ENVOY CORP /TN/
S-3/A, 1998-08-05
COMPUTER PROCESSING & DATA PREPARATION
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<PAGE>   1
 
   
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON AUGUST 5, 1998
    
 
                                                      REGISTRATION NO. 333-52483
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                             ---------------------
   
                                AMENDMENT NO. 2
    
                                       TO
 
                                    FORM S-3
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                             ---------------------
 
                               ENVOY CORPORATION
             (Exact Name of Registrant as Specified in its Charter)
 
<TABLE>
<S>                                                    <C>
                      TENNESSEE                                              62-1575729
             (State or Other Jurisdiction                                 (I.R.S. Employer
          of Incorporation or Organization)                            Identification Number)
</TABLE>
 
          15 CENTURY BOULEVARD, SUITE 600, NASHVILLE, TENNESSEE 37214
                                 (615) 885-3700
              (Address, Including Zip Code, and Telephone Number,
       Including Area Code, of Registrant's Principal Executive Offices)
 
                             ---------------------
 
                               GREGORY T. STEVENS
                 VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY
                        15 CENTURY BOULEVARD, SUITE 600
                           NASHVILLE, TENNESSEE 37214
                                 (615) 885-3700
           (Name, Address, Including Zip Code, and Telephone Number,
                   Including Area Code, of Agent for Service)
 
                             ---------------------
 
                                   COPIES TO:
 
<TABLE>
<S>                                                    <C>
                   BOB F. THOMPSON                                      FREDERICK W. KANNER
                BASS, BERRY & SIMS PLC                                  DEWEY BALLANTINE LLP
              2700 FIRST AMERICAN CENTER                            1301 AVENUE OF THE AMERICAS
              NASHVILLE, TENNESSEE 37238                              NEW YORK, NEW YORK 10019
                    (615) 742-6200                                         (212) 259-8000
</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 only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box.  [ ]
     If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box.  [ ]
     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering.  [ ]
                                                             ------------
     If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]
                           ------------
     If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.  [ ]
 
                             ---------------------
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933 OR UNTIL THIS REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SECTION 8(A), MAY
DETERMINE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
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 JURISDICTION IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL
PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH
JURISDICTION.
 
   
                  SUBJECT TO COMPLETION, DATED AUGUST 5, 1998
    
PROSPECTUS
                                1,750,000 SHARES
 
                             (ENVOY CORPORATION LOGO)
                                  COMMON STOCK
                               ------------------
 
     All of the 1,750,000 shares (the "Shares") of Common Stock, no par value
per share (the "Common Stock"), of ENVOY Corporation ("ENVOY" or the "Company")
offered hereby are being offered by certain shareholders of the Company (the
"Selling Shareholders"). See "Selling Shareholders." The Company will not
receive any proceeds from the sale of the Common Stock offered hereby.
 
   
     The Common Stock is listed on The Nasdaq Stock Market's National Market
("The Nasdaq Stock Market") under the symbol "ENVY." The last reported sale
price of the Common Stock on The Nasdaq Stock Market on August 4, 1998 was
$35.00 per share. See "Price Range of Common Stock."
    
 
                               ------------------
 
     SEE "RISK FACTORS" BEGINNING ON PAGE 6 FOR A DISCUSSION OF CERTAIN FACTORS
THAT SHOULD BE CONSIDERED IN CONNECTION WITH AN INVESTMENT IN THE COMMON STOCK
OFFERED HEREBY.
                               ------------------
 
  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 PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.
 
<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------------------
                                                                              UNDERWRITING          PROCEEDS TO
                                                           PRICE TO           DISCOUNTS AND           SELLING
                                                            PUBLIC           COMMISSIONS(1)       SHAREHOLDERS(2)
- -------------------------------------------------------------------------------------------------------------------
<S>                                                   <C>                  <C>                  <C>
Per Share                                                      $                    $                    $
- -------------------------------------------------------------------------------------------------------------------
Total(3)                                                       $                    $                    $
- -------------------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------------------
</TABLE>
 
   (1) For information regarding indemnification of the Underwriters, see
       "Underwriting."
 
   (2) Before deducting expenses estimated at $        , of which $        is
       payable by the Company and $        is payable by the Selling
       Shareholders.
 
   (3) The Selling Shareholders have granted the Underwriters a 30-day option to
       purchase up to 262,500 additional shares of Common Stock on the same
       terms as set forth above solely to cover over-allotments, if any. See
       "Underwriting." If such option is exercised in full, the total Price to
       Public, Underwriting Discounts and Commissions and Proceeds to Selling
       Shareholders will be $        , $        and $        , respectively.
 
                               ------------------
 
     The shares of Common Stock are being offered by the several Underwriters
named herein, subject to prior sale, when, as and if accepted by them and
subject to certain conditions. It is expected that certificates for the shares
of Common Stock offered hereby will be available for delivery on or about
            , 1998, at the office of Smith Barney Inc., 333 West 34th Street,
New York, New York 10001.
 
                               ------------------
 
SALOMON SMITH BARNEY                                  MORGAN STANLEY DEAN WITTER
 
   
J.C. BRADFORD & CO.                                            HAMBRECHT & QUIST
    
 
   
                       LOEWENBAUM & COMPANY INCORPORATED
    
 
   
August   , 1998
    
<PAGE>   3
         As required by Rule 304 of Regulation S-T, the following is a
narrative description of the artwork and text that appear on the inside front
cover page of the Prospectus.

         A circular graph depicting the movement of information between
participants in the health care industry. The following text appears above the
graph: "ENVOY provides the connectivity required to move information between
participants in the health care industry." The following text appears below the
graph:

       Selected Current & Potential Health Care EDI Information Exchanges

<TABLE>
<CAPTION>
           Hospitals                              Payors                Physicians & Dentists                   Pharmacies
- --------------------------------       -----------------------      ------------------------------      ---------------------------
<S>                                    <C>                          <C>                                 <C>           
Claims*                                Claims*                      Eligibility*                        Eligibility*
Remittance*                            Patient Roster*              Referral Management*                Electronic Prescriptions
Patient Census                         Enrollment                   Lab Order                           Formulary
                                       Pre-admission                Medical/Patient Records             Just-In-Time Inventory*
                                                                    Remittance*

<CAPTION>

                                                                              Pharmacy Benefit
        Laboratories                           Patients                          Managers
   ---------------------------       ----------------------------       --------------------------
<S>                                  <C>                                <C> 
   Claims*                           Enrollment                         Claims*
   Referrals*                        Provider Directories               Formulary
   Results Reporting                 Patient Statements*
</TABLE>



* Indicates health care EDI exchanges currently offered by the Company.


<PAGE>   4
 
                           (MOVEMENT OF INFORMATION)
 
     CERTAIN PERSONS PARTICIPATING IN THIS OFFERING MAY ENGAGE IN TRANSACTIONS
THAT STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE PRICE OF THE COMMON STOCK
INCLUDING BY OVER-ALLOTMENT, ENTERING STABILIZING BIDS, EFFECTING COVERING
TRANSACTIONS OR IMPOSING PENALTY BIDS. FOR A DESCRIPTION OF THESE ACTIVITIES,
SEE "UNDERWRITING."
                                        2
<PAGE>   5
 
                               PROSPECTUS SUMMARY
 
     The following summary is qualified in its entirety by the more detailed
information and financial statements appearing elsewhere in this Prospectus or
incorporated herein by reference. Except as otherwise indicated, (i) all
references herein to "ENVOY" and the "Company" shall include the Company and its
wholly-owned subsidiaries; (ii) the Company's historical financial and other
statistical data included or incorporated by reference herein have been restated
to include the accounts and results of operations of XpiData, Inc., Professional
Office Services, Inc. and Automated Revenue Management, Inc. (collectively, the
"ExpressBill Companies") as a result of the Company's business combinations with
the ExpressBill Companies completed in February 1998, which were accounted for
as poolings of interests; and (iii) all information contained in this Prospectus
assumes no exercise of the Underwriters' over-allotment option. Investors should
carefully consider the information set forth under the heading "Risk Factors."
 
                                  THE COMPANY
 
     ENVOY is a leading provider of electronic data interchange ("EDI") and
transaction processing services to participants in the health care market,
including pharmacies, physicians, hospitals, dentists, billing services,
commercial insurance companies, managed care organizations, state and federal
governmental agencies and others. The Company provides health care EDI services
on a real-time and batch-processing basis by utilizing proprietary computer and
telecommunications software and microprocessor technology. ENVOY is one of the
largest processors of electronic real-time pharmacy and commercial third-party
payor batch transactions in the United States based upon annual transaction
volume. Through the Company's recently completed business combinations with the
ExpressBill Companies, the Company believes that it has the largest patient
statement processing and printing services business in the United States,
processing more than 100 million patient statements annually. ENVOY's
transaction network, which processed approximately 984.3 million transactions in
the 12 months ended March 31, 1998, consisted of approximately 200,000
physicians, 35,000 pharmacies, 42,000 dentists, 4,600 hospitals and 811 payors,
including approximately 46 Blue Cross Blue Shield Plans, 59 Medicare Plans and
38 Medicaid Plans as of May 31, 1998.
 
     There are many types of transactions, information exchanges and other
communications that occur between participants in the health care industry.
Although the majority of these transactions traditionally have been paper based
and manually processed, technological advances and the evolution of electronic
transaction processing in recent years have created a framework for automation
which is achieving growing acceptance in the health care market. According to
the Health Data Directory, the percentage of health care claims filed
electronically has increased from 41% in 1993 to 60% in 1997. As health care
industry participants look for ways to lower costs, improve decision-making and
be more competitive, the Company anticipates that more payors, providers and
purchasers of health care services will become linked electronically. In
addition to the adjudication of health care claims, health care participants
need, among other things, information and services relating to eligibility,
encounters, referrals, pre-admission certifications, electronic prescriptions,
credit card services, patient statements and lab ordering. The Company believes
that, once an intermediary, such as ENVOY, has established electronic
connectivity between health care payors and providers, these value added
transaction services create opportunities for additional revenues without
significant costs. The Company believes that private and governmental efforts to
contain health care costs, the growth of managed care and the creation of
various health care alliances, as well as other changes in the health care
delivery mechanisms, will accelerate the transition to health care EDI.
 
     ENVOY's strategy is to maintain and enhance its leadership position in the
health care EDI and transaction processing industry by (i) leveraging its
current strengths in the health care EDI and transaction processing industry,
(ii) expanding its product and service offerings, (iii) extending its EDI and
transaction processing network within the health care industry and (iv) pursuing
strategic acquisitions. The Company believes that its reputation for providing
quality and cost-effective services and products and its extensive EDI network
enhance ENVOY's ability to attract and retain customers.
 
                                        3
<PAGE>   6
 
     As part of its strategy to maintain and enhance its leadership position in
the health care EDI and transaction processing industry, the Company has
completed several recent business combinations, including the following:
 
     - National Electronic Information Corporation.  In March 1996, the Company
       acquired all the issued and outstanding capital stock of National
       Electronic Information Corporation ("NEIC"). With the acquisition of
       NEIC, the Company became one of the largest processors of commercial
       third-party payor claims based on the number of transactions processed.
       The NEIC acquisition significantly enhanced the Company's transaction
       network by giving ENVOY the largest number of direct electronic
       connections to commercial third-party payors in the health care EDI and
       transaction processing industry. The aggregate purchase price for NEIC
       was approximately $94.3 million, including fees, expenses and other costs
       associated with the acquisition. The NEIC acquisition was financed
       through equity and debt financing, including the issuance of 3,730,233
       shares of the Company's Series B Convertible Preferred Stock, no par
       value per share (the "Series B Preferred Stock"), 333,333 shares of
       Common Stock, borrowings of approximately $43.4 million under the
       Company's credit facilities and $5.8 million of the Company's available
       cash.
 
     - Healthcare Data Interchange Corporation.  In August 1997, the Company
       completed the acquisition of all the issued and outstanding capital stock
       of Healthcare Data Interchange Corporation ("HDIC"), the health care EDI
       subsidiary of Aetna U.S. Healthcare, Inc. ("AUSHC"), for approximately
       $36.4 million in cash and the assumption of approximately $14.8 million
       in liabilities. The cash portion of the purchase price was financed
       through the Company's available cash. In connection with the acquisition,
       the parties entered into a long-term services agreement under which AUSHC
       has agreed to use the Company as its single source EDI technology partner
       to process all AUSHC electronic health care transactions.
 
     - ExpressBill Companies.  In February 1998, the Company completed business
       combinations with the ExpressBill Companies for an aggregate of 3.5
       million shares of Common Stock. The ExpressBill Companies' patient
       statement services include electronic data transmission and formatting,
       statement printing and mailing services for health care providers and
       practice management system vendors. The addition of the ExpressBill
       Companies' patient statement services further expands the breadth of
       ENVOY's product and service offerings to health care providers.
 
