or criminal acts.
 
X.  TERMINATION.
 
    10.1   METHOD  OF TERMINATION.   This Agreement constitutes  the binding and
irrevocable agreement of the parties to consummate the transactions contemplated
hereby, the consideration for which is (a) the covenants set forth in Article II
hereof,   and    (b)   expenditures    and   obligations    incurred   and    to
 
                                      A-33
<PAGE>
be  incurred  by Purchaser  and Parent,  on the  one hand,  and by  the Acquired
Company, on the other hand, in respect of this Agreement, and this Agreement may
be terminated or abandoned only as follows:
 
    10.1.1.  By the mutual  consent of the Boards  of Directors of the  Acquired
Company and Parent, notwithstanding prior approval by the stockholders of any or
all of such corporations;
 
    10.1.2.   By  the Board of  Directors of  the Parent in  accordance with its
rights under Section 10.3;
 
    10.1.3.  By the Board of  Directors of the Acquired Company after  September
30,  1996, if any of the  conditions set forth in Articles  V and VII hereof, to
which the Acquired Company's obligations are subject, have not been fulfilled or
waived, unless such fulfillment  has been frustrated or  made impossible by  any
act or failure to act of it or the Subsidiaries;
 
    10.1.4.  By Purchaser after September 30, 1996, if any of the conditions set
forth  in Articles V  and VI hereof,  to which the  obligations of Purchaser and
Parent are subject, have not been  fulfilled or waived, unless such  fulfillment
has been frustrated or made impossible by any act or failure to act of Purchaser
or Parent.
 
    10.1.5.    By the  Board  of Directors  of the  Acquired  Company if  in the
exercise of its good faith  determination, as set forth  in Section 2.11, as  to
its  fiduciary duties to the Acquired Company's stockholders imposed by law, the
Board of Directors  of the  Acquired Company  decides that  such termination  is
required.
 
    10.2  EFFECT OF TERMINATION.
 
    10.2.1.  Except as provided in Section 10.2.2, and except as provided in the
immediately succeeding sentence, in the event of a termination of this Agreement
pursuant  to Section  10.1.1, Section 10.1.2,  Section 10.1.3  or Section 10.1.4
hereof, each party shall pay the costs and expenses incurred by it in connection
with this Agreement, and no party (or any of its officers, directors, employees,
agents, representatives or stockholders) shall be liable to any other party  for
any  costs, expenses, damage or loss of anticipated profits hereunder. Except as
provided in Section 10.2.2, in the event  of a termination of this Agreement  by
Acquired  Company pursuant  to Section  10.1.3 hereof by  reason of  a breach by
Parent and/or  Purchaser of  one or  more of  their respective  representations,
warranties  or covenants contained herein (which, in turn, causes one or more of
the conditions  in  Sections  7.1,  7.2  or 7.4  not  to  be  fulfilled),  or  a
termination  of this Agreement by Purchaser pursuant to Section 10.1.4 hereof by
reason of a breach by  Acquired Company of one  or more of its  representations,
warranties  or covenants contained herein (which, in turn, causes one or more of
the conditions in  Sections 6.1,  6.2 or  6.4 not  to be  fulfilled), then  such
breaching party (the "Breaching Party" (and if either Parent or Purchaser has so
breached,  then Parent and  Purchaser shall be  deemed to be  a single Breaching
Party for all  purposes hereunder)) shall  pay to the  non-breaching party  (the
"Non-Breaching Party") the sum of $10,000,000, which shall constitute liquidated
damages  and shall be the  sole and exclusive remedy  of the Non-Breaching Party
for any and all damages arising under or in connection with this Agreement, and,
upon payment  of  such  amount, neither  the  Breaching  Party nor  any  of  its
officers,  directors, employees,  agents, representatives  or stockholders shall
have any liability or further obligation to the Non-Breaching Party under or  in
connection with this Agreement or any such termination thereof.
 
    10.2.2.    In the  event the  Agreement  is terminated  (a) by  the Acquired
Company in accordance with  Section 10.1.5, or (b)  by the Parent, Purchaser  or
Acquired  Company in accordance with  Section 10.1.3 or 10.1.4  by reason of the
failure of the  condition set  forth in Section  5.4 hereof,  then the  Acquired
Company  shall promptly pay (i)  in an aggregate amount  not to exceed $500,000,
all reasonable costs and expenses of Purchaser and Parent incurred in connection
with the  negotiation  and  performance  of  this  Agreement  including  without
limitation fees and expenses of counsel, fees and expenses of independent public
accountants, printing expenses and registration fees and (ii) to Purchaser a fee
in the amount of $10,000,000 in the case of a termination as described in clause
(a) above. In the case of any termination of this Agreement under Section 10.1.5
(and solely by reason
 
                                      A-34
<PAGE>
thereof),  payment  of  the amount  specified  in the  preceding  sentence shall
constitute liquidated damages and shall be the sole and exclusive remedy of  the
Parent  and the Purchaser for any and all damages arising under or in connection
with this Agreement, and, upon payment of the amount specified in the  preceding
sentence,  neither the Acquired Company  nor any officers, directors, employees,
agents, representatives or stockholders of  the Acquired Company shall have  any
liability  or further  obligation to  the Parent  or the  Purchaser under  or in
connection with this Agreement or any such termination hereof.
 
    10.3  RISK OF LOSS.  The Acquired Company retains all risk of  condemnation,
destruction,  loss or damage due to fire or other casualty from the date of this
Agreement up to the Effective Time.  If the condemnation, destruction, loss,  or
damage  is such that the business of  the Acquired Company and the Subsidiaries,
taken as a whole, is  materially interrupted or curtailed  or the assets of  the
Acquired  Company  and  the  Subsidiaries,  taken  as  a  whole,  are materially
affected, then Purchaser shall have the right to terminate this Agreement.
 
XI.  GENERAL PROVISIONS.
 
    11.1   NOTICES.   All notices,  requests, demands  and other  communications
hereunder  shall  be in  writing and  shall be  delivered by  hand or  mailed by
certified mail, return receipt requested,  first class postage prepaid, or  sent
by   Federal  Express  or  similar   overnight  delivery  service  with  receipt
acknowledged addressed as follows:
 
    11.1.1.  If to the Acquired Company:
           CyCare Systems,Inc.
           7001 North Scottsdale Road, Suite 1000
           Scottsdale, Arizona 85323-3644
           Attn: Mr. Jim H. Houtz
           and to:
           Snell & Wilmer LLP
           One Arizona Center
           Phoenix, Arizona 85004-0001
           Attn: Matthew P. Feeney, Esq.
 
    11.1.2.  If to Purchaser or Parent:
           HBO & Company
           301 Perimeter Center North
           Atlanta, Georgia 30346
           Attn: Mr. Jay P. Gilbertson
           and to:
           Jones, Day, Reavis & Pogue
           3500 One Peachtree Center
           303 Peachtree Street, N.E.
           Atlanta, Georgia 30308-3242
           Attention: John E. Zamer, Esq.
 
    11.1.3.   If delivered  personally, the  date on  which a  notice,  request,
instruction or document is delivered shall be the date on which such delivery is
made  and, if delivered  by mail or  by overnight delivery  service, the date on
which such notice,  request, instruction or  document is received  shall be  the
date of delivery. In the event any such notice, request, instruction or document
is mailed or shipped by overnight delivery service to a party in accordance with
this  Section 11.1 and  is returned to  the sender as  nondeliverable, then such
notice, request, instruction or document shall be deemed to have been  delivered
or  received on  the fifth  day following the  deposit of  such notice, request,
instruction or  document in  the United  States  mails or  the delivery  to  the
overnight delivery service.
 
                                      A-35
<PAGE>
    11.1.4.    Any party  hereto may  change its  address specified  for notices
herein by designating a  new address by notice  in accordance with this  Section
11.1.
 
    11.2   BROKERS.  Purchaser and  Parent, jointly and severally, represent and
warrant to the Acquired Company that no  broker or finder has acted for them  or
any  entity  controlling, controlled  by or  under common  control with  them in
connection with this Agreement. The Acquired Company represents and warrants  to
Purchaser  and the Parent that, except for Broadview Associates, L.P., no broker
or finder has acted  for it or  any entity controlling,  controlled by or  under
common  control with it in connection  with this Agreement. The Acquired Company
agrees to indemnify  and hold  harmless Purchaser  and Parent  against any  fee,
loss,  or expense arising out of any claim by Broadview Associates, L.P., or any
other broker or finder employed or alleged to have been employed by it or any of
the Subsidiaries or any of the  Acquired Company's stockholders. The Parent  and
Purchaser  agree to indemnify and hold harmless the Acquired Company against any
fee,loss or expense arising out of any claim by any broker or finder employed or
alleged to  have  been  employed by  Parent,  Purchaser  or any  of  the  Parent
Subsidiaries.  The fees and expenses of Broadview Associates, L.P. and any other
broker or  finder  shall  be  paid  by the  Acquired  Company,  subject  to  the
limitations  set forth in Section 6.12, in  conjunction with such other fees set
forth in Section 11.5.
 
    11.3  FURTHER ASSURANCES.  Each party  covenants that at any time, and  from
time  to  time,  after  the  Effective Time,  it  will  execute  such additional
instruments and take such  actions as may be  reasonably requested by the  other
parties  to confirm or perfect or otherwise to carry out the intent and purposes
of this Agreement.
 
    11.4  WAIVER.  Any  failure on the part of  any party hereto to comply  with
any  of its obligations, agreements or conditions hereunder may be waived by any
other party to whom such compliance is owed. No waiver of any provision of  this
Agreement shall be deemed, or shall constitute, a waiver of any other provision,
whether or not similar, nor shall any waiver constitute a continuing waiver.
 
    11.5   EXPENSES.  Except as provided in 10.2.2, all expenses incurred by the
parties hereto in connection with  or related to the authorization,  preparation
and execution of this Agreement and the Closing of the transactions contemplated
hereby,  including, without limitation  of the generality  of the foregoing, all
fees and expenses of agents,  representatives, counsel and accountants  employed
by  any such  party, shall be  borne solely and  entirely by the  party that has
incurred the same.
 
    11.6   PRESS  RELEASES AND  DISCLOSURE.   In  the  event that  either  party
proposes  to issue, make or distribute any press release, public announcement or
other written publicity or disclosure prior  to the Closing Date that refers  to
the   transactions  contemplated  herein,  the  party  proposing  to  make  such
disclosure shall provide  a copy  of such disclosure  to the  other parties  and
shall  afford the  other parties  reasonable opportunity  (subject to  any legal
obligation of prompt disclosure)  to comment on such  disclosure or the  portion
thereof  which refers  to the transactions  contemplated herein  prior to making
such disclosure.
 
    11.7  BINDING EFFECT.  This Agreement shall be binding upon and inure to the
benefit of the parties hereto and their respective heirs, legal representatives,
executors, administrators, successors and assigns.
 
    11.8   HEADINGS.   The section  and  other headings  in this  Agreement  are
inserted solely as a matter of convenience and for reference, and are not a part
of this Agreement.
 
    11.9    ENTIRE  AGREEMENT.   This  Agreement and  all  agreements referenced
specifically in  this  Agreement and  executed  as required  by  this  Agreement
constitute  the  entire agreement  among the  parties  hereto and  supersede and
cancel any  prior agreements,  representations, warranties,  or  communications,
whether  oral or written, among the  parties hereto relating to the transactions
contemplated hereby or the subject matter herein. Neither this Agreement nor any
provision hereof may be  changed, waived, discharged  or terminated orally,  but
only  by an agreement in  writing signed by the party  against whom or which the
enforcement of such change, waiver, discharge or termination is sought.
 
                                      A-36
<PAGE>
    11.10  REMEDIES CUMULATIVE.  All rights, powers and remedies provided  under
this  Agreement or  otherwise available  in respect hereof  at law  or in equity
shall be cumulative and  not alternative, and the  exercise or beginning of  the
exercise  of any  thereof by  any party shall  not preclude  the simultaneous or
later exercise of any such other right, power or remedy by such party.
 
    11.11   SPECIFIC  PERFORMANCE.   The  parties acknowledge  that,  except  as
provided  in  Section  10.2,  money  damages  are  not  an  adequate  remedy for
violations of this  Agreement and that  any party may,  in its sole  discretion,
apply  to  a  court  of  competent  jurisdiction  for  specific  performance  or
injunctive or such other relief as such court may deem just and proper in  order
to  enforce this Agreement  or prevent any  violation hereof and,  to the extent
permitted by applicable law, each party  waives any objection to the  imposition
of such relief.
 
    11.12   GOVERNING LAW.   Except to the  extent the transactions contemplated
hereby are governed by  the Delaware Code, this  Agreement shall be governed  by
and construed in accordance with the laws of the State of Georgia.
 
    11.13    COUNTERPARTS.   This  Agreement  may  be executed  in  two  or more
counterparts, each  of which  shall be  deemed  an original,  but all  of  which
together shall constitute one and the same instrument.
 
    11.14   NO AGREEMENT UNTIL EXECUTED.  This Agreement shall not constitute or
be deemed to evidence  a contract or agreement  among the parties hereto  unless
and  until executed by  all parties hereto,  irrespective, of negotiations among
the parties or the exchanging of drafts of this Agreement.
 
    11.15  PRONOUNS.  All pronouns used  herein shall be deemed to refer to  the
masculine, feminine or neuter gender as the context requires.
 
    11.16   EXHIBITS INCORPORATED.  All Exhibits attached hereto are an integral
part of this Agreement.
 
    11.17  TIME OF ESSENCE.  Time is of the essence in this Agreement.
 
    11.18  KNOWLEDGE.  The  term "knowledge" when applied  to any party to  this
Agreement shall refer only to the actual knowledge of that party (or in the case
of  either Parent,  Purchaser or Acquired  Company, the actual  knowledge of its
respective employees listed or described  on EXHIBIT 11.18), but no  information
known   by  any   other  employee,   or  any   attorney,  accountant   or  other
representative, of such party shall be imputed to such party.
 
                                      A-37
<PAGE>
    IN WITNESS WHEREOF, each party hereto has executed or caused this  Agreement
to be executed on its behalf, all on the day and year first above written.
 
                      "PURCHASER":
                      HBO & COMPANY OF GEORGIA
 
                      By:     /s/ JAY P. GILBERTSON
                              --------------------------------------------
                      Title:  Sr. V. P. - Finance and Chief Financial Officer
                              --------------------------------------------
 
                      "PARENT":
                      HBO & COMPANY
 
                      By:     /s/ JAY P. GILBERTSON
                              --------------------------------------------
                      Title:  Sr. V. P. - Finance and Chief Financial Officer
                              --------------------------------------------
 
                      "ACQUIRED COMPANY":
                      CYCARE SYSTEMS, INC.
 
                      By:     /s/ J. H. HOUTZ
                              --------------------------------------------
                      Title:  Chief Executive Officer and Chairman
                              --------------------------------------------
 
                                      A-38
<PAGE>
                                                                      APPENDIX B
   
                            BROADVIEW ASSOCIATES LLC
    
 
   
One Bridge Plaza
Fort Lee, New Jersey 07024
201/346-9000
FAX 201/346-9191
http://www.broadview.com
    
 
   
                                                July 18, 1996
                                                 CONFIDENTIAL
    
 
Board of Directors
CyCare Systems, Inc.
7001 North Scottsdale Rd., Suite 1000
Scottsdale, AZ 85253
 
Dear Members of the Board:
 
We understand that CyCare Systems, Inc. ("CyCare"), HBO & Company ("HBOC"), and
HBO & Company of Georgia (the "Purchaser") are proposing a transaction (the
"Transaction") pursuant to which, through the merger of CyCare with and into the
Purchaser, each share of CyCare stock issued and outstanding shall be converted
into the right to receive 0.86 of a share of HBOC stock, subject to adjustment
as provided in the Agreement (as defined below). The proposed Transaction is
intended to be a tax-free reorganization within the meaning of section 368(a) of
the United States Internal Revenue Service Code of 1986, as amended, and to be
accounted for as a pooling of interests pursuant to Opinion No. 16 of the
Accounting Principles Board. The terms and conditions of the Transaction are
more fully detailed in the Agreement.
 
   
You have requested our opinion as to whether the consideration to be received by
CyCare's shareholders in the Transaction is fair, from a financial point of
view, to CyCare's shareholders.
    
 
Broadview Associates focuses on providing merger and acquisition advisory
services to information technology ("IT") companies. In this capacity, we are
continually engaged in valuing such businesses, and we maintain an extensive
database of IT mergers and acquisitions for comparative purposes. We are
currently acting as financial advisor to CyCare's Board of Directors and will
receive a fee from CyCare upon the successful conclusion of the Transaction.
 