     - Synergy Health Care, Inc.  In May 1998, the Company acquired all the
       issued and outstanding capital stock of Synergy Health Care, Inc.
       ("Synergy"), which provides health care information products and services
       to participants in the health care market, for $10.0 million in cash. The
       purchase price was financed through the Company's available cash.
       Synergy's products and services include health care data warehousing and
       analysis, performance tracking, patient studies and disease management
       support. This acquisition is anticipated to allow ENVOY to offer new data
       analysis services to certain of its existing customers, as well as to
       various other participants in the health care market.
 
     The Company's executive offices are located at 15 Century Boulevard, Suite
600, Nashville, Tennessee 37214, and its telephone number at that location is
(615) 885-3700.
 
                                  THE OFFERING
 
   
<TABLE>
<S>                                                           <C>
Common Stock offered by the Selling Shareholders............  1,750,000 shares
Common Stock outstanding after the offering(1)..............  21,196,354 shares
Use of proceeds.............................................  All proceeds from the offering
                                                              will go to the Selling
                                                              Shareholders.
The Nasdaq Stock Market symbol..............................  ENVY
</TABLE>
    
 
- ---------------
 
   
(1) Excludes (i) 3,757,426 shares of Common Stock issuable upon the exercise of
    options granted pursuant to the Company's existing stock option plans, of
    which 1,185,926 shares were exercisable at a weighted average exercise price
    per share of $6.55, as of July 31, 1998 and (ii) 2,800,000 shares of Common
    Stock issuable upon conversion of the Series B Preferred Stock.
    
                                        4
<PAGE>   7
 
                      SUMMARY FINANCIAL AND OPERATING DATA
           (IN THOUSANDS, EXCEPT PER SHARE AND OTHER OPERATING DATA)
 
<TABLE>
<CAPTION>
                                                                                                 THREE MONTHS
                                                                 YEAR ENDED DECEMBER 31,        ENDED MARCH 31,
                                                              ------------------------------   -----------------
                                                              1995(1)      1996       1997      1997      1998
                                                              --------   --------   --------   -------   -------
<S>                                                           <C>        <C>        <C>        <C>       <C>
STATEMENTS OF OPERATIONS DATA:
Revenues....................................................  $34,197    $ 90,572   $137,605   $30,763   $42,524
Operating costs and expenses:
  Cost of revenues..........................................   18,967      43,500     64,304    14,380    19,397
  Selling, general and administrative expenses..............   11,156      24,631     32,734     7,760    10,218
  Research and development expenses.........................    1,466       1,779      2,135       842       622
  Depreciation and amortization expenses(2).................    2,725      19,508     26,095     6,073     6,993
  Merger and facility integration costs(3)..................       --       4,664         --        --        --
  Write-off of acquired in-process technology(4)............       --      30,700     38,000     3,000        --
  EMC losses................................................       --         540         --        --        --
                                                              -------    --------   --------   -------   -------
Operating income (loss).....................................     (117)    (34,750)   (25,663)   (1,292)    5,294
Other income (expense):
  Interest income...........................................      380       1,032      1,312       453       145
  Interest expense..........................................     (659)     (2,872)    (1,577)     (386)     (437)
                                                              -------    --------   --------   -------   -------
Income (loss) from continuing operations before income taxes
  and loss in investee......................................     (396)    (36,590)   (25,928)   (1,225)    5,002
Provision (benefit) for income taxes........................      (50)      1,717     (5,218)      739     2,744
Loss in investee............................................   (1,776)         --         --        --        --
                                                              -------    --------   --------   -------   -------
Income (loss) from continuing operations....................  $(2,122)   $(38,307)  $(20,710)  $(1,964)  $ 2,258
                                                              =======    ========   ========   =======   =======
Income (loss) per common share from continuing operations
  assuming dilution(5)......................................  $ (0.14)   $  (3.22)  $  (1.05)  $ (0.10)  $  0.09
                                                              =======    ========   ========   =======   =======
Weighted average shares outstanding assuming dilution.......   14,739      16,519     19,686    18,976    25,102
                                                              =======    ========   ========   =======   =======
OTHER OPERATING DATA:
  Transactions (in millions)................................    403.0       665.5      912.9     212.4     283.8
</TABLE>
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31,   DECEMBER 31,   MARCH 31,
                                                                  1996           1997         1998
                                                              ------------   ------------   ---------
<S>                                                           <C>            <C>            <C>
BALANCE SHEET DATA:
Working capital.............................................    $ 47,541       $ 18,027     $ 25,207
Total assets................................................     140,357        137,523      142,656
Long-term debt, less current portion........................       8,926            527          231
Preferred stock.............................................      55,021         55,021       41,300
Total shareholders' equity..................................     108,414         97,559       99,967
</TABLE>
 
- ---------------
 
(1) The Company was incorporated in August 1994 as a wholly-owned subsidiary of
    ENVOY Corporation, a Delaware corporation which was formed in 1981 (the
    "Predecessor"). The Predecessor was formed to develop and market electronic
    transaction processing services for the financial services and health care
    markets. In June 1995, in order to facilitate the transfer of the financial
    services business to First Data Corporation ("First Data"), the assets and
    liabilities of the Predecessor associated with the health care business were
    transferred to the Company. The Company was spun-off to shareholders through
    a stock dividend distribution, and the Predecessor was merged into First
    Data. The Company's financial statements incorporated by reference herein
    include financial information for the Predecessor through June 1995, with
    the financial services business shown as a discontinued operation. The above
    amounts exclude the results of discontinued operations as a result of the
    Predecessor's merger with First Data.
(2) Depreciation and amortization expenses primarily relate to acquisitions and
    includes amortization of goodwill and identifiable intangible assets of
    $14.6 million and $20.0 million in 1996 and 1997, and $4.6 million and $5.3
    million in the three month periods ended March 31, 1997 and 1998,
    respectively. As of March 31, 1998, amortization expense related to
    acquisitions was expected to be approximately $19.1 million in 1998, $7.9
    million in 1999 and $4.7 million in 2000. Although goodwill associated with
    the acquisition of NEIC will become fully amortized during the first quarter
    of 1999, the consummation of additional acquisitions may significantly
    increase future amortization costs.
(3) The 1996 results include expenses of $4.7 million relating to merger and
    facility integration costs in conjunction with the NEIC and Teleclaims, Inc.
    ("Teleclaims") acquisitions.
(4) Results for the years ended December 31, 1996 and 1997 and the three months
    ended March 31, 1997 include expenses of $30.0 million, $35.0 million and
    $3.0 million, related to the write-off of acquired in-process technology in
    conjunction with the acquisitions of NEIC, HDIC and Diverse Software
    Solutions, Inc. ("DSS"), respectively.
(5) Net loss per common share for the year ended December 31, 1996 has been
    restated to give effect to the beneficial conversion feature of the Series B
    Preferred Stock in accordance with EITF Topic D-60, "Accounting for the
    Issuance of Convertible Preferred Stock and Debt Securities with a
    Nondetachable Conversion Feature" ("EITF D-60"). The application of the
    beneficial conversion feature of the Series B Preferred Stock prescribed by
    EITF D-60, which was promulgated by the Securities and Exchange Commission
    (the "SEC") in March 1997 subsequent to the Company's initial accounting
    treatment relating to the issuance of the Series B Preferred Stock, requires
    that the difference between the market price of the Common Stock on the date
    of the Series B Preferred Stock purchase agreement ($14.75 per share) and
    the conversion price of the Series B Preferred Stock ($10.75 per share) be
    reflected as a preferred dividend in 1996. Accordingly, the Company's
    historical financial statements have been restated to reflect the aggregate
    effect of the beneficial conversion feature as a preferred dividend ($14.9
    million) resulting in a net loss per common share of $3.22 in 1996. The
    Company previously had reported a net loss per common share of $2.32 for
    1996.
 
                                        5
<PAGE>   8
 
                                  RISK FACTORS
 
     In addition to the other information included or incorporated by reference
in this Prospectus, the following risk factors should be considered carefully in
evaluating an investment in the Common Stock offered by this Prospectus.
Although the Company believes that the assumptions underlying the
forward-looking statements contained herein are reasonable, any of the
assumptions could be inaccurate, and therefore, there can be no assurance that
the forward-looking statements included herein will prove to be accurate. There
are many factors that may cause actual results to differ materially from those
indicated by the forward-looking statements, including, among others,
competitive pressures, changes in pricing policies, delays in product
development, business conditions in the marketplace, general economic conditions
and the various risk factors set forth below. In light of the significant
uncertainties inherent in the forward-looking statements included herein, the
inclusion of such information should not be regarded as a representation by the
Company that the objectives and plans of the Company will be achieved.
 
     Limited Operating History; Recent Losses.  The health care EDI and
transaction processing industry is relatively new, and the Company's operating
history is relatively limited. Although ENVOY was profitable during the first
quarter of fiscal 1998, ENVOY has experienced substantial net losses in recent
years, including a net loss of approximately $20.7 million for the year ended
December 31, 1997, and had an accumulated deficit of approximately $73.5 million
as of March 31, 1998. In order to achieve long-term profitability, the Company
must successfully implement its business strategy and increase its revenues,
while controlling expenses. There can be no assurance that the Company will
achieve long-term profitability.
 
     Financial Impact of Recent Acquisitions.  The Company has recently
completed several acquisitions, which have created a significant expansion of
ENVOY's overall business. As a result of the accounting treatment for these
acquisitions, including the acquisitions of NEIC in March 1996 and HDIC in
August 1997, the Company's results of operations have been negatively impacted.
A brief description of significant terms of the NEIC and HDIC acquisitions
follows:
 
   
          NEIC.  The Company acquired NEIC for approximately $94.3 million,
     including fees, expenses and other costs associated with the acquisition.
     In connection with the acquisition, the Company recognized a write-off of
     acquired in-process technology of approximately $30.0 million. As a result
     of the NEIC acquisition, the Company is amortizing $37.6 million of
     goodwill over a three year period, and such amortization will adversely
     affect the Company's results of operations through March 1999.
    
 
   
          HDIC.  The Company completed the acquisition of HDIC for approximately
     $36.4 million in cash and the assumption of approximately $14.8 million of
     liabilities. In addition, the Company and AUSHC simultaneously entered into
     a long-term services agreement under which AUSHC agreed to use the Company
     as its single source clearinghouse and EDI network for all AUSHC electronic
     health care transactions. The Company recorded approximately $16.1 million
     of goodwill and identifiable intangible assets related to the HDIC
     acquisition and is amortizing the related goodwill of $14.1 million over a
     period of 15 years. Also recorded as part of the HDIC acquisition was a
     write-off of acquired in-process technology of $35.0 million.
    
 
   
Amortization expense related to acquisitions is expected to be approximately
$19.1 million in 1998 and $7.9 million in 1999, including $3.8 million in the
three months ended March 31, 1999. The consummation of additional acquisitions
may significantly increase amortization costs and result in significant
write-offs of acquired in-process technology. The amounts allocated under
purchase accounting to developed technology and in-process technology in these
acquisitions involve valuations utilizing estimations of future revenues,
expenses, operating profit and cash flows. The actual revenues, expenses,
operating profit and cash flows from the acquired technology recognized in the
future may vary materially from such estimates.
    
 
     Acquisition Strategy; Impact on Operating Results; Need for Capital.  The
Company's strategy includes acquisitions of related health care information
businesses and other companies complementary to its business. The success of any
such acquisition will depend on many factors, including the Company's ability to
identify suitable acquisition candidates, the purchase price, the availability
and terms of financing, and management's ability to integrate effectively the
acquired services, technologies (including different transaction processing
systems) or businesses into the Company's operations. Significant competition
for acquisition opportunities
                                        6
<PAGE>   9
 
   
exists in the health care EDI and transaction processing industry, which may
significantly increase the costs of and decrease the opportunities for
acquisitions. Although ENVOY is actively pursuing potential acquisitions, there
can be no assurance that any acquisition will be consummated. Further, to the
extent that the Company is able to consummate an acquisition, no assurance can
be given that the Company will be able to operate any acquired business
profitably or otherwise successfully implement its expansion strategy. In that
regard, the Company has, in the past, experienced temporary declines in customer
service due to computer down time and inexperienced customer service
representatives in connection with the integration of certain acquired
businesses. Although the Company believes that it has resolved such problems and
that there has been no material adverse effect in the Company's operating
results to date, there can be no assurance that the Company will not experience
temporary declines in customer service in the future, which could materially
adversely affect the Company's business, operating results or financial
condition. ENVOY may finance future acquisitions through borrowings or the
issuance of debt or equity securities. Although the Company historically has
obtained financing on reasonable terms, there can be no assurances that future
lenders will extend credit, or extend credit on favorable terms. Further, any
issuance of equity securities could have a dilutive effect on the holders of
Common Stock. Such acquisitions may result in the recognition by the Company of
significant goodwill and other intangible assets, increases in the amount of
depreciation and amortization expense and write-offs of acquired in-process
technology, all of which could adversely affect the Company's operating results
in future periods. The amounts allocated under purchase accounting to developed
technology (which must be amortized) and in-process technology (which must be
expensed) involve valuations utilizing estimations of future revenues, expenses,
operating profit and cash flows. The actual revenues, expenses, operating profit
and cash flows from such technology may vary materially from such estimates.
    