San Mateo, CA                     Fort Lee, NJ                            London
 
            Member, National Association of Securities Dealers, Inc.
<PAGE>
   
                            BROADVIEW ASSOCIATES LLC
    
 
   
CyCare Systems, Inc. Board of Directors                            July 18, 1996
    
 
Page 2
 
In rendering our opinion, we have, among other things:
 
1.)  reviewed  the terms of the Agreement  of Merger (the "Agreement") furnished
     to us by Snell & Wilmer L.L.P.;
 
2.)  reviewed the  financial statements  of CyCare  for its  fiscal years  ended
     December  31, 1993,  1994, and 1995  audited by  Ernst & Young  LLP and the
     unaudited financial statements of CyCare  for the three months ended  March
     31, 1996 included within CyCare's Form 10-Q for such period;
 
3.)  reviewed internal historical financial and operating data concerning CyCare
     prepared and provided to us by CyCare management;
 
4.)  reviewed  financial projections for  CyCare prepared and  provided to us by
     CyCare management;
 
5.)  participated  in  discussions   with  CyCare   management  concerning   the
     operations,  business  strategy,  financial performance  and  prospects for
     CyCare;
 
6.)  discussed with CyCare management  its view of  the strategic rationale  for
     the Transaction;
 
7.)  reviewed the reported closing prices and trading activity for CyCare stock;
 
8.)  compared certain aspects of the financial performance of CyCare with public
     companies we deemed comparable;
 
9.)  analyzed  available information, both public  and private, concerning other
     mergers and acquisitions we believe to be comparable in whole or in part to
     the Transaction;
 
10.) reviewed HBOC's annual  report and  Form 10-K  for the  fiscal years  ended
     December  31, 1993, 1994, and 1995 and Form 10-Q for the three month period
     ended March 31, 1996 including the financial statements included therein;
 
11.) participated in discussions with HBOC management concerning the operations,
     business strategy, financial performance and prospects for HBOC;
 
12.) discussed with HBOC management its view of the strategic rationale for  the
     Transaction;
 
13.) reviewed the reported closing prices and trading activity for HBOC stock;
 
   
14.) considered  the  total  number of  shares  of HBOC  stock  outstanding, the
     average weekly trading volume  of HBOC stock, and  the maximum time  period
     for CyCare stockholders to liquidate their HBOC stock given SEC regulations
     and the registration rights outlined in the Agreement;
    
 
15.) reviewed recent equity analyst reports covering HBOC;
 
16.) analyzed  the anticipated effect of the Transaction on the future financial
     performance of the consolidated entity;
 
17.) participated in  negotiations and  discussions related  to the  Transaction
     among CyCare, HBOC and their financial and legal advisors; and
 
                                      B-2
<PAGE>
   
                            BROADVIEW ASSOCIATES LLC
    
 
   
     CyCare Systems, Inc. Board of Directors                       July 18, 1996
    
 
     Page 3
 
18.) conducted other financial studies, analyses and investigations as we deemed
     appropriate for purposes of this opinion.
 
     In rendering our opinion, we have relied, without independent verification,
     on the accuracy and completeness of all the financial and other information
     (including without limitation the representations and warranties contained
     in the Agreement) that was publicly available or furnished to us by CyCare
     or HBOC. With respect to the financial projections examined by us, we have
     assumed that they were reasonably prepared and reflected the best available
     estimates and good faith judgments of the management of CyCare as to the
     future performance of CyCare. We have neither made nor obtained an
     independent appraisal or valuation of any of CyCare's assets. We have not
     reviewed any internal financial projections prepared by HBOC management as
     such projections have not been made available to us.
 
   
     Based upon and subject to the foregoing, we are of the opinion that the
     consideration to be received by CyCare's shareholders in the Transaction is
     fair, from a financial point of view, to CyCare's shareholders.
    
 
     This opinion speaks only as of the date hereof. It is understood that this
     opinion is for the information of the Board of Directors of CyCare in
     connection with its consideration of the Transaction, and does not
     constitute a recommendation to any CyCare stockholder as to how such
     stockholder should vote on the Transaction. Broadview Associates does not
     believe that any other person other than the Board of Directors of CyCare
     has the legal right under state law to rely on this opinion and, in the
     absence of any governing precedents, we would resist any assertion
     otherwise by any such person. This opinion may not be published or referred
     to, in whole or part, without our prior written permission, which shall not
     be unreasonably withheld. Broadview Associates hereby consents to
     references to and the inclusion of this opinion in its entirety in the
     Proxy Statement/ Prospectus to which this opinion appears as Appendix B.
 
                                         Sincerely,
 
   
                                         /s/ Broadview Associates LLC
    
 
   
                                         Broadview Associates LLC
    
 
                                      B-3
<PAGE>
                                     PROXY
 
                              CYCARE SYSTEMS, INC.
 
                     7001 NORTH SCOTTSDALE ROAD, SUITE 1000
                         SCOTTSDALE, ARIZONA 85253-3644
 
          THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS
 
    The  undersigned hereby appoints Jim H. Houtz  and Mark R. Schonau, and each
of them, as Proxies, each with the  power to appoint his or her substitute,  and
hereby  authorizes them to represent,  and to vote as  designated on the reverse
side, all of the shares of Common  Stock of CyCare Systems, Inc. held of  record
by  the undersigned on July 16, 1996, at a Special Meeting of Stockholders to be
held on Wednesday,  August 21, 1996,  at 9:00  a.m., local time,  at 7001  North
Scottsdale  Road,  Suite  1000,  Scottsdale,  Arizona,  or  any  adjournment  or
postponement thereof upon the  following matter, as set  forth in the Notice  of
said  Meeting dated  July 18,  1996, a copy  of which  has been  received by the
undersigned.
 
1.   APPROVAL OF  AGREEMENT OF  MERGER dated  May 18,  1996, by  and  among
     CyCare Systems, Inc., HBO & Company and HBO & Company of Georgia.
 
              / /  FOR          / /  AGAINST          / /  ABSTAIN
 
2.   In  their discretion,  the Proxies  are authorized  to vote  upon such
     other matters  that  may  properly  come before  the  meeting  or  any
     adjournment or postponement thereof.
 
                   CONTINUED AND TO BE SIGNED ON REVERSE SIDE
<PAGE>
    THIS  PROXY, WHEN  PROPERLY EXECUTED, WILL  BE VOTED IN  THE MANNER DIRECTED
HEREIN BY THE UNDERSIGNED STOCKHOLDER. IF NO DIRECTION IS MADE, THIS PROXY  WILL
BE VOTED FOR THE PROPOSAL.
 
    PLEASE  PROMPTLY  MARK,  SIGN, DATE  AND  RETURN  THE PROXY  CARD  USING THE
ENCLOSED POSTAGE PRE-PAID ENVELOPE.
                                              Signature: _______________________
                                              Date _____________________________
                                              Signature: _______________________
                                              Date _____________________________
 
                                              Please sign exactly  as your  name
                                              appears  on  this  proxy.  If  the
                                              shares represented  by this  proxy
                                              are  held  by joint  tenants, both
                                              must   sign.   When   signing   as
                                              attorney, executor, administrator,
                                              trustee  or guardian,  please give
                                              full title as such. If stockholder
                                              is a corporation,  please sign  in
                                              full  corporate name  by President
                                              or other  authorized  officer.  If
                                              stockholder   is   a  partnership,
                                              please sign in partnership name by
                                              authorized person.
<PAGE>
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
    HBO & Company's (the "Company") By-Laws (Article IX, Section 1) provide that
every  person who was or is a party or is threatened to be made a party to or is
involved  in  any   action,  suit  or   proceeding,  whether  civil,   criminal,
administrative  or investigative, by reason  of the fact that  he or a person of
whom he is  the legal  representative is  or was a  director or  officer of  the
corporation  or is or was  serving at the request of  the corporation or for its
benefit  as  a  director   or  officer  of  another   corporation,  or  as   its
representative in a partnership, joint venture, trust or other enterprise, shall
be indemnified and held harmless to the fullest extent legally permissible under
and  pursuant to any procedure  specified in the General  Corporation Law of the
State of  Delaware,  as  amended  from  time  to  time,  against  all  expenses,
liabilities  and losses (including attorneys' fees, judgments, fines and amounts
paid or to  be paid in  settlement) reasonably  incurred or suffered  by him  in
connection  therewith. Such right  of indemnification shall  be a contract right
that may be enforced in any manner by such person. Such right of indemnification
shall not be  exclusive of  any other right  which such  directors, officers  or
representatives  may  have  or  thereafter  acquire  and,  without  limiting the
generality of such statement, they shall be entitled to their respective  rights
of  indemnification under any bylaw,  agreement, vote of stockholders, provision
of law or otherwise, as well as their rights under such article.
 
    Article IX, Section 2  of the Company's By-Laws  provides that the Board  of
Directors may cause the corporation to purchase and maintain insurance on behalf
of  any person who is or was a director  or officer of the corporation, or is or
was serving  at the  request of  the corporation  as a  director or  officer  of
another  corporation, or as its representative  in a partnership, joint venture,
trust or other enterprise against any liability asserted against such person and
incurred in any such capacity or arising out of such status, whether or not  the
corporation would have the power to indemnify such person.
 
    With  respect to indemnification  of officers and  directors, Section 145 of
the Delaware General Corporation Law provides that a corporation shall have  the
power  to indemnify any person who was or is a party or is threatened to be made
a party to  any threatened, pending  or completed action,  suit or  proceedings,
whether  civil, criminal, administrative or  investigative (other than an action
by or in the right of the corporation) by reason of the fact that he is or was a
director, officer, employee or agent of the corporation, or is or was serving at
the request of  the corporation  as a director,  officer, employee  or agent  of
another  corporation,  partnership, joint  venture,  trust or  other enterprise,
against expenses (including attorneys' fees), judgments, fines and amounts  paid
in  settlement actually and  reasonably incurred by him  in connection with such
action, suit  or proceeding  if  he acted  in  good faith  and  in a  manner  he
reasonably  believed  to be  in  or not  opposed to  the  best interests  of the
corporation, and, with  respect to  any criminal  action or  proceeding, had  no
reasonable  cause to believe  his conduct was unlawful.  Under this provision of
the Delaware General  Corporation Law, the  termination of any  action, suit  or
proceeding  by judgment,  order, settlement, conviction  or upon a  plea of nolo
contendere or its equivalent,  shall not, of itself,  create a presumption  that
the  person  did not  act in  good faith  and  in a  manner which  he reasonably
believed to be in or not opposed to the best interests of the corporation,  and,
with  respect  to any  criminal action  or proceeding,  had reasonable  cause to
believe that his conduct was unlawful.
 