 
   
     Customer Concentration.  Primarily as a result of the HDIC acquisition, the
Company has one customer, AUSHC, that accounted for approximately 12% of the
Company's consolidated revenues for 1997. Prior to 1997, no customer accounted
for more than 10% of the Company's revenues. Concurrently with the HDIC
acquisition, the Company and AUSHC entered into a ten year services agreement
which requires AUSHC to use the Company as its single source clearinghouse and
EDI network for all AUSHC electronic health care transactions. The AUSHC
services agreement specifies performance criteria for the Company and contains
fixed fee pricing for the first five years of the agreement. In the event of an
uncured material default by either party, the AUSHC services agreement can be
terminated by the non-defaulting party prior to the expiration of its term on
180 days' notice. See "Business -- Customers." The Company believes that it is
currently in compliance in all material respects with the terms of the AUSHC
services agreement. Further consolidation in the health care industry is likely
to increase customer concentration and may increase the Company's dependency on
a limited number of customers. In addition, a significant portion of NEIC's
revenues has been generated by five major insurance company payors who were
shareholders of NEIC before its acquisition by ENVOY. Although each of these
carriers has continued to use the Company's services after the acquisition of
NEIC, they have no minimum transaction commitment to the Company in the future,
and there can be no assurance that the volume of business generated by these
payors will not decline or terminate. The termination of the AUSHC services
agreement or the loss of one or more other significant customers could have a
material adverse effect on the Company's business, operating results or
financial condition.
    
 
     Year 2000 Compliance.  The Year 2000 issue is primarily the result of many
computer programs and data structures' failure to include the century when
storing the representation for a year. During 1997, the Company developed and
began implementing a plan to ensure its computer systems will be Year 2000
compliant. An inventory of all relevant software and hardware was taken to
determine the state of compliance. Some systems require no changes because they
already conform to the 4-digit-year configuration which is the basis for the
Year 2000 issue. The Company intends to replace or modify the remaining systems
as needed to properly display dates and perform date arithmetic. The Company
commenced testing with customers and other third parties in the second quarter
of 1998 with completion expected in June 1999. In addition to validating the
Company's internal program changes, this testing will determine the readiness of
the Company's customers to deal with the Year 2000 issue in their own systems.
Where warranted, the Company may assist customers in dealing with the changes
required to be compliant to ensure successful information processing for
 
                                        7
<PAGE>   10
 
all parties. Because of the nature of the Company's business, the success of the
Company's efforts may depend on the success of providers, payors and others in
dealing with the Year 2000 issue. Total cost of the Company's Year 2000 project
is estimated to be $4.0 million and is being funded through operating cash
flows. The Company is expensing all costs associated with these system changes
as the costs are incurred. The Company estimates that Year 2000 expense for 1998
will be approximately $2.5 million. There can be no assurance, however, that
actual costs necessary to deal with these issues will not exceed estimated
amounts. If the Company or the third parties with which it interacts are unable
to deal successfully with the Year 2000 issue, such inability could have a
material adverse effect on the Company's business, results of operation or
financial condition.
 
   
     Reliance on Data Centers.  ENVOY's real-time EDI transaction processing
services depend on its host computer system which is contained in a single data
center facility. In addition, the Company's primary batch claims processing
capacity is outsourced to GTE Data Services Incorporated, located in Tampa,
Florida ("GTEDS"), which processes claims through a single computer center. The
contractual arrangement between the Company and GTEDS requires GTEDS to maintain
24 hours a day, seven days a week processing capability and a "hot site"
disaster recovery system. The Company's current contract with GTEDS expires in
December 1998. Any failure to renew this contract, or the failure to renew the
contract on favorable terms, could have a material adverse effect on the
Company's business, operating results or financial condition. The Company also
operates a batch claims processing center which is contained in a single data
center facility in Oklahoma City, Oklahoma for the processing of Blue Cross,
Blue Shield, Medicare and Medicaid claims. Although ENVOY is currently
evaluating certain disaster recovery alternatives, neither the real-time host
computer system nor the Oklahoma City batch claims center have a remote backup
data center. Furthermore, while the Company has insurance coverage for the
Company's host computer system and data centers, there can be no assurance that
fire or other disaster affecting such data centers would not disable the
Company's respective systems or otherwise have a material adverse effect on the
Company's business, financial condition or results of operations. In addition, a
disruption in service due to service problems, delays or outages from GTEDS
providing batch claims processing services to the Company could have a material
adverse effect on the Company's business, operating results or financial
condition.
    
 
     Development of Electronic Processing in the Health Care Industry.  ENVOY's
strategy anticipates that electronic processing of health care transactions,
including transactions involving clinical as well as financial information, will
win market acceptance and that providers and third-party payors increasingly
will use EDI and transaction processing networks for the processing and
transmission of data. Electronic transmission of health care transactions is
still developing, and complexities in the nature and types of transactions which
must be processed has hindered to some degree the development and acceptance of
electronic processing in this market. In addition, while the multiplicity of
claims forms and formats used by the many different third-party payors has
fostered the development of EDI and transaction processing clearinghouses, the
standardization of these claims formats, whether due to consolidation in the
industry or otherwise, could reduce the use of EDI and transaction processing
clearinghouses. There can be no assurance that continued conversion from paper-
based transaction processing to electronic transaction processing in the health
care market will occur or that, to the extent it does occur, health care
providers and payors will use independent networks such as those being developed
by the Company.
 
     Competition.  ENVOY faces significant competition in the health care sector
of the EDI and transaction processing market from companies that are similarly
specialized, including former regional partners of the Company that have direct
provider relationships, and also from companies that are involved in other, more
highly developed sectors of the EDI and transaction processing market. The
Company also faces competition from other companies, such as vendors of provider
information management systems, which have added or may add their own
proprietary transaction processing systems to existing or future products. As a
result of such competition, the Company may be pressured to reduce per
transaction prices or eliminate per transaction prices altogether. If electronic
transaction processing becomes the standard for claims and information
processing, a number of larger and better capitalized entities may elect to
enter the industry and further increase competitive pricing pressures. Many of
the Company's existing and potential competitors are larger and have
significantly greater financial, marketing, technological and other resources
than the Company.
 
                                        8
<PAGE>   11
 
     Availability of Direct Links.  Certain third-party payors provide
electronic data transmission systems to health care providers that establish a
direct link between the provider and the payor, bypassing third-party processors
such as the Company. Any significant increase in the utilization of direct links
between health care providers and payors would have a material adverse effect on
the Company's business, operating results and financial condition.
 
     Uncertain Regulatory Environment and Consolidation in the Health Care
Industry.  The health care industry is subject to changing political, economic
and regulatory influences that may affect the procurement practices and
operations of health care industry participants. Federal and state legislatures
periodically consider programs to modify or amend the United States health care
system at both the federal and state level. These programs may contain proposals
to increase governmental involvement in health care, lower reimbursement rates
or otherwise change the environment in which health care industry participants
operate. Health care industry participants may react to these proposals and the
uncertainty surrounding such proposals by curtailing or deferring investments,
including investments in the Company's services and products.
 
     In addition, many health care providers are consolidating to create larger
health care delivery organizations. This consolidation reduces the number of
potential customers for the Company's services, and the increased bargaining
power of these organizations could lead to reductions in the amounts paid for
the Company's services. Industry developments are increasing the amount of
capitation-based health care and reducing the need for providers to make claims
of reimbursement for products or services. Other health care information
companies, such as billing services and practice management vendors, which
currently utilize the Company's services, have developed or acquired transaction
processing and networking capabilities and may cease utilizing the Company's
services in the future. The impact of these developments in the health care EDI
and transaction processing industry is difficult to predict and could have a
material adverse effect on the Company's business, operating results or
financial condition.
 
     Health Care Data Legislation.  The Health Insurance Portability and
Accountability Act of 1996 ("HIPAA") mandates the use of standard transactions,
standard identifiers, security and other provisions, the use of which is
currently scheduled to occur as early as the year 2000. HIPAA specifically names
clearinghouses as the compliance facilitators for providers and payors.
Clearinghouses are given the freedom to utilize non-standard transactions and
convert them to the mandated standards on behalf of their clients. The Company
is preparing to comply with the mandated standards within three to six months
after their publication; however, the success of the Company's compliance
efforts may be dependent on the success of providers, payors and others in
dealing with the standards.
 
     Legislation which would impose restrictions on the ability of third-party
processors to transmit certain patient data without specific patient consent
also recently has been introduced in the U.S. Congress. Such legislation, if
adopted, could adversely affect the ability of third-party processors to
transmit certain data, including treatment and clinical data. The impact of the
foregoing or other legislation is difficult to predict and could materially
adversely affect the Company's business, operating results or financial
condition.
 
     Evolving Industry Standards and Rapid Technological Changes.  The market
for the Company's business is characterized by rapidly changing technology,
evolving industry standards and frequent introduction of new and enhanced
products and services. ENVOY's success will depend upon its continued ability to
enhance its existing products and services, to introduce new products and
services on a timely and cost-effective basis to meet evolving customer
requirements, to achieve market acceptance for new products and services and to
respond to emerging industry standards and other technological changes. There
can be no assurance that the Company will be able to respond effectively to
technological changes or new industry standards. Moreover, there can be no
assurance that competitive products and services will not be developed, or that
any such competitive services will not have an adverse effect upon the Company's
business, operating results or financial condition.
 
     Dependence on Technology; Risk of Infringement.  ENVOY's ability to compete
effectively depends to a significant extent on its ability to protect its
proprietary information. The Company relies primarily on copyright, trade secret
and patent laws, confidentiality procedures and licensing arrangements to
protect its intellectual property rights. The Company generally enters into
confidentiality agreements with its consultants
 
                                        9
<PAGE>   12
 
and employees and generally limits access to and distribution of its technology,
software and other proprietary information. Although the Company intends to
defend its intellectual property, there can be no assurance that the steps taken
by ENVOY to protect its proprietary information will be adequate to prevent
misappropriation of its technology or that the Company's competitors will not
independently develop technologies that are substantially equivalent or superior
to the Company's technology. ENVOY is also subject to the risk of alleged
infringement by ENVOY of the intellectual property rights of others. Although
the Company is not currently aware of any pending or threatened infringement
claims with respect to the Company's current or future products, there can be no
assurance that third parties will not assert such claims. Any such claims could
require the Company to enter into license arrangements or could result in
protracted and costly litigation, regardless of the merits of such claims. No
assurance can be given that any necessary licenses will be available or that, if
available, such licenses can be obtained on commercially reasonable terms.
Furthermore, litigation may be necessary to enforce ENVOY's intellectual
property rights, to protect the Company's trade secrets, to determine the
validity and scope of the proprietary rights of others or to defend against
claims of infringement. Such litigation could result in substantial costs and
diversion of resources and could have a material adverse effect on the Company's
business, operating results or financial condition.
 
   
     Increasing Dependence on Medical EDI and Patient Statement Transaction
Revenues.  The Company's medical EDI and patient statement transaction revenues
constituted approximately 70% of the Company's total revenues in 1997, and
approximately 75% of the Company's total revenues in the first quarter of 1998.
Although pharmacy EDI transactions currently represent a majority of the
Company's total transactions, the fees associated with these transactions are
significantly less on a per transaction basis than those received for medical
EDI and patient statement transactions. As a result, pharmacy EDI revenue
constituted less than 19% of the Company's total revenues in 1997, and less than
17% of the Company's total revenues in the first quarter of 1998. For 1997, the
Company's pharmacy EDI business grew at less than half the rate experienced in
the Company's other businesses based on the number of transactions processed.
Because of the significant penetration and lower per transaction prices already
existing in the more mature pharmacy EDI sector, the Company believes that its
pharmacy EDI business as presently conducted will continue to represent a
decreasing portion of the Company's total revenues in the future. As the mix of
the Company's business changes, a decline in growth rates associated with the
Company's medical EDI and patient statement services business could have a
material adverse effect on the Company's business, operating results or
financial condition. There can be no assurance that the mix of the Company's
business or growth rates will continue at their current level.
    
 
     Dependence on Key Executives.  The Company's success depends upon the
continued contributions of its senior management. The Company believes that its
continued future success also will depend upon its ability to attract, motivate
and retain highly-skilled technical, managerial and marketing personnel. The
loss of the services of certain of the Company's key executives or technical
personnel, particularly Fred C. Goad, Jr. and Jim D. Kever, or the inability to
hire and retain qualified personnel could have a material adverse effect upon
the Company's business, operating results or financial condition.
 
     Unauthorized Access to Data Centers.  Unauthorized access to the Company's
data centers and misappropriation of ENVOY's proprietary information could have
a material adverse effect on ENVOY's business, operating results or financial
condition. While ENVOY employs what it believes to be appropriate security
measures to protect against unauthorized access to its data centers and
misappropriation of its proprietary information, there can be no assurance that
such unauthorized access or misappropriation could not occur. Likewise, no
assurances can be made as to the security measures, if any, established by third
parties for whom ENVOY processes or transmits health care information.
 
     Certain Anti-takeover Provisions.  The charter, bylaws and shareholders'
rights plan of the Company, and Tennessee law, contain certain provisions that
may have the effect of inhibiting a non-negotiated merger or other business
combination involving the Company. Such provisions are intended to encourage any
person interested in acquiring the Company to negotiate with and obtain the
approval of the Company's Board of Directors (the "Board of Directors") in
connection with any such transaction. These provisions include a staggered Board
of Directors, blank check preferred stock, supermajority voting provisions, the
ability to issue stock purchase rights, and the application of Tennessee law
provisions on business combinations. Certain of these provisions may discourage
a future acquisition of the Company not approved by the Board of Directors
 
                                       10
<PAGE>   13
 
in which shareholders might receive a premium value for their shares. As a
result, shareholders who might desire to participate in such a transaction may
not have the opportunity to do so. In addition, the Board of Directors has the
power to designate the issuance of shares of preferred stock. The rights and
preferences for any series or class of preferred stock may be set by the Board
of Directors, in its sole discretion and without approval of the holders of the
Common Stock, and the rights and preferences of any such preferred stock may be
superior to those of the Common Stock, thus adversely affecting the rights of
the holders of Common Stock. Furthermore, there are currently authorized and
outstanding 2,800,000 shares of Series B Preferred Stock. The Series B Preferred
Stock has a liquidation preference to the Common Stock and the creation of any
other class or series of preferred stock senior to or pari passu with the Series
B Preferred Stock.
 
     Volatility of Stock Price; Absence of Dividends.  From time to time, there
may be significant volatility in the market price for the Common Stock.
Quarterly operating results of the Company, changes in earnings estimates by
analysts, changes in general conditions in the Company's industry or the economy
or the financial markets or other developments affecting the Company could cause
the market price of the Common Stock to fluctuate substantially. In addition, in
recent years the stock market has experienced significant price and volume
fluctuations. This volatility has had a significant effect on the market prices
of securities issued by many companies for reasons unrelated to their operating
performance. For the foreseeable future, it is expected that earnings, if any,
generated from ENVOY's operations will be used to finance the growth of its
business, and that no dividends will be paid to holders of the Common Stock.
 
                                       11
<PAGE>   14
 
                PRICE RANGE OF COMMON STOCK AND DIVIDEND POLICY
 
     The Common Stock is listed on The Nasdaq Stock Market under the symbol
"ENVY." The following table sets forth, for the periods indicated, the high and
low sale prices for the Common Stock as reported by The Nasdaq Stock Market.
 
   
<TABLE>
<CAPTION>
                                                               HIGH      LOW
                                                              ------    ------
<S>                                                           <C>       <C>
1996
  First Quarter.............................................  $24.25    $17.13
  Second Quarter............................................   32.75     23.25
  Third Quarter.............................................   40.50     21.50
  Fourth Quarter............................................   42.25     34.00
1997
  First Quarter.............................................  $38.25    $21.88
  Second Quarter............................................   35.75     20.38
  Third Quarter.............................................   37.25     25.50
  Fourth Quarter............................................   32.75     22.38
1998
  First Quarter.............................................  $46.63    $26.38
  Second Quarter............................................   55.63     37.50
  Third Quarter (through August 4, 1998)....................   53.00     33.25
</TABLE>
    
 
   
     On August 4, 1998, the last reported sale price for the Common Stock on The
Nasdaq Stock Market was $35.00 per share. At July 31, 1998, there were
approximately 5,700 beneficial holders of the Common Stock, including
approximately 223 holders of record.
    
 
     The Company has never declared or paid a cash dividend on its Common Stock.
It is the present policy of the Board of Directors to retain all earnings to
support operations and to finance expansion; therefore, the Company does not
anticipate declaring or paying cash dividends on the Common Stock in the
foreseeable future. The declaration and payment of dividends in the future will
be determined by the Board of Directors based on a number of factors, including,
but not limited to, the Company's earnings, financial condition and
requirements, restrictions in financing agreements and other factors deemed
relevant by the Board of Directors. Pursuant to the Company's $50 million credit
facility, the Company is prohibited from paying cash dividends on its capital
stock.
 
                                       12
<PAGE>   15
 
                      SELECTED CONSOLIDATED FINANCIAL DATA
 
     The selected consolidated financial data set forth below are derived from
the Company's financial statements. The selected consolidated financial
information for the three months ended March 31, 1997 and 1998 are derived from
the unaudited consolidated financial statements which, in the opinion of
management, include all adjustments, consisting only of normal recurring
adjustments, necessary for a fair presentation of the financial position and the
results of operations for these periods.
 
     Operating results for the three-month period ended March 31, 1998 are not
necessarily indicative of results for the full year. The selected consolidated
financial data should be read in conjunction with "Management's Discussion and
Analysis of Financial Condition and Results of Operations" and the Company's
consolidated financial statements and notes thereto included or incorporated by
reference in this Prospectus. The financial and other statistical data have been
restated to include the accounts and results of operations of the ExpressBill
Companies.
 
<TABLE>
<CAPTION>
                                                                                                  THREE MONTHS
                                                                 YEAR ENDED DECEMBER 31,        ENDED MARCH 31,
                                                              ------------------------------   ------------------
                                                              1995(1)      1996       1997       1997      1998
                                                              --------   --------   --------   --------   -------
                                                                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                           <C>        <C>        <C>        <C>        <C>
STATEMENTS OF OPERATIONS DATA:
Revenues....................................................  $34,197    $ 90,572   $137,605   $ 30,763   $42,524
Operating costs and expenses:
  Cost of revenues..........................................   18,967      43,500     64,304     14,380    19,397
  Selling, general and administrative expenses..............   11,156      24,631     32,734      7,760    10,218
  Research and development expenses.........................    1,466       1,779      2,135        842       622
  Depreciation and amortization expenses(2).................    2,725      19,508     26,095      6,073     6,993
  Merger and facility integration costs(3)..................       --       4,664         --         --        --
  Write-off of acquired in-process technology(4)............       --      30,700     38,000      3,000        --
  EMC losses................................................       --         540         --         --        --
                                                              -------    --------   --------   --------   -------
Operating income (loss).....................................     (117)    (34,750)   (25,663)    (1,292)    5,294
Other income (expense):
  Interest income...........................................      380       1,032      1,312        453       145
  Interest expense..........................................     (659)     (2,872)    (1,577)      (386)     (437)
                                                              -------    --------   --------   --------   -------
Income (loss) from continuing operations before income taxes
  and loss in investee......................................     (396)    (36,590)   (25,928)    (1,225)    5,002
Provision (benefit) for income taxes........................      (50)      1,717     (5,218)       739     2,744
Loss in investee............................................   (1,776)         --         --         --        --
                                                              -------    --------   --------   --------   -------
Income (loss) from continuing operations....................  $(2,122)   $(38,307)  $(20,710)  $ (1,964)  $ 2,258
                                                              =======    ========   ========   ========   =======
Income (loss) per common share from continuing operations
  assuming dilution(5)......................................  $ (0.14)   $  (3.22)  $  (1.05)  $  (0.10)  $  0.09
                                                              =======    ========   ========   ========   =======
Weighted average shares outstanding assuming dilution.......   14,739      16,519     19,686     18,976    25,102
                                                              =======    ========   ========   ========   =======
</TABLE>
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,       MARCH 31,
                                                              -------------------   ---------
                                                                1996       1997       1998
                                                              --------   --------   ---------
                                                                      (IN THOUSANDS)
<S>                                                           <C>        <C>        <C>
BALANCE SHEET DATA:
Working capital.............................................  $ 47,541   $ 18,027   $ 25,207
Total assets................................................   140,357    137,523    142,656
Long-term debt, less current portion........................     8,926        527        231
Preferred stock.............................................    55,021     55,021     41,300
Total shareholders' equity..................................   108,414     97,559     99,967
</TABLE>
 
- ---------------
 
(1) The Company was incorporated in August 1994 as a wholly-owned subsidiary of
    the Predecessor. The Predecessor was formed to develop and market electronic
    transaction processing services for the financial services and health care
    markets. In June 1995, in order to facilitate the transfer of the financial
    services business to First Data, the assets and liabilities of the
    Predecessor associated with the health care business were transferred to the
    Company. The Company was spun-off to shareholders through a stock dividend
    distribution, and the Predecessor was merged into First Data. The Company's
    financial statements incorporated by reference herein include financial
    information for the Predecessor through June 1995, with the financial
    services business shown as a discontinued operation. The above amounts
    exclude the results of discontinued operations as a result of the
    Predecessor's merger with First Data.
(2) Depreciation and amortization expenses primarily relate to acquisitions and
    includes amortization of goodwill and identifiable intangible assets of
    $14.6 million and $20.0 million in 1996 and 1997, and $4.6 million and $5.3
    million, in the three month periods ended March 31, 1997 and 1998,
    respectively. As of March 31, 1998, amortization expense related to
    acquisitions was expected to be approximately $19.1 million in 1998, $7.9
    million in 1999 and $4.7 million in 2000. Although goodwill associated with
    the acquisition of NEIC will become fully amortized during the first quarter
    of 1999, the consummation of additional acquisitions may significantly
    increase future amortization costs.
(3) The 1996 results include expenses of $4.7 million relating to merger and
    facility integration costs in conjunction with the NEIC and Teleclaims
    acquisitions.
(4) Results for the years ended December 31, 1996 and 1997 and the three months
    ended March 31, 1997 include expenses of $30.0 million, $35.0 million, and
    $3.0 million, related to the write-off of acquired in-process technology in
    conjunction with the acquisitions of NEIC, HDIC and DSS, respectively.
(5) Net loss per common share for the year ended December 31, 1996 has been
    restated to give effect to the beneficial conversion feature of the Series B
    Preferred Stock in accordance with EITF D-60. The application of the
    beneficial conversion feature of the Series B Preferred Stock prescribed by
    EITF D-60, which was promulgated by the SEC in March 1997 subsequent to the
    Company's initial accounting treatment relating to the issuance of the
    Series B Preferred Stock, requires that the difference between the market
    price of the Common Stock on the date of the Series B Preferred Stock
    purchase agreement ($14.75 per share) and the conversion price of the Series
    B Preferred Stock ($10.75 per share) be reflected as a preferred dividend in
    1996. Accordingly, the Company's historical financial statements have been
    restated to reflect the aggregate effect of the beneficial conversion
    feature as a preferred dividend ($14.9 million) resulting in a net loss per
    common share of $3.22 in 1996. The Company previously had reported a net
    loss per Common Share of $2.32 in 1996.
 
                                       13
<PAGE>   16
 
               MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                      CONDITION AND RESULTS OF OPERATIONS
 
     The following discussion and analysis should be read in conjunction with,
and is qualified in its entirety by, the Company's consolidated financial
statements, including the notes thereto, incorporated by reference herein.
 
OVERVIEW
 
     The Company is a leading provider of EDI and transaction processing
services to participants in the health care market, including pharmacies,
physicians, hospitals, dentists, billing services, commercial insurance
companies, managed care organizations, state and federal government agencies and
others.
 
     On February 27, 1998, the Company completed business combinations with the
ExpressBill Companies pursuant to separate agreements and plans of merger for an
aggregate of 3.5 million shares of Common Stock. These combinations have been
accounted for as poolings of interests, and the historical financial statements
of the Company for all periods have been restated to include the accounts and
results of operations of the ExpressBill Companies.
 
   
     The Company also has made several acquisitions since the beginning of 1996,
including the acquisitions of NEIC and several other businesses in 1996
(collectively, the "1996 Acquired Businesses") and HDIC and DSS in 1997
(collectively, the "1997 Acquired Businesses"). The 1996 Acquired Businesses and
1997 Acquired Businesses are sometimes collectively referred to herein as the
"Acquired Businesses." These acquisitions were accounted for under the purchase
method of accounting and, as a result, the Company has recorded the assets and
liabilities of the Acquired Businesses at their estimated fair values, with the
excess of the purchase price over these amounts being recorded as goodwill. In
connection with the allocation of purchase price for these Acquired Businesses,
valuations of all identified intangible assets of these Acquired Businesses were
made. The intangible assets of the Acquired Business included in-process
technology projects, among other assets, which were related to research and
development that had not reached technological feasibility and for which there
was no alternative future use. Pursuant to applicable accounting pronouncements,
the amounts of the purchase price allocated to these projects were expensed. As
a result of the valuations in connection with certain of the Acquired
Businesses, including NEIC, DSS and HDIC, the Company recorded write-offs for
acquired in-process technology of $30.7 million in 1996 and $38.0 million in
1997. See "-- Acquired In-Process Technology." The financial statements for all
periods reflect the operations of the Acquired Businesses for the periods after
their respective dates of acquisition.
    