    Furthermore,  the  Delaware   General  Corporation  Law   provides  that   a
corporation shall have power to indemnify any person who was or is a party or is
threatened to be made a party to any threatened, pending, or completed action or
suit by or in the right of the corporation to procure a judgment in its favor by
reason  of the fact that he is or was a director, officer, employee, or agent of
the corporation, or is  or was serving  at the request of  the corporation as  a
director, officer, employee, or agent of another corporation, partnership, joint
venture,  trust,  or other  enterprise,  against expenses  (including attorneys'
fees), actually and reasonably incurred by him in connection with the defense or
settlement of such action or suit if he  acted in good faith and in a manner  he
reasonably  believed  to be  in  or not  opposed to  the  best interests  of the
corporation except that no indemnification shall be made
 
                                      II-1
<PAGE>
in respect of any claim, issue or matter as to which such person shall have been
adjudged to be liable to the corporation unless and only to the extent that  the
Court  of Chancery or the  court in which such action  or suit was brought shall
determine upon application that, despite  the adjudication of liability, but  in
view  of all  circumstances of  the case, such  person is  fairly and reasonably
entitled to indemnity  for such  expenses which the  Court of  Chancery or  such
other court shall deem proper.
 
    In  addition, the  General Corporation  Law of  Delaware enables  a Delaware
corporation  to  include  in  its  certificate  of  incorporation  a   provision
eliminating  or  limiting  a  director's liability  to  the  corporation  or its
stockholders for monetary damages for breaches of a director's fiduciary duty as
a director. The statute provides, however, that liability for (a) breach of  the
director's duty of loyalty, (b) acts or omissions not in good faith or involving
intentional  misconduct or knowing violations of  law, (c) the unlawful purchase
or redemption of stock  or unlawful dividends or  (d) transactions from which  a
director derived an improper personal benefit cannot be eliminated or limited in
this   manner.  The   Company's  Certificate  of   Incorporation  contains  such
provisions.
 
ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
    (a) Exhibits.   Items marked  with an  asterisk, "*,"  relate to  management
contracts  or  compensatory plans  or arrangements.  The following  exhibits are
filed as part of this Registration Statement.
 
<TABLE>
<CAPTION>
 EXHIBIT
 NUMBER                                      DESCRIPTION
- ---------  --------------------------------------------------------------------------------
<S>        <C>
 2         Agreement of Merger dated May 18, 1996 by and among HBO & Company, HBO & Company
            of Georgia and CyCare Systems, Inc. (included as Appendix A to the Proxy
            Statement/Prospectus contained in Part I of this Registration Statement).
 5         Opinion of Jones, Day, Reavis & Pogue re legality.
 8         Opinion of Snell & Wilmer L.L.P. re tax matters.
23(a)      Consent of Arthur Andersen LLP.
23(b)      Consent of Ernst & Young LLP.
23(c)      Consent of Jones, Day, Reavis & Pogue (included in Exhibit 5).
23(d)      Consent of Snell & Wilmer L.L.P. (included in Exhibit 8).
23(e)      Consent of Broadview Associates LLC (included as Appendix B to the Proxy
            Statement/Prospectus contained in Part I of this Registration Statement).
24+        Power of Attorney (included in signature page).
99.1+      Letter Agreement, dated May 18, 1996, by and among HBO & Company, HBO & Company
            of Georgia and CyCare Systems, Inc.
99.2+      Letter Agreement, dated June 10, 1996, by and among HBO & Company, HBO & Company
            of Georgia and CyCare Systems, Inc.
99.3       Consulting Agreement, dated July 15, 1996, by and between HBO & Company of
            Georgia and Jim H. Houtz.
</TABLE>
 
- ------------------------
+ Previously filed.
 
                                      II-2
<PAGE>
    The following exhibits filed with the Securities and Exchange Commission are
incorporated by reference as shown below.
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                                               DESCRIPTION
- -------            --------------------------------------------------------------------------------
<S>         <C>    <C>
                   ON MAY 13, 1981, AS PART OF ITS REGISTRATION STATEMENT ON FORM S-1 (REGISTRATION
                    NUMBER 2-72275):
  4(a)      --     Specimen forms of certificates for Common Stock of Registrant.
                   ON FEBRUARY 15, 1991, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 2-75987):
 *4         --     HBO & Company 1981 Incentive Stock Option Plan, as amended.
                   ON FEBRUARY 22, 1991, AS PART OF ITS FORM 8-K:
 *4         --     HBO & Company Rights Agreement.
                   ON MARCH 26, 1991, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 2-92030):
 *4         --     HBO & Company Nonqualified Stock Option Plan, as amended.
                   ON MARCH 27, 1991, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 33-12051):
 *4         --     HBO & Company 1986 Employee Nonqualified Stock Option Plan, as amended.
                   ON AUGUST 12, 1993, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 33-67300):
 *4         --     HBO & Company 1993 Stock Option Plan for Nonemployee Directors.
                   ON JUNE 14, 1994, AS PART OF ITS FORM 8-K REPORT DATED JUNE 13, 1994, AS AMENDED
                    BY FORM 8-KA DATED JUNE 30, 1994 AND FILED WITH THE COMMISSION ON JULY 1, 1994:
  2         --     Asset Purchase Agreement among IBAX Healthcare Systems, Baxter Healthcare
                    Corporation, International Business Machines Corporation, Baxter Systems, Inc.,
                    HCPG Corporation, HBO & Company and HBO & Company of Georgia dated May 31,
                    1994.
                   ON JULY 20, 1994, AS PART OF THE FORM S-4 REGISTRATION STATEMENT DATED JULY 19,
                    1994, AS AMENDED BY AMENDMENT NO. 1 TO FORM S-4 DATED AUGUST 10, 1994, AND
                    FILED WITH THE COMMISSION ON AUGUST 11, 1994, AND FURTHER AMENDED BY AMENDMENT
                    NO. 2 TO FORM S-4 DATED AUGUST 10, 1994, AND FILED WITH THE COMMISSION AUGUST
                    11, 1994:
  2         --     Agreement of Merger dated June 30, 1994, by and among HBO & Company, HBO &
                    Company of Georgia and Serving Software, Inc.
  3         --     Amended Bylaws.
                   ON AUGUST 17, 1994, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 33-82962):
 *4         --     HBO & Company 1990 Executive Incentive Plan, as amended.
                   ON SEPTEMBER 15, 1994, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 33-84034):
 *4         --     1986 Incentive Stock Option Plan of Serving Software, Inc.
                   ON MARCH 17, 1995, AS PART OF ITS FORM 10-K FOR THE YEAR ENDED DECEMBER 31,
                    1994:
 *4         --     Chief Executive Officer Incentive Plan.
                   ON MAY 9, 1995, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 33-59173):
 *4         --     HBO & Company 1986 Nonqualified Stock Option Agreement, HBO & Company 1991
                    Nonqualified Stock Option Agreement 1 and HBO & Company 1991 Nonqualified Stock
                    Option Agreement 2.
</TABLE>
 
                                      II-3
<PAGE>
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                                               DESCRIPTION
- -------            --------------------------------------------------------------------------------
<S>         <C>    <C>
                   ON JUNE 23, 1995, AS PART OF ITS FORM 8-K DATED JUNE 23, 1995, AS AMENDED BY
                    FORM 8-KA DATED JULY 31, 1995, AND FILED WITH THE COMMISSION ON JULY 31, 1995,
                    AS FURTHER AMENDED BY FORM 8-KA2 DATED AUGUST 8, 1995 AND FILED WITH THE
                    COMMISSION ON AUGUST 8, 1995:
  2         --     Stock Purchase Agreement, dated as of May 16, 1995, among First Data
                    Corporation, FDC Health, Inc., First Data Health Systems Corporation, HBO &
                    Company, and HBO & Company of Georgia, as amended by letter agreement dated
                    June 17, 1995.
                   ON AUGUST 17, 1995, AS PART OF ITS FORM S-4 REGISTRATION STATEMENT DATED AUGUST
                    17, 1995, AS AMENDED BY AMENDMENT NO. 1 TO FORM S-4 DATED SEPTEMBER 1, 1995,
                    AND FILED WITH THE COMMISSION ON SEPTEMBER 1, 1995:
  2         --     Agreement of Merger dated July 14, 1995, by and among HBO & Company, HBO &
                    Company of Georgia and CliniCom Incorporated.
                   ON OCTOBER 5, 1995, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 33-63213):
 *4         --     1985 Employee Stock Option Plan of CliniCom Incorporated.
                   ON MARCH 13, 1996, AS PART OF ITS FORM 10-K FOR THE YEAR ENDED DECEMBER 31,
                    1995:
 *4         --     HBO & Company 1983 Employee Discount Stock Purchase Plan, as restated.
                   ON MAY 21, 1996, AS PART OF ITS FORM 8-K DATED MAY 21, 1996, AND FILED WITH THE
                    COMMISSION ON MAY 21, 1996:
  3(i)      --     Amended and Restated Certificate of Incorporation of Registrant.
</TABLE>
 
    (b) Financial Statement Schedules.
 