 
   
     On September 16, 1997, the Company completed the sale of substantially all
of the assets related to the Company's hunting and fishing licenses and
electronic benefit transfer business (collectively "the Government Services
Business") for (i) $500,000 payable in the form of a promissory note due and
payable in full on August 31, 1999 and (ii) certain contingent payment amounts
based upon the achievement of specified future operating results of the
Government Services Business. The results of operations of the Government
Services Business are included in the Company's consolidated statements of
operations through the date of disposition, and includes revenues for 1997 of
approximately $466,000. Accordingly, the sale of the Government Services
business is not expected to have a material impact on the Company's future
results of operations.
    
 
     The Company's revenues principally have been derived from EDI and
transaction processing services to the health care market which generally are
paid for by the health care providers or third-party payors. Revenues generally
are earned on a per transaction basis. In addition, total revenues include
non-transaction based revenues derived from the ExpressBill Companies and some
of the Acquired Businesses. This revenue includes maintenance, licensing and
support activities, as well as the sale of ancillary software and hardware
products and, in the case of the ExpressBill Companies, certain printing
services.
 
                                       14
<PAGE>   17
 
     The Company's revenues generally are comprised of the following types of
EDI and transaction processing services: (i) pharmacy EDI, (ii) medical and
other EDI and (iii) patient statements. The table below shows the number of
transactions processed by the Company for the periods presented:
 
<TABLE>
<CAPTION>
                                                                         THREE MONTHS ENDED
                                             YEAR ENDED DECEMBER 31,          MARCH 31,
                                           ---------------------------   -------------------
                                            1995      1996      1997       1997       1998
                                           -------   -------   -------   --------   --------
                                                            (IN THOUSANDS)
<S>                                        <C>       <C>       <C>       <C>        <C>
Pharmacy EDI.............................  363,084   478,526   597,609   146,662    178,512
Medical and other EDI....................   15,308   132,724   215,437    46,164     71,647
Patient statements.......................   24,582    54,251    99,823    19,546     33,637
                                           -------   -------   -------   -------    -------
          Totals.........................  402,974   665,501   912,869   212,372    283,796
                                           =======   =======   =======   =======    =======
</TABLE>
 
The transactions reflected above include the transactions of the Acquired
Businesses from the date of acquisition, and include the transactions of the
ExpressBill Companies for all periods.
 
     While pharmacy EDI transactions currently represent a majority of the
Company's total transactions, the fees associated with these transactions are
significantly less on a per transaction basis than those received for medical
EDI and patient statement transactions. As a result, pharmacy EDI revenue
constituted less than 19% of the Company's total revenues in 1997, and less than
17% of the Company's total revenues in the first quarter of 1998. For 1997, the
pharmacy EDI business grew at a rate of approximately 25%, less than half the
rate experienced in the Company's other businesses based on the number of
transactions processed. The Company believes the limited growth in the Company's
pharmacy EDI revenues as compared to the Company's medical EDI and patient
statement revenues primarily is the result of two factors. First, the
acquisitions of the Acquired Businesses have contributed significantly to the
growth of the medical EDI and patient statement business, and the Company has
not made any acquisitions in the pharmacy EDI business. In addition, the Company
believes that growth in the pharmacy EDI business has not been as great as in
the medical EDI and patient statement business because of the larger market
penetration in the more mature pharmacy EDI business. As a result, the Company
expects its pharmacy EDI business as presently conducted to represent a
decreasing portion of the Company's total revenues in the future. As the mix of
the Company's business changes, a decline in the growth rates associated with
the Company's medical EDI and patient statement business could have a material
adverse effect on the financial condition and operating results of the Company.
There can be no assurance that the mix of the Company's business or growth rates
will continue at their current level.
 
     The Company continues to actively pursue the acquisition of health care
information businesses and other companies complementary to its business. The
Company's ability to successfully negotiate and close acquisitions will
materially impact the financial condition and operating results of the Company.
There can be no assurance that the Company will find attractive acquisition
candidates, be able to successfully finance and complete the acquisitions,
consolidate and integrate such businesses following the acquisition or
successfully operate them on a going forward basis.
 
                                       15
<PAGE>   18
 
RESULTS OF OPERATIONS
 
     The following table presents, for the periods indicated, the percentage
relationship certain statements of operations items bear to revenues.
 
<TABLE>
<CAPTION>
                                                                                 THREE MONTHS
                                                           YEAR ENDED               ENDED
                                                          DECEMBER 31,            MARCH 31,
                                                     -----------------------    --------------
                                                     1995     1996     1997     1997     1998
                                                     -----    -----    -----    -----    -----
<S>                                                  <C>      <C>      <C>      <C>      <C>
Revenues...........................................  100.0%   100.0%   100.0%   100.0%   100.0%
Cost of revenues...................................   55.5     48.0     46.7     46.8     45.6
Selling, general and administrative expenses.......   32.6     27.2     23.8     25.2     24.0
Research and development expenses..................    4.3      2.0      1.6      2.7      1.5
Depreciation and amortization expenses.............    8.0     21.5     19.0     19.7     16.4
Merger and facility integration costs..............     --      5.2       --       --       --
Write-off of acquired in-process technology........     --     33.9     27.6      9.8       --
EMC losses.........................................     --      0.6       --       --       --
                                                     -----    -----    -----    -----    -----
Operating income (loss)............................   (0.3)   (38.4)   (18.7)    (4.2)    12.5
Interest income....................................    1.1      1.1      1.0      1.5      0.3
Interest expense...................................   (1.9)    (3.2)    (1.2)    (1.3)    (1.0)
                                                     -----    -----    -----    -----    -----
Income (loss) from continuing operations before
  income taxes and loss in investee................   (1.2)   (40.4)   (18.8)    (4.0)    11.8
Provision (benefit) for income taxes...............   (0.2)     1.9     (3.8)     2.4      6.5
Loss in investee...................................   (5.2)      --       --       --       --
                                                     -----    -----    -----    -----    -----
Income (loss) from continuing operations...........   (6.2)%  (42.3)%  (15.1)%   (6.4)%    5.3%
                                                     =====    =====    =====    =====    =====
</TABLE>
 
THREE MONTHS ENDED MARCH 31, 1998 AS COMPARED WITH THREE MONTHS ENDED MARCH 31,
1997
 
     Revenues.  Revenues for the quarter ended March 31, 1998 were $42.5 million
compared to $30.8 million for the same period last year, an increase of $11.7
million or 38.0%. The increase in revenue is primarily the result of higher
transaction volumes. In total, transaction volumes increased 33.6% and revenue
increased 38.2%. The increases were primarily the result of medical EDI internal
transaction growth, and, to a lesser extent, the acquisition of HDIC and the
related increase in transaction volume. Without the increased transaction volume
from HDIC, transaction volumes would have increased 28.8% in the first quarter
of 1998 compared to the same period in 1997.
 
     Cost of Revenues.  Cost of revenues includes the cost of communications,
computer operations, operating supplies, product development and customer
support, as well as the cost of hardware sales and rebates to third parties for
transaction processing volume. Cost of revenues in the first quarter of 1998 was
$19.4 million compared to $14.4 million for the first quarter of 1997, an
increase of $5.0 million or 34.7%. The dollar increase is attributable to the
additional costs associated with the increased transaction volume and increases
in rebates paid to third parties in connection with medical EDI transactions.
These third parties aggregate medical EDI transactions from health care
providers, but require a clearinghouse (such as ENVOY) with direct connections
to payors in order to complete the processing of the transactions. ENVOY
typically receives revenue from payors on these transactions, and pays rebates
based on volume to certain of these third parties as an inducement to use ENVOY
as their clearinghouse for these transactions. The increase in rebates paid to
third parties was approximately $1.6 million, and primarily results from an
increase in the volume of claims received from certain large third party vendors
and claim clearinghouses. If the mix of revenues continues to shift toward
larger vendors and claim clearinghouses, the Company expects rebates to
represent an increasing portion of its costs of revenues. As a percentage of
revenues, cost of revenues continued to improve to 45.6% in the first quarter of
1998 compared to 46.8% in the first quarter of 1997. The improvement primarily
is attributable to the Company's ability to spread certain fixed costs of
revenue over a larger base of revenues.
 
     Selling, General and Administrative Expenses.  Selling, general and
administrative expenses include marketing, finance, accounting and
administrative costs. Selling, general and administrative expenses for the three
months ended March 31, 1998 were $10.2 million compared to $7.8 million in the
same period in 1997,
 
                                       16
<PAGE>   19
 
an increase of 30.8%. As a percentage of revenues, however, selling, general and
administrative expenses were 24.0% for the first quarter of 1998 compared to
25.2% for the first quarter of 1997. The improvement is attributable to the
Company's ability to spread its infrastructure costs over a larger base of
revenues. Transaction costs related to the business combinations with the
ExpressBill Companies totaled $780,000 in the first quarter of 1998, and
consisted of approximately $500,000 in legal and accounting fees, $200,000 for
financial advisory services and $80,000 in filing fees and other transaction
costs. These amounts are included in selling, general and administrative
expenses. Excluding these transaction costs, selling, general and administrative
expenses as a percentage of revenues for the first quarter of 1998 would have
been 22.1%.
 
     Research and Development Expenses.  Expenses related to research and
development of new products are expensed as incurred until technological
feasibility is established for the product. Thereafter, all development costs
are capitalized until the products are available for general use by customers.
Research and development expenses for the three months ended March 31, 1998 were
$622,000 compared to $842,000 for the comparable period in 1997.
 
     Depreciation and Amortization Expenses.  Depreciation and amortization
expense relates primarily to host computers, communications equipment and
goodwill and identifiable intangible assets related to acquisitions.
Depreciation and amortization expense for the first quarter of 1998 was $7.0
million compared to $6.1 million for the comparable period in 1997. The increase
is primarily the result of the amortization of goodwill and identifiable
intangible assets related to the 1997 Acquired Businesses. At March 31, 1998,
the Company had net goodwill of $29.2 million associated with the Acquired
Businesses remaining to be amortized over periods of three to 15 years following
the acquisitions. In addition, the Company had net identifiable intangible
assets of $21.0 million remaining to be amortized over two to nine year time
periods, as applicable.
 
     Write-off of Acquired In-Process Technology.  The Company incurred a
one-time write-off of acquired in-process technology of $3.0 million in
connection with the March 1997 acquisition of DSS. This amount represents an
allocation of purchase price to projects that consisted primarily of the
development of additional interfaces and functionality for DSS service
offerings. Such amount was charged to expense because the projects related to
research and development that had not reached technological feasibility and for
which there was no alternative future use.
 
     Net Interest Income (Expense).  The Company recorded net interest expense
of $292,000 for the three months ended March 31, 1998 compared to net interest
income of $67,000 for the first quarter in 1997. Interest income decreased from
$453,000 in the first quarter of 1997 to $145,000 in the first quarter of 1998.
In August 1997, the Company acquired HDIC for approximately $36.4 million in
cash and the assumption of certain liabilities associated with unfavorable
contracts. Following this acquisition, the Company had less cash available for
investment, accounting for the reduction in interest income in the first quarter
of 1998. Interest expense increased from $386,000 in the first quarter of 1997
to $437,000 in the first quarter of 1998. Interest expense in the first quarter
of 1998 resulted primarily from interest expense that is required to be imputed
in order to account for certain unfavorable long-term contracts assumed in the
HDIC acquisition. Interest expense in the three months ended March 31, 1997
resulted primarily from the Company's $10.0 million 9% convertible subordinated
notes issued in June 1995 (the "Convertible Notes"). In a series of transactions
completed during 1996 and 1997, all of the Convertible Notes were converted into
shares of Common Stock and, therefore, were not outstanding during the first
quarter of 1998.
 
     Income Tax Provision.  The Company's income tax provision for the first
quarter of 1998 was $2.7 million compared to $739,000 for the comparable period
in 1997. Amortization of certain goodwill and identifiable intangible assets is
not deductible for income tax purposes.
 
FISCAL YEAR 1997 AS COMPARED WITH 1996
 
     Revenues.  Revenues for the year ended December 31, 1997 were $137.6
million compared to $90.6 million for the same period last year, an increase of
$47.0 million or 51.9%. The increase in revenue is primarily due to a 37.2%
increase in transactions in 1997 compared to 1996. Transaction growth was
derived from both internal growth and the Acquired Businesses. Without the
increased transaction volume from the
 
                                       17
<PAGE>   20
 
Acquired Businesses, transaction growth would have been 32.3%. In addition, the
acquisition of DSS provided additional revenues of $2.8 million from software
licensing, maintenance and support activities.
 
     Cost of Revenues.  Cost of revenues in 1997 was $64.3 million compared to
$43.5 million for 1996, an increase of $20.8 million or 47.8%. The dollar
increase is attributable to the additional costs associated with the increased
transaction volume, the inclusion of the Acquired Businesses following the date
of acquisition and increases in rebates paid to third parties in connection with
medical EDI transactions, which increased by approximately $4.7 million. As a
percentage of revenues, cost of revenues improved to 46.7% in 1997 compared to
48.0% in 1996. The improvement primarily is attributable to the Company's
ability to spread certain fixed costs of revenue over a larger base of revenues.
 