    No financial statement schedules are required to be filed herewith.
 
    (c) The opinion of Broadview Associates,  L.P. is included as Appendix B  to
the  Proxy  Statement/  Prospectus  contained in  Part  I  of  this Registration
Statement.
 
ITEM 22.  UNDERTAKINGS.
 
    (a) (i) The undersigned registrant  hereby undertakes that, for purposes  of
determining  any liability under the Securities Act  of 1933, each filing of the
registrant's annual report  pursuant to Section  13(a) or Section  15(d) of  the
Securities  Exchange  Act of  1934  (and, where  applicable,  each filing  of an
employee  benefit  plan's  annual  report  pursuant  to  Section  15(d)  of  the
Securities  Exchange  Act of  1934)  that is  incorporated  by reference  in the
registration statement  shall  be deemed  to  be a  new  registration  statement
relating  to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial BONA FIDE offering thereof.
 
        (ii) (1) The undersigned registrant  hereby undertakes as follows:  that
    prior  to  any  public  reoffering of  the  securities  registered hereunder
    through use of a prospectus which is a part of this registration  statement,
    by any person or party who is deemed to be an underwriter within the meaning
    of  Rule 145(c), the issuer undertakes  that such reoffering prospectus will
    contain the information called for by the applicable registration form  with
    respect  to  reofferings  by  persons who  may  be  deemed  underwriters, in
    addition to the information called for by the other items of the  applicable
    form.
 
           (2) The registrant undertakes that every prospectus (i) that is filed
       pursuant to paragraph (1) immediately preceding, or (ii) that purports to
       meet  the requirements  of Section  10(a)(3) of  the Act  and is  used in
       connection with an offering  of securities subject to  Rule 415, will  be
       filed  as a part of  an amendment to the  registration statement and will
       not be used until such amendment is effective, and that, for purposes  of
       determining any liability
 
                                      II-4
<PAGE>
       under  the  Securities Act  of 1933,  each such  post-effective amendment
       shall be  deemed to  be  a new  registration  statement relating  to  the
       securities  offered therein, and the offering  of such securities at that
       time shall be deemed to be the initial BONA FIDE offering thereof.
 
        (iii) Insofar  as  indemnification  for liabilities  arising  under  the
    Securities  Act  of  1933  may  be  permitted  to  directors,  officers  and
    controlling persons of the registrant pursuant to the foregoing  provisions,
    or  otherwise, the registrant  has been advised  that in the  opinion of the
    Securities and Exchange  Commission such indemnification  is against  public
    policy  as expressed  in the  Act and  is, therefore,  unenforceable. In the
    event that a claim for indemnification against such liabilities (other  than
    the  payment by the registrant  of expenses incurred or  paid by a director,
    officer or controlling person of the registrant in the successful defense of
    any action, suit  or proceeding) is  asserted by such  director, officer  or
    controlling  person in connection with  the securities being registered, the
    registrant will, unless in  the opinion of its  counsel the matter has  been
    settled   by  controlling  precedent,  submit  to  a  court  of  appropriate
    jurisdiction the  question whether  such indemnification  by it  is  against
    public  policy as  expressed in the  Act and  will be governed  by the final
    adjudication of such issue.
 
    (b) The undersigned registrant hereby undertakes to respond to requests  for
information  that is incorporated  by reference into  the prospectus pursuant to
Items 4, 10(b), 11, or  13 of this form, within  one business day of receipt  of
such  request, and  to send  the incorporated documents  by first  class mail or
other equally prompt  means. This  includes information  contained in  documents
filed subsequent to the effective date of the registration statement through the
date of responding to the request.
 
    (c)  The undersigned  registrant hereby undertakes  to supply by  means of a
post-effective amendment  all  information  concerning a  transaction,  and  the
company  being  acquired  involved therein,  that  was  not the  subject  of and
included in the registration statement when it became effective.
 
                                      II-5
<PAGE>
                                   SIGNATURES
 
    Pursuant to the requirements of the  Securities Act of 1933, the  Registrant
has duly caused this Amendment to the Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Atlanta, in
the State of Georgia, on the 17th day of July, 1996.
 
                                          HBO & COMPANY
 
                                          By:        /s/ CHARLES W. MCCALL
 
                                             -----------------------------------
                                                      Charles W. McCall
                                                PRESIDENT AND CHIEF EXECUTIVE
                                                           OFFICER
 
    Pursuant  to the requirements of the  Securities Act of 1933, this Amendment
to the Registration Statement has been signed below by the following persons  in
the capacities and on the dates indicated:
 
<TABLE>
<CAPTION>
SIGNATURE                       TITLE                                                   DATE
- ------------------------------  --------------------------------------------------  -------------
<S>                             <C>                                                 <C>
/s/ CHARLES W. MCCALL           Director, President and Chief Executive Officer     July 17, 1996
- ------------------------------   (Principal Executive Officer)
(Charles W. McCall)
 
/s/ JAY P. GILBERTSON           Senior Vice President -- Finance, Chief Financial   July 17, 1996
- ------------------------------   Officer, Principal Accounting Officer, Treasurer
(Jay P. Gilbertson)              and Assistant Secretary (Principal Financial
                                 Officer and Principal Accounting Officer)
 
                *               Chairman of the Board of Directors
- ------------------------------
(Holcombe T. Green, Jr.)
 
                *               Director
- ------------------------------
(Alfred C. Eckert III)
 
                *               Director
- ------------------------------
(Philip A. Incarnati)
 
                *               Director
- ------------------------------
(Alton F. Irby III)
 
                *               Director
- ------------------------------
(Gerald E. Mayo)
</TABLE>
 
                                      II-6
<PAGE>
<TABLE>
<CAPTION>
SIGNATURE                       TITLE                                                   DATE
- ------------------------------  --------------------------------------------------  -------------
<S>                             <C>                                                 <C>
                *               Director
- ------------------------------
(James V. Napier)
 
                *               Director
- ------------------------------
(Charles E. Thoele)
 
                *               Director
- ------------------------------
(Donald C. Wegmiller)
 
    By: /s/    CHARLES W.                                                           July 17, 1996
            MCCALL
- ------------------------------
     *Charles W. McCall,
       Attorney-in-Fact
 
      By: /s/     JAY P.                                                            July 17, 1996
          GILBERTSON
- ------------------------------
     *Jay P. Gilbertson,
       Attorney-in-Fact
</TABLE>
 
                                      II-7
<PAGE>
                               INDEX TO EXHIBITS
 
   
<TABLE>
<CAPTION>
EXHIBITS                                                                                        PAGE
- ---------                                                                                       ----
<S>           <C>                                                                               <C>
 2            Agreement of Merger dated May 18, 1996 by and among HBO & Company, HBO & Company
               of Georgia and CyCare Systems, Inc. (included as Appendix A to the Proxy
               Statement/Prospectus contained in Part I of this Registration Statement).
 5            Opinion of Jones, Day, Reavis & Pogue re legality.
 8            Opinion of Snell & Wilmer L.L.P. re tax matters.
23(a)         Consent of Arthur Andersen LLP.
23(b)         Consent of Ernst & Young LLP.
23(c)         Consent of Jones, Day, Reavis & Pogue (included in Exhibit 5).
23(d)         Consent of Snell & Wilmer L.L.P. (included in Exhibit 8).
23(e)         Consent of Broadview Associates LLC (included as Appendix B to the Proxy
               Statement/Prospectus contained in Part I of this Registration Statement).
24+           Power of Attorney (included in signature page).
99.1+         Letter Agreement, dated May 18, 1996, by and among HBO & Company, HBO & Company
               of Georgia and CyCare Systems, Inc.
99.2+         Letter Agreement, dated June 10, 1996, by and among HBO & Company, HBO & Company
               of Georgia and CyCare Systems, Inc.
99.3          Consulting Agreement, dated July 15, 1996, by and between HBO & Company of
               Georgia and Jim Houtz.
</TABLE>
    
 
- ------------------------
   
+ Previously filed.
    
<PAGE>
    The following exhibits filed with the Securities and Exchange Commission are
incorporated by reference as shown below.
 