     Selling, General and Administrative Expenses.  Selling, general and
administrative expenses for 1997 were $32.7 million compared to $24.6 million in
1996, an increase of 32.9%. The dollar increase is the result of the inclusion
of the Acquired Businesses following the date of acquisition and the required
infrastructure to support the larger base of revenues. As a percentage of
revenues, selling, general and administrative expenses decreased to 23.8% for
1997 compared to 27.2% for 1996. The improvement is attributable to a larger
base of revenues and the elimination of certain duplicative costs realized in
connection with the Acquired Businesses following the date of acquisition.
 
     Research and Development Expenses.  Research and development expenses for
the year ended December 31, 1997 were $2.1 million compared to $1.8 million in
1996.
 
     Depreciation and Amortization Expenses.  Depreciation and amortization
expenses for 1997 were $26.1 million compared to $19.5 million for 1996. The
increase in 1997 is primarily the result of the amortization of $20.0 million in
goodwill and identifiable intangible assets related to the Acquired Businesses,
compared with $14.6 million in 1996. Depreciation and amortization increased
further as the result of the additional investment in host computer systems and
software to expand the Company's transaction processing capabilities.
 
     Merger and Facility Integration Costs.  The Company recognized merger and
facility integration costs in 1996 of $4.7 million related primarily to the NEIC
and Teleclaims acquisitions. These charges represent costs incurred as a direct
result of the plan to integrate NEIC and Teleclaims. The Company estimates that
no future costs will be charged to merger and facility integration costs related
to NEIC and Teleclaims.
 
     Write-off of Acquired In-Process Technology.  The Company recorded
write-offs of acquired in-process technology of $38.0 million and $30.7 million
in 1997 and 1996, respectively. The 1997 write-offs related to the HDIC and DSS
acquisitions, and the 1996 write-offs related to the NEIC and Teleclaims
acquisitions. These amounts represent an allocation of purchase price to
projects that primarily included: (i) projects for the integration of NEIC
service offerings into ENVOY product lines; (ii) the extension and integration
of on-line adjudication processes developed by HDIC into ENVOY service
offerings; and (iii) the development of additional interfaces and functionality
for accounts receivable management service offerings provided by DSS. Such
amounts were charged to expense because the projects related to research and
development that had not reached technological feasibility and for which there
was no alternative future use.
 
     Net Interest Expense.  The Company recorded net interest expense of
$265,000 for 1997 compared to net interest expense of $1.8 million for 1996.
Interest income increased to $1.3 million in 1997 compared to $1.0 million in
1996, primarily because of an increase in the amount of cash available for
investment during 1997. In this regard, operating activities provided cash of
$22.0 million in 1997 compared to $3.2 million in 1996, and the Company's August
1996 public offering of 3,320,000 shares of Common Stock provided cash of
approximately $83.0 million. The proceeds from this public offering were used,
in part, to retire indebtedness under a $25 million term loan and $12.9 million
outstanding under the Company's revolving credit facility. Primarily as a result
of these debt repayments, interest expense decreased to $1.6 million in 1997
compared to $2.9 million in 1996.
 
     Income Tax Provision (Benefit).  The Company's income tax benefit for 1997
was $5.2 million compared to a tax provision of $1.7 million in 1996. The tax
benefit recorded in 1997 reflects a deferred
 
                                       18
<PAGE>   21
 
income tax benefit of $13.3 million associated with the $35.0 million charge for
the write-off of acquired in-process technology related to the HDIC acquisition.
 
FISCAL YEAR 1996 AS COMPARED WITH 1995
 
     Revenues.  Revenues for the year ended December 31, 1996 were $90.6 million
compared to $34.2 million for the same period in 1995, an increase of $56.4
million or 165%. This increase is primarily attributable to additional revenues
generated from the 1996 Acquired Businesses following the date of acquisition
and a 31.8% increase in pharmacy EDI transactions over 1995.
 
     Cost of Revenues.  Cost of revenues in 1996 was $43.5 million compared to
$19.0 million in 1995, an increase of 129%. The dollar increase is attributable
to the inclusion of results of the 1996 Acquired Businesses following the date
of acquisition and increased transaction volume in the Company's pre-acquisition
business. As a percentage of revenues, cost of revenues was 48.0% in 1996
compared to 55.5% in 1995. The improvement is attributable to the inclusion of
results of the 1996 Acquired Businesses following the date of acquisition, which
historically experienced higher gross profit margins than those of the Company's
pre-acquisition business.
 
     Selling, General and Administrative Expenses.  Selling, general and
administrative expenses for 1996 were $24.6 million compared to $11.2 million in
1995, an increase of 120%. These expenses increased due to the inclusion of
results of the 1996 Acquired Businesses following the date of acquisition and
the additional costs associated with such acquisitions. As a percentage of
revenues, selling, general and administrative expenses decreased to 27.2% for
1996 compared to 32.6% for 1995. The improvement is attributable to a larger
base of revenues, as well as the elimination of certain duplicative costs
realized in connection with the 1996 Acquired Businesses following the date of
acquisition.
 
     Research and Development Expenses.  Research and development expenses for
the year ended December 31, 1996 were $1.8 million, compared to $1.5 million in
1995.
 
     Depreciation and Amortization Expenses.  Depreciation and amortization
expenses for 1996 were $19.5 million compared to $2.7 million for 1995. The
increase is the result of the amortization of goodwill and identifiable
intangible assets during 1996 of $14.6 million primarily related to the 1996
Acquired Businesses. Depreciation and amortization increased further as the
result of the additional investment in host computer systems during 1996 to
expand the Company's transaction processing capabilities.
 
     Merger and Facility Integration Costs.  The Company recognized merger and
facility integration costs in 1996 of $4.7 million related to the NEIC and
Teleclaims acquisitions.
 
     Write-off of Acquired In-Process Technology.  The Company recorded a
write-off of acquired in-process technology of $30.7 million in 1996 related to
the NEIC and Teleclaims acquisitions. These amounts represent an allocation of
purchase price to projects that consisted primarily of the integration of
service offerings of NEIC and Teleclaims into ENVOY product lines. Such amounts
were charged to expense because the projects related to research and development
that had not reached technological feasibility and for which there was no
alternative future use.
 
   
     EMC Losses.  In January 1995, ENVOY acquired a 17.5% interest in
EMC*Express, Inc. ("EMC"). In connection therewith, the Company also entered
into an agreement for the management of EMC, which required the Company to fund
certain of EMC's operating costs in the form of advances, and acquired an option
to purchase the remaining 82.5% interest in EMC for approximately $2.7 million.
At December 31, 1995, the Company determined it would terminate the management
agreement and would not exercise its option to purchase the remaining 82.5%
interest in EMC, principally as a result of similar products and technology
being available to the Company through the acquisition of NEIC, EMC's poor
operating performance and the belief that operating losses at EMC likely would
continue. As such, the Company determined that it was probable an impairment of
its equity investment in EMC as of December 31, 1995 had occurred and recorded
an adjustment to recognize an impairment in the carrying value of its
investment, including writing off advances and providing for future commitments
to EMC at the time when the Company's investment was recorded at net realizable
value of zero. As a result, the Company recognized
    
 
                                       19
<PAGE>   22
 
   
losses in 1996 of $540,000 relating to the funding of EMC operating losses
through the termination date of the management agreement in March 1996. Based
upon the Company's decision to terminate the management agreement, the Company
discontinued the equity method of accounting for EMC and began accounting for
the investment on a cost basis. Accordingly, the loss related to EMC has been
charged to operating expense. Following the termination of the management
agreement and option, certain shareholders of EMC filed a lawsuit against the
Company asserting claims for breach of contract and negligent conduct. In
October 1996, the Company acquired the remaining 82.5% interest in EMC for $2.0
million in cash and settled the related lawsuit for $300,000. In connection with
the Company's acquisition of the remaining 82.5% interest of EMC, the Company
recorded identifiable intangible assets of approximately $1.9 million related to
the customer base acquired from EMC.
    
 
     Net Interest Expense.  The Company recorded net interest expense in 1996 of
$1.8 million compared to $279,000 of net interest expense for 1995. Interest
income increased to $1.0 million in 1996 compared to $380,000 in 1995, primarily
because of an increase in the amount of cash available for investment following
the Company's August 1996 public offering of 3,320,000 shares of Common Stock.
Interest expense increased to $2.9 million in 1996 compared with $659,000 in
1995, primarily as a result of borrowings under the Convertible Notes and
borrowings under the Company's bank credit facilities.
 
     Income Tax Provision (Benefit).  The Company's income tax provision in 1996
was $1.7 million compared to an income tax benefit of $50,000 in 1995.
 
   
ACQUIRED IN-PROCESS TECHNOLOGY
    
 
   
     In connection with the purchases of certain of the Acquired Businesses,
including NEIC, DSS and HDIC, the Company made allocations of the purchase price
to acquired in-process technology totaling $30.7 million in 1996 and $38.0
million in 1997. These amounts were expensed as non-recurring charges on the
respective acquisition dates of the Acquired Businesses because the acquired
in-process technology had not yet reached technological feasibility and had no
future alternative uses. Since the respective dates of acquisition, the Company
has used the acquired in-process technology to develop new health care EDI and
transaction processing product and service offerings, which have or will become
part of the Company's suite of products when completed. Products using the
acquired in-process technology have been introduced at various times following
the respective acquisition dates of the Acquired Businesses, and the Company
currently expects to complete the development of the remaining projects at
various dates during 1998 and 1999. Upon completion, the Company offers the
related products and services to its customers.
    
 
   
     The nature of the efforts required to develop the acquired in-process
technology into commercially viable products principally relate to the
completion of all planning, designing and testing activities that are necessary
to establish that the product or service can be produced to meet its design
requirements, including functions, features and technical performance
requirements. The Company currently expects that the acquired in-process
technology will be successfully developed, but there can be no assurance that
commercial viability of these products will be achieved. Furthermore, future
developments in the health care EDI and transaction processing industry, changes
in EDI and transaction processing technology, changes in other product and
service offerings or other developments may cause the Company to alter or
abandon these plans.
    
 
   
     The fair value for the in-process technology in each acquisition was based
on analysis of the markets, projected cash flows and risks associated with
achieving such projected cash flows. In developing these cash flow projections,
revenues were forecasted based on relevant factors, including aggregate revenue
growth rates for the business as a whole, individual service offering revenues,
characteristics of the potential market for the service offerings and the
anticipated life of the underlying technology. Operating expenses and resulting
profit margins were forecasted based on the characteristics and cash flow
generating potential of the acquired in-process technology, and included
assumptions that certain expenses would decline over time as operating
efficiencies were obtained. Appropriate adjustments were made to operating
income to derive net cash flow, and the estimated net cash flows of the
in-process technologies in each acquisition were then discounted to present
value using rates of return that the Company believes reflect the specific
risk/return characteristics of these research and development projects. The
selection of discount rates for application in each acquisition
    
 
                                       20
<PAGE>   23
 
   
were based on the consideration of: (i) the weighted average cost of capital
("WACC"), which measures a company's cost of debt and equity financing weighted
by the percentage of debt and percentage of equity in its target capital
structure; (ii) the corresponding weighted average return on assets ("WARA")
which measures the after-tax return required on the assets employed in the
business weighted by each asset group's percentage of the total asset portfolio;
and (iii) venture capital required rates of return which typically relate to
equity financing for relatively high-risk business or business projects.
    
 
   
     Failure to complete the development of these projects in their entirety, or
in a timely manner, could have a material adverse impact on the Company's
operating results, financial condition and results of operations. No assurance
can be given that actual revenues and operating profit attributable to acquired
in-process technology will not deviate from the projections used to value such
technology in connection with each of the respective acquisitions. Ongoing
operations and financial results for acquired businesses and the Company as a
whole are subject to a variety of factors which may not have been known or
estimable at the date of such acquisition, and the estimates discussed below
should not be considered the Company's current projections for operating results
for the acquired businesses or the Company as a whole.
    
 
   
     A description of the acquired in-process technology and the estimates made
by the Company for each of NEIC, DSS and HDIC is set forth below.
    
 
   
  NEIC
    
 
   
     The in-process technology acquired in the NEIC acquisition consisted of
five significant research and development projects. These projects were all
aimed at facilitating the ease of participation of healthcare providers into
clearinghouse technologies and ensuring compliance with regulatory and other
industry standards. After acquiring NEIC, the Company continued the development
of these in-process projects, all of which the Company estimates were less than
10% complete at the date of acquisition. The aggregate value assigned to the
NEIC in-process technology was $30.0 million. A brief description of the five
in-process projects is set forth below:
    
 
   
          UniClaim.  This product is a PC based claims processing system that
     extracts Health Care Financing Administration 1500 claim formats from
     practice management systems ("PMS"), performs edits and transports the file
     to a host system where EDI formatting is completed for delivery to payors.
     This project was completed in the second quarter of 1996. The value
     assigned to this in-process technology was $4.4 million.
    
 
   
          GTEDS.  This product is a computerized system for the collection,
     validation and distribution of claims from various sources to claims
     receivers. The project was completed in the fourth quarter of 1996. The
     value assigned to the GTEDS in-process technology was $21.5 million.
    