<TABLE>
<CAPTION>
 EXHIBIT
  NUMBER                                           DESCRIPTION
- ----------  ------------------------------------------------------------------------------------------
<S>         <C>                                                                                         <C>
            ON MAY 13, 1981, AS PART OF ITS REGISTRATION STATEMENT ON FORM S-1 (REGISTRATION NUMBER
             2-72275):
  4(a)      Specimen forms of certificates for Common Stock of Registrant.
            ON FEBRUARY 15, 1991, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 2-75987):
 *4         HBO & Company 1981 Incentive Stock Option Plan, as amended.
            ON FEBRUARY 22, 1991, AS PART OF ITS FORM 8-K:
 *4         HBO & Company Rights Agreement.
            ON MARCH 26, 1991, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 2-92030):
 *4         HBO & Company Nonqualified Stock Option Plan, as amended.
            ON MARCH 27, 1991, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 33-12051):
 *4         HBO & Company 1986 Employee Nonqualified Stock Option Plan, as amended.
            ON AUGUST 12, 1993, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 33-67300):
 *4         HBO & Company 1993 Stock Option Plan for Nonemployee Directors.
            ON JUNE 14, 1994, AS PART OF ITS FORM 8-K REPORT DATED JUNE 13, 1994, AS AMENDED BY FORM
             8-KA DATED JUNE 30, 1994 AND FILED WITH THE COMMISSION ON JULY 1, 1994:
  2         Asset Purchase Agreement among IBAX Healthcare Systems, Baxter Healthcare Corporation,
             International Business Machines Corporation, Baxter Systems, Inc., HCPG Corporation, HBO
             & Company and HBO & Company of Georgia dated May 31, 1994.
            ON JULY 20, 1994, AS PART OF THE FORM S-4 REGISTRATION STATEMENT DATED JULY 19, 1994, AS
             AMENDED BY AMENDMENT NO. 1 TO FORM S-4 DATED AUGUST 10, 1994, AND FILED WITH THE
             COMMISSION ON AUGUST 11, 1994, AND FURTHER AMENDED BY AMENDMENT NO. 2 TO FORM S-4 DATED
             AUGUST 10, 1994, AND FILED WITH THE COMMISSION AUGUST 11, 1994:
  2         Agreement of Merger dated June 30, 1994, by and among HBO & Company, HBO & Company of
             Georgia and Serving Software, Inc.
  3         Amended Bylaws.
            ON AUGUST 17, 1994, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 33-82962):
 *4         HBO & Company 1990 Executive Incentive Plan, as amended.
            ON SEPTEMBER 15, 1994, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 33-84034):
 *4         1986 Incentive Stock Option Plan of Serving Software, Inc.
            ON MARCH 17, 1995, AS PART OF ITS FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 1994:
 *4         Chief Executive Officer Incentive Plan.
            ON MAY 9, 1995, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 33-59173):
 *4         HBO & Company 1986 Nonqualified Stock Option Agreement, HBO & Company 1991 Nonqualified
             Stock Option Agreement 1 and HBO & Company 1991 Nonqualified Stock Option Agreement 2.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
 EXHIBIT
  NUMBER                                           DESCRIPTION
- ----------  ------------------------------------------------------------------------------------------
<S>         <C>                                                                                         <C>
            ON JUNE 23, 1995, AS PART OF ITS FORM 8-K DATED JUNE 23, 1995, AS AMENDED BY FORM 8-KA
             DATED JULY 31, 1995, AND FILED WITH THE COMMISSION ON JULY 31, 1995, AS FURTHER AMENDED
             BY FORM 8-KA2 DATED AUGUST 8, 1995 AND FILED WITH THE COMMISSION ON AUGUST 8, 1995:
  2         Stock Purchase Agreement, dated as of May 16, 1995, among First Data Corporation, FDC
             Health, Inc., First Data Health Systems Corporation, HBO & Company, and HBO & Company of
             Georgia, as amended by letter agreement dated June 17, 1995.
            ON AUGUST 17, 1995, AS PART OF ITS FORM S-4 REGISTRATION STATEMENT DATED AUGUST 17, 1995,
             AS AMENDED BY AMENDMENT NO. 1 TO FORM S-4 DATED SEPTEMBER 1, 1995, AND FILED WITH THE
             COMMISSION ON SEPTEMBER 1, 1995:
  2         Agreement of Merger dated July 14, 1995, by and among HBO & Company, HBO & Company of
             Georgia and CliniCom Incorporated.
            ON OCTOBER 5, 1995, AS PART OF ITS FORM S-8 (REGISTRATION NUMBER 33-63213):
 *4         1985 Employee Stock Option Plan of CliniCom Incorporated.
            ON MARCH 13, 1996, AS PART OF ITS FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 1995:
 *4         HBO & Company 1983 Employee Discount Stock Purchase Plan, as restated.
            ON MAY 21, 1996, AS PART OF ITS FORM 8-K DATED MAY 21, 1996, AND FILED WITH THE COMMISSION
             ON MAY 21, 1996:
  3(i)      Amended and Restated Certificate of Incorporation of Registrant.
</TABLE>

<PAGE>

                                                                  EXHIBIT 5

                          Jones, Day, Reavis & Pogue
                          3500 One Peachtree Center
                            303 Peachtree Street
                          Atlanta, Georgia 30308-3242


   
                                  July 17, 1996
    

HBO & Company
301 Perimeter Center North
Atlanta, Georgia 30346

Gentlemen:
   
     We have acted as counsel to HBO & Company, a Delaware corporation (the 
"Company"), in connection with the registration of 5,060,440 shares of Common 
Stock, $.05 par value per share, of the Company (the "Shares"), to be issued 
by the Company pursuant to a Registration Statement on Form S-4 (File No. 
333-5663) (the "Registration Statement"), filed with the Securities and 
Exchange Commission to which this opinion appears as Exhibit 5.
    
     We have examined originals or certified or photostatic copies of such 
records of the Company, certificates of officers of the Company, and public 
officials and such other documents as we have deemed relevant or necessary as 
the basis of the opinion set forth below in this letter. In such examination, 
we have assumed the genuineness of all signatures, the conformity to original 
documents submitted as certified or photostatic copies, and the authenticity 
of originals of such latter documents. Based on the foregoing, we are of the 
following opinion:

     The Shares have been duly authorized and, when issued by the Company,
     will be validly issued, fully paid and nonassessable.

     We hereby consent to the filing of this opinion as Exhibit 5 to the 
Registration Statement and the reference to this Firm under the heading 
"Certain Legal Matters" in the Proxy Statement/Prospectus constituting part 
of the Registration Statement.

                                        Sincerely,
   
                                        /s/ Jones, Day, Reavis & Pogue
    
                                        JONES, DAY, REAVIS & POGUE


<PAGE>


                                                                   EXHIBIT 8

                              SNELL & WILMER L.L.P
                               ONE ARIZONA CENTER
                           PHOENIX, ARIZONA 85004-0001


   
                                    July 17, 1996
    

CyCare Systems, Inc.
7001 North Scottsdale Road
Suite 1000
Scottsdale, Arizona 85253-3644

     Re:  Merger Opinion

Ladies and Gentlemen:

     We have acted as tax counsel to CyCare Systems, Inc., a Delaware 
corporation ("CyCare"), in connection with the Agreement of Merger dated May 
18, 1996 (the "Agreement") by and among CyCare, HBO & Company, a 
Delaware corporation ("HBOC"), and HBO & Company of Georgia, a Delaware 
corporation and wholly-owned subsidiary of Parent ("HBOC-GA"). Pursuant to 
the Agreement, CyCare will merge with and into HBOC-GA (the "Merger").
   
     Our opinion regarding certain of the federal income tax consequences of 
the Merger is required in connection with the filing with the Securities and 
Exchange Commission of a registration statement (the "Registration 
Statement") which includes the Proxy Statement-Prospectus relating to 
the Merger. Our opinion is also required pursuant to Section 7.6 of the 
Agreement as a condition to the consummation of the Merger.
    
     Except as otherwise provided, capitalized terms referred to herein have 
the meanings set forth in the Agreement. All section references, unless 
otherwise indicated, are to the Internal Revenue Code of 1986, as amended 
(the "Code").

     For the purpose of rendering this opinion, we have examined (or will 
examine on or prior to the Effective Time of the Merger) and are relying (or 
will rely) upon (without any independent investigation or review thereof) the 
truth and accuracy, at all relevant times, of the statements, covenants,



<PAGE>

representations and warranties contained in the following documents:

     1.   The Agreement.

     2.   Representations made by us to CyCare in a letter reproduced as 
Exhibit A hereto.

     3.   Representations made to us by HBOC and HBOC-GA in a letter 
reproduced as Exhibit B hereto.

     4.   Representations made in that certain Continuity of Interest 
Certificate executed by Jim H. Houtz.

     5.   Such other instruments and documents related to the formation, 
organization, and operation of CyCare, HBOC, and HBOC-GA, and/or to the 
consummation of the Merger and the transactions contemplated thereby as we 
have deemed necessary or appropriate.

     In connection with rendering this opinion, we have assumed that:

     1.   Original documents (including signatures) are authentic, documents 
submitted to us as copies conform to the original documents, and there has 
been (or will be by the Effective Time of the Merger) due execution and 
delivery of all documents where due execution and delivery are prerequisites 
to effectiveness thereof.

     2.   The Merger will be effective under the laws of Delaware.

     3.   At the Effective Time of the Merger, no outstanding indebtedness of 
CyCare will represent equity for tax purposes and no outstanding equity of 
CyCare, HBOC, or HBOC-GA will represent indebtedness for tax purposes.

     Based on our examination of the foregoing items and subject to the 
assumptions, exceptions, limitations, and qualifications set forth herein, we 
are of the opinion that, for federal income tax purposes, the Merger will 
qualify as a "reorganization" as defined in Section 368(a) of the Code.

     Assuming that the Merger will qualify as a "reorganization" within the 
meaning of Section 368(a) and subject to the assumptions, exceptions, 
limitations, and qualifications set forth herein, the following are among the 
federal income tax consequences of the Merger:

     a.   No gain or loss will be recognized by CyCare as a result of the 
consummation of the Merger.


<PAGE>

     b.   No gain or loss will be recognized by a CyCare stockholder upon the 
exchange of shares of CyCare Common Stock for shares of HBOC Stock 
pursuant to the Merger, except on the receipt of cash in lieu of a fractional 
share interest in HBOC Stock.

     In addition to the assumptions set forth above, this opinion is 
subject to the exceptions, limitations, and qualifications set forth below.

     1.   This opinion represents and is based upon our best judgment 
regarding the application of federal income tax laws arising under the Code, 
existing judicial decisions, administrative regulations, and published 
rulings and procedures. Our opinion is not binding upon the Internal Revenue 
Service or the courts, and there is no assurance that the Internal Revenue 
Service will not successfully assert a contrary position. Furthermore, no 
assurance can be given that future legislative, judicial, or administrative 
changes, on either a prospective or retroactive basis, would not adversely 
affect the accuracy of the conclusions stated herein. Nevertheless, we 
undertake no responsibility to advise you of any new developments in the 
application or interpretation of the federal income tax laws.

     2.   This opinion addresses only the classification of the Merger as a 
reorganization under Section 368(a) of the Code and the consequences of the 
Merger as described above, and does not address any other federal or any 
state, local, or foreign tax consequences that may result from the Merger or 
any other transaction (including any transaction undertaken in connection 
with the Merger). Further, this opinion does not address the tax consequences 
of the Merger that may be relevant to particular classes of CyCare 
stockholders subject to special treatment under the federal income tax laws 
such as dealers in securities, shareholders subject to the alternative 
minimum tax, foreign persons, banks and other financial institutions, 
insurance companies, tax-exempt organizations, and holders of shares acquired 
upon exercise of stock options or in other compensatory transactions, if any.

     3.   No opinion is expressed as to any transaction other than the 
Merger as described in the Agreement or to any transaction whatsoever, 
including the Merger, if all the transactions described in the Agreement are 
not consummated in accordance with the terms of the Agreement and without 
waiver or breach of any material provision thereof or if all of the 
representations, warranties, statements and assumptions upon which we relied 
are not true and accurate at all relevant times. In the event any one of the 
statements, representations, warranties, or assumptions upon which we have 
relied to issue this opinion is incorrect, our opinion might be adversely 
affected and may not be relied upon.


<PAGE>

     4.   The opinion set forth herein is intended solely for the purpose of 
including this opinion as an exhibit to the Registration Statement and is 
intended solely for your benefit; it may not be relied upon for any other 
purpose or by any other person or entity, and may not be made available to 
any other person or entity without our prior written consent.


                                         Yours truly,

   
                                         /s/ Snell & Wilmer L.L.P.
    

<PAGE>
                                                                   EXHIBIT 23(a)
 
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
As independent public accountants, we hereby consent to the incorporation by
reference in this registration statement of our reports dated February 6, 1996
incorporated by reference in HBO & Company's Form 10-K for the year ended
December 31, 1995 and to all references to our firm included in this
registration statement.
 
                                          /s/ ARTHUR ANDERSEN LLP
                                          --------------------------------------
                                          ARTHUR ANDERSEN LLP
 
   
Atlanta, Georgia
July 17, 1996
    

<PAGE>
                                                                   EXHIBIT 23(b)
 
                        CONSENT OF INDEPENDENT AUDITORS
 
   
We consent to the reference to our firm under the caption "Experts" and to the
use of our report dated February 14, 1996 with respect to the consolidated
financial statements of CyCare Systems, Inc. incorporated by reference in its
Annual Report (Form 10-K) for the year ended December 31, 1995 and the related
financial statement schedules included therein, filed with the Securities and
Exchange Commission incorporated by reference herein in Amendment No. 1 to the
Registration Statement (Form S-4 No. 333-5663) and related Prospectus of HBO &
Company for the registration of shares of its common stock.
    
 
   
                                          /s/ ERNST & YOUNG LLP
                                          --------------------------------------
                                          Ernst & Young LLP
    
 
   
Phoenix, Arizona
July 17, 1996
    

<PAGE>

                              CONSULTING AGREEMENT


     CONSULTING AGREEMENT (this "Agreement") made and entered into as of July 
15, 1996 to be effective on September 1, 1996, by and between HBO & COMPANY 
OF GEORGIA, a Delaware corporation (the "Company"), and JIM H. HOUTZ 
("Consultant").

     WHEREAS, Consultant is a founder of Cycare Systems, 
Inc. ("Cycare") and has been its CEO for over twenty-five (25) years; and

     WHEREAS, Company has acquired Cycare; and

     WHEREAS, Company and Consultant mutually agree that it is in Company's 
best interest for Consultant to terminate his full-time employment 
relationship with Cycare and perform consulting services for Company for a 
twelve (12) month period after the acquisition of Cycare has been completed; 
and

     WHEREAS, Company and Consultant agree that at the end of this twelve 
(12) month period, Consultant shall retire and commence receiving payments 
under the Retirement Agreement between Cycare and Consultant dated July 17, 
1992.

     NOW, THEREFORE, in consideration of the mutual promises and agreements 
herein made and contained, the parties hereto do hereby covenant, promise and 
agree as follows:

     1.   CONSULTING SERVICES.  If the Company requests, Consultant agrees to 
perform reasonable consulting services for Company. Such services shall not 
exceed one hundred (100) hours per month, and shall be limited to issues 
regarding medical group practice, future technology direction, EDI and 
customer relationships.

     2.   TERM.  The term of this Agreement shall commence on September 1, 
1996 and shall end twelve (12) months thereafter. 

     3.   PAYMENTS.  Consultant shall be paid Four Hundred Twenty-Seven 
Thousand Dollars ($427,000) for the term of this Agreement. This amount 
shall be paid as follows:

          (a)  Consultant shall receive four (4) monthly payments on the 
first business day of September, October, November and December, 1996, in an 
amount equal to one-fourth (1/4) of the difference between Four Hundred 
Twenty-Seven Thousand


<PAGE>

Dollars ($427,000) and the amount of W-2 compensation paid to Consultant for 
the period between January 1, 1996 and the date that the Company acquires 
Cycare.

          (b)  Consultant shall receive eight (8) monthly payments on the 
first business day of January through August, 1997, in an amount equal to 
one-eighth (1/8) of the difference between Four Hundred Twenty-Seven Thousand 
Dollars ($427,000) and the amount that was paid to Consultant under Section 
3(a) above. 

     4.   FRINGE BENEFITS.  During the term of this Agreement, Company shall 
continue to provide Consultant with the fringe benefits he received for the 
twelve (12) month period immediately preceding the commencement of this 
Agreement.

     5.   DEATH OF CONSULTANT.  If Consultant dies prior to the end of the 
term of this Agreement, any remaining payments due hereunder pursuant to 
Section 3 hereof shall be paid to his designated beneficiary on the dates 
such payments would have been paid to the Consultant under Section 3 hereof.  

     6.   CONSULTING FOR OTHER CORPORATIONS.  Subject to the terms of the 
Restrictive Covenant between Consultant and the Company, Consultant shall not 
be prevented from performing consulting services for other corporations 
during the term of this Agreement.

     7.   NO SET-OFF.  The Company's set-off rights shall be determined as 
follows:

          (a)  The Company's obligation to make the payments provided for in 
this Agreement prior to January 1, 1997 under Section 3(a) hereof shall not 
be affected by any set-off, counterclaim, recoupment defense or other claim 
or action which the Company may have against the Consultant. 

          (b)  If the Company has a right of set-off, counterclaim, 
recoupment defense or other claim or action against the Consultant, it may 
exercise such rights against its obligation to Consultant under Section 3(b) 
hereof.

     8.   RETIREMENT.  At the end of the term of this Agreement, Consultant 
shall retire and commence receiving monthly retirement benefits under the 
terms and conditions of the Retirement Agreement between Consultant and 
Cycare dated July 17, 1992.

     9.   MITIGATION OF DAMAGES; NO SET-OFF; DISPUTE RESOLUTION.  If there 
shall be any dispute between the Company and Consultant under this Agreement, 
the dispute shall be resolved in accordance with the dispute resolution 
procedures set forth in Exhibit A hereto, the provisions of which are 
incorporated as a part hereof, and the parties hereto hereby agree that such 
dispute resolution procedures shall be the exclusive method for resolution of 
disputes under this Agreement.  In the event of a dispute hereunder, the 
Company shall pay all amounts, and provide all benefits, to Consultant and/or 
Consultant's family or other beneficiaries, as the case may be, that the 
Company would be required to pay or provide

<PAGE>

hereunder; provided, however, that the Company shall not be required to pay 
any disputed amounts pursuant to this Section 9 except upon receipt of a 
written undertaking by or on behalf of Consultant (and/or Consultant's family 
or other beneficiaries, as the case may be) to repay, with interest at the 
short term Applicable Federal Rate in effect for each month that a disputed 
payment was made to Consultant, as soon as practicable after completion of 
the dispute resolution all such amounts to which Consultant (or Consultant's 
family or other beneficiaries, as the case may be) is ultimately adjudged not 
to be entitled with respect to the payment of such disputed amount(s).