 
   
          On-Line.  This product is an application that performs "screen
     scraping" (i.e., it captures data from a screen presentation and creates an
     American National Standards Institute 270 eligibility request). This
     project was completed during the second quarter of 1998. The value assigned
     to this in-process technology was $1.2 million.
    
 
   
          SmartPost.  This product is an application to populate a physician PMS
     with remittance data for automatic posting to the PMS. In the first quarter
     of 1997, the Company completed the acquisition of DSS, which already had a
     Receivables Management product that included substantially the same
     functionality as the SmartPost product and determined to abandon further
     development of SmartPost. The value assigned to this in-process technology
     was $2.5 million.
    
 
   
          Expect.  This product is an application for screen scraping at payor
     locations. In the first quarter of 1997, the Company identified an existing
     software application with the same capabilities as Expect, and made a
     decision to license that software and abandon the Expect project. The value
     assigned to this in-process technology was $400,000.
    
 
                                       21
<PAGE>   24
 
   
At the time of the valuation, the expected costs to complete all such projects
was $2.2 million. As of March 1998, approximately $1.8 million had been incurred
for these projects, and there were no additional expected costs to complete the
research and development projects acquired from NEIC.
    
 
   
     Revenue attributable to NEIC's in-process technology was assumed to
increase in the first three years of the six year projection period at annual
rates ranging from 43% to 10%, decreasing over the remaining years at rates
ranging from 36% to 4% as other products are released in the marketplace.
Projected annual revenue ranged from approximately $29.3 million to $70.6
million over the term of the projections. These projections were based on
aggregate revenue growth rates for the business as a whole, individual product
revenues, giving consideration to transaction volumes and prices, anticipated
growth rates for the electronic claims market, anticipated product development
and product introduction cycles, electronic claims cycles and the estimated life
of the underlying technology. Projected revenues from the in-process technology
were assumed to peak in 1998 and decline from 1999 to 2001 as other new products
are expected to enter the market.
    
 
   
     Gross profit was assumed to increase in the first three years of the
projection period at annual rates ranging from 44% to 11%, decreasing over the
remaining years at rates ranging from 37% to 6%, resulting in incremental annual
gross profits of approximately $23.7 million to $59.4 million. The gross profit
projections assumed a growth rate approximately the same as the revenue growth
rate.
    
 
   
     Operating profit was assumed to increase in the first four years of the
projection period at annual rates of 105% to 2%, and decrease over the remaining
years at 33% annually, resulting in incremental annual operating profits of
approximately $7.4 million to $24.8 million. Operating profit is projected to
increase at a faster rate than revenues in the earlier years of the projection
primarily because all product developments costs were assumed to be incurred in
the first two years, reducing operating expenses as a percentage of revenue
after the second year.
    
 
   
     The Company used a 25% discount rate for valuing the in-process technology
acquired in the NEIC acquisition, which the Company believes reflected the risk
associated with the completion of these research and development projects and
the estimated future economic benefits to be generated subsequent to their
completion.
    
 
   
  DSS
    
 
   
     The in-process technology acquired in the DSS acquisition consisted
primarily of projects related to DSS's Receivables Management product line and
four peripheral products expected to be used as add-on features to the
Receivables Management product. DSS's Receivables Management product line works
with existing hospital information system ("HIS") and PMS software and provides
claims and receivables management, including billings, collections and cash
applications, among other functions. At the time of acquisition, DSS was selling
versions of the Receivables Management product to work with certain HIS and PMS
products; however, the Company noted that there was still substantial
development work required in order to complete versions which were adapted to
other major HIS and PMS products. After acquiring DSS, the Company continued
development of the Receivables Management product and the four associated add-on
features, all of which the Company estimates were less than 10% complete at the
date of acquisition. These development efforts included planning, modifying
existing designs, coding and testing of the resulting products. The aggregate
value assigned to the DSS in-process technology was $3.0 million. Since each of
these projects were to be incorporated into the DSS product line, the cash flow
projections prepared for valuation purposes treated all of these projects as a
single unit and, therefore, the individual projects were not separately valued.
A brief description of each of the four add-on features is set forth below:
    
 
   
          Materials Management.  This product incorporates certain customized
     features into licensed software to allow for online transaction processing
     of inventory data. This project was completed during the third quarter of
     1997.
    
 
                                       22
<PAGE>   25
   
          Billing and 72 Hour Compliance.  This product processes all emergency
     room billings and collections, in addition to tracking patients throughout
     the emergency/casualty process. This project was completed during the first
     quarter of 1998.
    
 
   
          Registration.  This product facilitates access to patient records, as
     well as providing basic patient information to payors. The Company
     estimates that the project was approximately 20% complete as of March 31,
     1998, and currently anticipates that this project will be completed during
     the fourth quarter of 1998.
    
 
   
          Collections.  This product assists the health care provider's HIS or
     PMS system in the management of receivables. In the fourth quarter of 1997,
     management placed further development of this project on hold while it
     evaluates alternative technologies and development strategies. At the time
     that the project was placed on hold, the Company estimates that this
     project was approximately 50% complete.
    
 
   
At the time of the valuation, the expected costs to complete all such projects
totaled $200,000. Approximately $150,000 had been incurred for these projects
through March 31, 1998 and the Company estimates that approximately $50,000 will
be required to complete the remaining research and development projects.
    
 
   
     Revenue attributable to DSS's in-process technology was forecasted through
2004. Over this time period, the Company expects to realize increases in the
in-process technology's revenues from: (i) an expected penetration of the
Company's customer base; (ii) sales of new versions of the Receivables
Management product to existing DSS customers; and (iii) sales from the
development of the additional "add-on" features to both the Company's and DSS's
customers. Revenue for the in-process technology was assumed to increase in the
first four years of the projection period at rates ranging from 38% to 15%,
decreasing over the remaining years at rates ranging from 40% to 5% as other
products are released in the marketplace. Projected annual revenue ranged from
approximately $1.9 million to $5.2 million over the term of the projections.
These projections were based on anticipated penetration of the Company's
existing customer base, sales of new versions of the Receivables Management
product to existing DSS customers, and sales from the development of additional
"add-on" products to both the Company's and DSS's customers, taking into account
projected product development and introduction schedules, product sales cycles
and the estimated life of the product technologies. Projected revenues from the
in-process technology were assumed to peak in 2000 and decline from 2001 to 2004
as other new products are expected to enter the market.
    
 
   
     Gross profit was assumed to increase in the first four years of the
projection period at annual rates ranging from 38% to 15%, decreasing over the
remaining years at rates ranging from 40% to 5%, resulting in incremental annual
gross profits of approximately $1.6 million to $4.4 million. The gross profit
projections assumed a growth rate approximately the same as the revenue growth
rate.
    
 
   
     Operating profit was assumed to increase in the first four years of the
projection period at annual rates of 94% to 15%, and decrease over the remaining
years at rates ranging from 40% to 5%, resulting in incremental annual operating
profits of approximately $450,000 to $1.7 million. Operating profit is projected
to increase at a faster rate than revenues in the second year primarily because
all product developments costs were assumed to be incurred in the first year,
reducing operating expenses as a percentage of revenue after the first year.
    
 
   
     The Company used a 20% discount rate for valuing the in-process technology
acquired in the DSS acquisition, which the Company believes reflected the risk
associated with the completion of these research and development projects and
the estimated future economic benefits to be generated subsequent to their
completion.
    
 
   
  HDIC
    
 
   
     The in-process technology acquired in the HDIC acquisition consisted
primarily of seven significant research and development projects associated with
HDIC's product line. At the time of acquisition, HDIC had developed on-line,
real-time claims transaction technology which permitted AUSHC to receive
real-time EDI transactions, and was in the process of developing new transaction
sets which would allow health care providers to submit additional health care
transactions electronically. After acquiring HDIC, the Company modified the
Company's existing front-end transaction platforms to accommodate HDIC's
technology and
    
                                       23
<PAGE>   26
 
   
continued the development of seven in-process projects, all of which the Company
estimates were less than 10% complete at the date of acquisition. The Company
believes that the resulting technology has given, and will continue to give, the
Company a competitive advantage in the marketplace by significantly enhancing
the Company's existing EDI and transaction processing capabilities with
additional transaction sets. The aggregate value assigned to HDIC's in-process
technology was $35.0 million. Since each of these projects were to be
incorporated into the HDIC product line, the cash flow projections prepared for
valuation purposes treated all these projects as a single unit and, therefore,
the individual projects were not separately valued. A brief description of each
of the seven in-process projects is set forth below:
    
 
   
          Real-time referrals.  This product is designed to allow batch or
     on-line real-time transaction processing for referral authorization and the
     ability to receive or confirm acknowledgment through the Company's network
     that a valid referral is on file with the primary care provider ("PCP").
     This project was completed during the second quarter of 1998.
    
 
   
          Vision claims.  This product is designed to provide the capability for
     health care providers to submit vision claims and vision related
     information electronically. The Company estimates that the project was
     approximately 75% complete as of March 31, 1998, and currently anticipates
     that this project will be completed during the third quarter of 1998.
    
 
   
          Lab utilization/results.  This product is designed to allow electronic
     transmission of lab testing requests and reporting of lab results. The
     Company estimates that the project was approximately 45% complete as of
     March 31, 1998, and currently anticipates that this project will be
     completed during the third quarter of 1998.
    
 
   
          Provider directories.  This product is designed to allow for the
     maintenance of reference information related to health care providers and
     provider networks. The Company estimates that the project was approximately
     75% complete as of March 31, 1998, and currently anticipates that this
     project will be completed in the fourth quarter of 1998.
    
 
   
          Real-time encounters/claims.  This product is designed to allow batch
     or on-line real-time transaction processing for the transmission of
     encounter data from the PCP or a capitated specialist to the insurer, and
     the subsequent acknowledgment of receipt. The Company estimates that the
     project was approximately 50% complete as of March 31, 1998, and currently
     anticipates that this project will be completed during the first quarter of
     1999.
    
 
   
          Electronic pre-certifications.  This product is designed to allow
     batch or real-time batch transaction processing for the request and
     authorization to perform non-capitated procedures or hospital admissions.
     This transaction is initiated from the PCP, specialist hospital or other
     delivery system. The Company estimates that the project was approximately
     10% complete as of March 31, 1998, and currently anticipates that this
     project will be completed during the second quarter of 1999.
    
 
   
          Rosters through the Internet.  This product is designed to use the
     Internet as a means to deliver to health care providers managed care
     program eligibility status and capitated payment information. The Company
     estimates that the project was approximately 55% complete as of March 31,
     1998, and currently anticipates that this project will be completed during
     the third quarter of 1999.
    
 
   
At the time of the valuation, the expected costs to complete all such projects
totaled $1.8 million. Approximately $400,000 has been incurred for these
projects through March 31, 1998 in completing these projects, and the Company
estimates that approximately $1.4 million will be required to complete the
remaining research and development projects.
    
 
   
     Revenue attributable to HDIC's in-process technology was assumed to
increase in the first three years of the six year projection period at rates
ranging from 56% to 7%, decreasing over the remaining years at rates ranging
from 54% to 4% as other products are released in the marketplace. Projected
annual revenue ranged from approximately $11.2 million to $48.2 million over the
term of the projections. These projections were based on increased transaction
volume through existing and new customer channels, increased fees per
transaction, anticipated growth rates for the electronic claims market,
anticipated product development and
    
 
                                       24
<PAGE>   27
 
   
product introduction cycles, electronic claims cycles and the estimated life of
the underlying technology. In addition, these projections also took into account
the expected effects that completing the in-process technology would have in
reducing volume constraints which the Company believes resulted in
underutilization of the HDIC technology. Projected revenues from the in-process
technology were assumed to peak in 2000 and decline from 2001 to 2003 as other
new products are expected to enter the market.
    
 
   
     Gross profit was assumed to increase in the first three years of the
projection period at rates ranging from 55% to 7%, decreasing over the remaining
years at rates ranging from 57% to 10%, resulting in incremental annual gross
profits of approximately $7.5 million to $36.5 million. The gross profit
projections assumed a growth rate approximately the same as the revenue growth
rate.
    
 
   
     Operating profit was assumed to increase in the second year of the
projection period at a rate of 75%, remain unchanged in the third year, and
decrease over the remaining years at rates ranging from 58% to 12%, resulting in
incremental annual operating profits of approximately $5.2 million to $26.1
million. Operating profit is projected to increase at a faster rate than
revenues in the second year because all product development costs were assumed
to be incurred in the first year, reducing operating expenses as a percentage of
revenue in the second year.
    
 
   
     The Company used a 30% discount rate for valuing the in-process technology
acquired from HDIC, which the Company believes reflected the risk associated
with the completion of these research and development projects and the estimated
future economic benefits to be generated subsequent to their completion.
    
 
   
LIQUIDITY AND CAPITAL RESOURCES
    
 
     The Company has incurred operating losses in recent years primarily as a
result of the write-off of acquired in-process technology related to the
Acquired Businesses, together with substantial non-cash depreciation and
amortization charges. During these periods, however, operations have generated
positive cash flows of $1.8 million in 1995, $3.2 million in 1996, $22.0 million
in 1997 and $12.7 million for the three months ended March 31, 1998.
 