     10.  SUCCESSORS; BINDING AGREEMENT.  This Agreement shall be binding 
upon any successor to the Company and shall inure to the benefit of and be 
enforceable by Consultant's personal or legal representatives, beneficiaries, 
designees, executors, administrators, heirs, distributees, devisees and 
legatees.

     11.  MODIFICATION; NO WAIVER.  This Agreement may not be modified or 
amended except by an instrument in writing signed by the parties hereto.  No 
term or condition of this Agreement shall be deemed to have been waived, nor 
shall there be any estoppel against the enforcement of any provision of this 
Agreement, except by written instrument by the party charged with such waiver 
or estoppel.  No such written waiver shall be deemed a continuing waiver 
unless specifically stated therein, and each such waiver shall operate only 
as to the specific term or condition waived and shall not constitute a waiver 
of such term or condition for the future or as to any other term or condition.

     12.  SEVERABILITY.  The covenants and agreements contained herein are 
separate and severable and the invalidity or unenforceability of any one or 
more of such covenants or agreements, if not material to the employment 
arrangement that is the basis for this Agreement, shall not affect the 
validity or enforceability of any other covenant or agreement contained 
herein.  

     13.  NOTICES.  All the notices and other communications required or 
permitted hereunder shall be in writing and shall be delivered personally or 
sent by registered or certified mail, return receipt requested, to the 
parties hereto at the following addresses:

               If to the Company, to it at:

               HBO & COMPANY OF GEORGIA
               301 Perimeter Center North
               Atlanta, Georgia 30346
               Attn:  Chief Financial Officer

               If Consultant, to him at:

               JIM H. HOUTZ


<PAGE>

               7033 East Belmont Avenue
               Paradise Valley, Arizona 85253
               Gilbert, Arizona 85254


<PAGE>

     14.  ASSIGNMENT.  This Agreement and any rights hereunder shall not be 
assignable by either party without the prior written consent of the other 
party except as otherwise specifically provided for herein.

     15.  ENTIRE UNDERSTANDING.  This Agreement (together with the Exhibit 
incorporated as a part hereof) constitutes the entire understanding between 
the parties hereto with respect to Consultant's consulting responsibilities 
to the Company during the twelve (12) month term of this Agreement, and no 
agreement, representation, warranty or covenant has been made by either party 
except as expressly set forth herein.  

     16.  CONSULTANT'S REPRESENTATIONS.  Consultant represents and warrants 
that neither the execution and delivery of this Agreement nor the performance 
of his duties hereunder violates the provisions of any other agreement to 
which he is a party or by which he is bound.

     17.  GOVERNING LAW.  This Agreement shall be construed in accordance 
with and governed for all purposes by the laws of the State of Arizona 
applicable to contracts executed and wholly performed within such state.

     18.  HEADINGS.  The headings and paragraphs herein are included solely 
for convenience of reference and shall not control the meaning or 
interpretation of any provision of this Agreement.


<PAGE>


     IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement 
as of the day and year first above written.

                                       COMPANY:

                                       HBO & COMPANY OF GEORGIA



                                       By: /s/ JAY GILBERTSON
                                          ------------------------------------
                                       Name:  Jay Gilbertson

                                       Title:  Chief Financial Officer



                                       CONSULTANT:

                                       JIM H. HOUTZ



                                       /s/ JIM H. HOUTZ
                                       ---------------------------------------
                                       Jim H. Houtz


<PAGE>


                                    EXHIBIT A

                          DISPUTE RESOLUTION PROCEDURES


     A.   If a controversy should arise which is covered by Section 9, then 
not later than thirty (30) days from the date of the event which is the 
subject of dispute either party may serve on the other a written notice 
specifying the existence of such controversy and setting forth in reasonably 
specific detail the grounds thereof ("Notice of Controversy"); PROVIDED THAT, 
in any event, the other party shall have at least thirty (30) days from and 
after the date of the Notice of Controversy to serve a written notice of any 
counterclaim ("Notice of Counterclaim").  The Notice of Counterclaim shall 
specify the claim or claims in reasonably specific detail.  If the Notice of 
Controversy or the Notice of Counterclaim, as the case may be, is not served 
within the applicable period, the claim set forth therein will be deemed to 
have been waived, abandoned and rendered unenforceable.

     B.   Following receipt of the Notice of Controversy (or the Notice of 
Counterclaim, as the case may be), there shall be a three week period during 
which the parties will make a good faith effort to resolve the dispute 
through negotiation ("Period of Negotiation").  Neither party shall take any 
action during the Period of Negotiation to initiate arbitration proceedings.

     C.   If the parties should agree during the Period of Negotiation to 
mediate the dispute, then the Period of Negotiation shall be extended by an 
amount of time to be agreed upon by the parties to permit such mediation.  In 
no event, however, may the Period of Negotiation be extended by more than 
five weeks or, stated differently, in no event may the Period of Negotiation 
be extended to encompass more than a total of eight (8) weeks.

     D.   If the parties agree to mediate the dispute but are thereafter 
unable to agree within one (1) week on the format and procedures for the 
mediation, then the effort to mediate shall cease, and the Period of 
Negotiation shall terminate four (4) weeks from the Notice of Controversy (or 
the Notice of Counterclaim, as the case may be).

     E.   Following the termination of the Period of Negotiation, the dispute 
(including the main claim and counterclaim, if any) shall be settled by 
arbitration, and judgment upon the award may be entered in any court having 
jurisdiction thereof.  The format and procedures of the arbitration are set 
forth below (referred to below as the "Arbitration Agreement").

     F.   A notice of intention to arbitrate ("Notice of Arbitration") shall 
be served within forty-five (45) days of the termination of the Period of 
Negotiation.  If the Notice of


<PAGE>

Arbitration is not served within this period, the claim set forth in the 
Notice of Controversy (or the Notice of Counterclaim, as the case may be) 
will be deemed to have been waived, abandoned and rendered unenforceable.

     G.   The arbitration, including the Notice of Arbitration, will be 
governed by the Commercial Rules of the American Arbitration Association 
except that the terms of this Arbitration Agreement shall control in the 
event of any difference or conflict between such Rules and the terms of this 
Arbitration Agreement.

     H.   The dispute resolver shall reach a decision on the merits on the 
basis of applicable legal principles as embodied in the law of the State of 
Arizona.

     I.   There shall be one dispute resolver, regardless of the amount in 
controversy.  The dispute resolver will be empowered to render an award and 
interim decisions and shall be a member of the bar of any of the fifty States 
of the United States or of the District of Columbia.  The dispute resolver 
shall be promptly appointed pursuant to Rule 13 of the Commercial Rules of 
the American Arbitration Association ("AAA").  If the dispute resolver has 
not been appointed within forty-five (45) days of the AAA's initial 
transmission of lists of potential arbitrators, then the AAA shall 
unilaterally designate the dispute resolver.

     J.   At the time of appointment and as a condition thereto, the dispute 
resolver will be apprised of the time limitations and other provisions of 
this Arbitration Agreement and shall indicate such dispute resolver's 
agreement to the Tribunal Administrator to comply with such provisions and 
time limitations.

     K.   During the thirty (30) day period following appointment of the 
dispute resolver, either party may serve on the other a request for limited 
numbers of documents directly related to the dispute.  Such documents will be 
produced within seven (7) days of the request.

     L.   Following the thirty (30) day period of document production, there 
will be a forty-five (45) day period during which limited depositions will be 
permissible.  Neither party will take more than five (5) depositions, and no 
deposition will exceed three (3) hours of direct testimony.

     M.   Disputes as to discovery or prehearing matters of a procedural 
nature shall be promptly submitted to the dispute resolver pursuant to 
telephone conference call or otherwise.  The dispute resolver shall make 
every effort to render a ruling on such interim matters at the time of the 
hearing (or conference call) or within five (5) business days thereafter.

     N.   Following the period of depositions, the arbitration hearing shall 
promptly commence.  The dispute resolver will make every effort to commence 
the hearing within


<PAGE>

thirty (30) days of the conclusion of the deposition period and, in addition, 
will make every effort to conduct the hearing on consecutive business days to 
conclusion.

     O.   An award will be rendered, at the latest, within one hundred twenty 
(120) days of the date of the Notice of Arbitration and within thirty (30) 
days of the close of the arbitration hearing.  The award shall set forth the 
grounds for the decision in reasonably specific detail.  The award shall be 
final and nonappealable except as provided in Arizona Revised Statutes 
Sections 12-1512 and 12-2101-01.



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