     Investing activities consist primarily of payments for acquired businesses
and purchases of property and equipment. Investing activities used $13.3 million
in 1995, $94.0 million in 1996, $51.2 million in 1997 and $1.4 million in the
three months ended March 31, 1998.
 
     Financing activities consist primarily of proceeds from the issuance of
capital stock, and proceeds from and payments on debt. Financing activities
provided $7.4 million in 1995, $127.2 million in 1996 and $1.0 million in 1997,
and used $1.6 million in the three months ended March 31, 1998.
 
     On May 6, 1998, the Company completed the acquisition of Synergy for $10.0
million in cash. Following this acquisition and as of June 23, 1998, the Company
had available cash and cash equivalents of approximately $13.0 million.
 
     The Company purchases additional computer hardware and software products
from time to time as required to support the Company's business. The Company
incurred capital expenditures of $8.7 million and $5.4 million for 1997 and
1996, respectively, primarily for computer hardware and software products. The
Company currently estimates that total capital expenditures for 1998 will be
approximately $8 to $9 million.
 
     The Company is expensing as incurred all costs associated with system
changes related to its Year 2000 compliance project. The Company estimates that
the total cost of the Year 2000 expenses will be approximately $4.0 million, of
which approximately $2.5 million will be incurred during 1998. These costs are
being funded with available cash. See "Risk Factors -- Year 2000 Compliance."
 
     At June 30, 1998, the Company had no amounts outstanding under its $50
million revolving credit facility. Any future borrowings made under the credit
facility would bear interest at a rate equal to the Base Rate (as defined in the
credit facility) or an index tied to LIBOR. Any future borrowings under the
credit facility would be due and payable in full on June 30, 2000. The credit
facility contains financial covenants applicable to the Company and its
subsidiaries, including ratios of debt to capital, annualized EBITDA to
                                       25
<PAGE>   28
 
annualized interest expense and certain other financial covenants customarily
included in a credit facility of this type. The Company and its subsidiaries
also are subject to certain restrictions relating to payment of dividends to
shareholders of the Company, acquisitions, incurrence of debt and other
restrictive provisions; however, there are no restrictions on the ability of the
Company's subsidiaries to transfer funds to the Company in the form of
dividends, loans or advances. The credit facility is secured by substantially
all of the assets of the Company and its subsidiaries.
 
     In February 1998, the Company issued 3.5 million shares of Common Stock in
connection with the ExpressBill Companies' business combinations. Also in
February 1998, 930,233 shares of the Series B Preferred Stock were converted
into an equal number of shares of Common Stock. As a result of these
transactions, the number of shares of Common Stock outstanding increased by
approximately 4.4 million shares, or 27%, to 21.1 million shares.
 
     From time to time, the Company has engaged and will continue to engage in
acquisition discussions with health care information businesses and other
companies complementary to its business. In the event the Company engages in
such acquisitions in the future, its currently available capital resources may
not be sufficient for such purposes and the Company may be required to incur
additional indebtedness or issue additional capital stock, which could result in
increased interest expense or dilution to existing investors.
 
   
     Based on current operations, anticipated capital needs to fund known
expenditures and current acquisitions, the Company believes its available cash,
cash flow from operations and the $50.0 million revolving credit facility will
provide the capital resources necessary to meet its liquidity and cash flow
requirements over the next 12 months, including the Company's current short-term
obligations. The Company believes that present funding sources will provide the
ability to meet long-term obligations as they mature. As of March 31, 1998, the
Company's long-term obligations totaled $8.8 million, and consisted of $231,000
in long-term debt net of current portion, and $8.6 million in long-term
obligations related to unfavorable contracts assumed in connection with the HDIC
acquisition. Such amounts relate primarily to the Company's obligations under
the AUSHC services agreement to assume a portion of the transaction processing
fees related to certain secondary Medicare transactions, and existing agreements
assumed by the Company with several businesses that served as claims
clearinghouses for AUSHC prior to the HDIC acquisition. The Company's available
cash is invested in interest bearing securities with maturities of up to 30
days.
    
 
SEASONALITY
 
     ENVOY's business is to some extent seasonal, with more revenues being
generated from September through March as a result of a greater number of health
care transactions arising in those months, while operating expenses tend to
remain relatively constant over the course of the year.
 
IMPACT OF INFLATION
 
     Inflation has not had a significant impact on ENVOY's results of operations
to date.
 
                                       26
<PAGE>   29
 
                                    BUSINESS
 
     ENVOY is a leading provider of EDI and transaction processing services to
participants in the health care market, including pharmacies, physicians,
hospitals, dentists, billing services, commercial insurance companies, managed
care organizations, state and federal governmental agencies and others. The
Company provides health care EDI services on a real-time and batch-processing
basis by utilizing proprietary computer and telecommunications software and
microprocessor technology. ENVOY is one of the largest processors of electronic
real-time pharmacy and commercial third-party payor batch transactions in the
United States based upon annual transaction volume. Through the Company's
recently completed business combinations with the ExpressBill Companies, the
Company believes that it has the largest patient statement processing and
printing services business in the United States, processing more than 100
million patient statements annually. ENVOY's transaction network, which
processed approximately 984.3 million transactions in the 12 months ended March
31, 1998, consisted of approximately 200,000 physicians, 35,000 pharmacies,
42,000 dentists, 4,600 hospitals and 811 payors, including approximately 46 Blue
Cross Blue Shield Plans, 59 Medicare Plans and 38 Medicaid Plans as of May 31,
1998.
 
INDUSTRY BACKGROUND
 
     Throughout the 1980's, advances in computer software, telecommunications
and microprocessor technology enabled the development of on-line, real-time
systems that electronically capture and transmit information, replacing the
recording and processing of transaction information on paper. In addition to
offering greater convenience, these electronic systems reduce processing costs,
settlement delays and losses from fraudulent transactions. The earliest and most
significant advances in electronic transaction processing occurred in the
financial services market, particularly in the areas of credit card
authorization and settlement. The Company believes the evolution of electronic
transaction processing in the financial services market has created the
framework for automation of other markets, such as health care, still dominated
by paper-based processing.
 
     The first major departure from paper-based claims processing in the health
care market occurred in the late 1980s in the pharmacy industry. Medicare and
Medicaid payment reforms and cost saving initiatives by third-party commercial
payors and large retail pharmacy chains led to a significant increase in
electronic processing of pharmacy third-party claims. The development and use by
pharmacies of practice management software products that include the capability
of connecting with an electronic claims processing network also facilitated the
movement to electronic claims processing.
 
     The Company believes EDI and transaction processing offers a number of
benefits to health care payors and providers. The elimination or reduction of
paper-based transactions significantly lowers claims processing costs of payors,
and on-line encounter and referral information provides more efficient medical
cost management for managed care organizations and networked providers. In
addition, payors are able to more easily detect fraud and screen for unusual
utilization trends. From the health care providers' standpoint, information
pertaining to eligibility, authorization and reimbursement can be more easily
accessed and transmitted. By processing claims electronically, providers also
reduce overhead costs and staff time and improve accounts receivable management.
 
     There are many types of transactions, information exchanges and other
communications that occur between the various participants in the health care
industry, including patients, pharmacies, physicians, hospitals, dentists,
billing services, commercial insurance companies, managed care organizations,
state and federal government agencies and others. While EDI and transaction
processing for certain portions of the health care market has increased over the
past few years, many health care transactions continue to be paper-based and
manually-processed. Existing EDI and transaction processing services in this
market primarily consist of: (i) on-line verification of patient eligibility by
pharmacies, health care providers and third-party payors (both commercial and
governmental) through direct network communications; (ii) verification that the
provider is eligible to treat the patient; (iii) verification that the patient
is eligible for the treatment; (iv) filing of encounter data; (v) referral
management for providers and payors; and (vi) batch processing of health care
reimbursement claims through a central clearinghouse.
 
                                       27
<PAGE>   30
 
     Health care providers initiate EDI and transaction processing through
dedicated point-of-service terminals, stand alone software or software
integrated with the provider's management information system. Providers can
verify patient eligibility or obtain authorization for services at the time of
appointment or registration by transmitting patient data to the processor across
a telecommunication line. The processor then interfaces with the payor to obtain
an eligibility or authorization confirmation which is transmitted back to the
provider. The submission of claims generally occurs by providers aggregating
claims throughout the day and submitting them electronically to a clearinghouse
in batch. Claims are sorted, formatted and edited by the clearinghouse, and are
then forwarded electronically to the payor. The claim is processed by the payor
and the adjudicated response is communicated back to the provider. To the extent
required, the payor sends a check to the provider or, in certain circumstances,
initiates an electronic funds transfer to the provider's account.
 
     According to the Health Data Directory, approximately 86% of the 1.7
billion third-party pharmacy claims processed in 1997 were processed
electronically. The Company believes that only a small percentage of nonclaim
pharmacy transactions, such as the delivery of prescriptions by the physician to
the pharmacist or formulary inquiries to pharmacy benefit managers, are
delivered electronically through real-time on-line systems. The Company believes
that there are opportunities to expand EDI and transaction processing to other
areas in the pharmacy market. Also, as the population continues to grow and more
benefit plans include prescription programs, the Company believes the demand for
real-time processing of pharmacy transactions should continue to increase
correspondingly.
 
     In addition to pharmacies, other providers, including hospitals, physicians
and dentists, transmit third-party reimbursement claims electronically, largely
on a batch basis through claims clearinghouses. According to the Health Data
Directory, approximately 42% of the 2.5 billion non-pharmacy health care claims
processed in 1997 were processed electronically. The recent growth of managed
care and governmental health care cost containment efforts have increased the
use of real time transaction processing by hospitals and physicians by
emphasizing not only lower costs, but improved operating efficiencies and
increasing accountability. Certain state Medicaid programs permit providers to
electronically verify Medicaid eligibility on a real-time basis, and certain
managed care companies have encouraged their provider networks to utilize
real-time EDI for authorizations, encounter reports and referrals. The Company
believes that there are significant opportunities for further expansion of EDI
transactions to the non-pharmacy sector of the health care market, both for
claims processing as well as for clinical and other purposes.
 
STRATEGY
 
     ENVOY's strategy is to maintain and enhance its leadership position in the
health care EDI and transaction processing industry. The key elements of this
strategy include:
 
          Leverage current strengths in the health care EDI and transaction
     processing industry.  ENVOY intends to continue to expand its real-time
     pharmacy and health care EDI and transaction processing business through
     aggressive marketing and strategic alliances with third parties that have
     access to a large number of health care industry participants. The Company
     believes that its strengths include an extensive transaction network and
     range of health care EDI delivery platforms between payors and providers
     and high quality customer service. In addition, the Company will seek to
     leverage its transaction volume in an effort to be the low cost provider of
     health care EDI services.
 
          Expand product and service offerings.  The Company believes that much
     of the information that flows from and among each of the various
     participants in the health care market can be transmitted electronically
     and by third parties, such as the Company, with greater efficiency and cost
     effectiveness. To further expand its health care EDI and transaction
     processing business, the Company has in development and testing additional
     service offerings, such as electronic prescriptions, lab orders, lab
     results and other transactions. In this regard, the Company's electronic
     prescription transaction processing services currently are being tested in
     the field and are scheduled to be rolled out during the first quarter of
     1999, and lab orders and lab results transaction services currently are
     being developed by the Company in cooperation with a national laboratory
     and independent practice association. In addition, the Company's
 
                                       28
<PAGE>   31
 
     software enables providers and payors to electronically process
     transactions such as remittance advice, patient rosters, electronic fund
     transfers and E-mail.
 
          Extend EDI and transaction processing network within the health care
     industry.  The Company plans to increase the connection to and
     interconnection among physicians, hospitals, pharmacies, managed care
     organizations and other third-party payors, laboratories, medical equipment
     suppliers and, eventually, employers and patients. The Company believes
     that a higher degree of interconnectivity among these health care
     participants will increase the overall level of electronic and related
     transactions.
 
          Pursue strategic acquisitions.  The Company expects to continue to
     pursue acquisitions of related health care information businesses in order
     to achieve greater economies of scale and to remain a cost effective
     provider of health care EDI and transaction processing services. In
     addition, the Company believes that as the currently fragmented health care
     EDI and transaction processing industry grows and consolidates, acquisition
     opportunities should arise for the Company as well as other market
     competitors and, thus, lead to the emergence of a few industry leaders. The
     Company believes that, among other opportunities, low volume processors may
     eventually seek to sell their portfolios of physician and hospital customer
     relationships to higher volume health care EDI and transaction processors
     such as the Company. The Company also intends to continue to pursue
     strategic acquisitions as a means of broadening its product and service
     offerings, as it did with the business combinations with the ExpressBill
     Companies and the acquisition of Synergy.
 
COMPANY SERVICES
 
     ENVOY provides various EDI and transaction processing services to
participants in the health care market.
 
     Real-time Transaction Processing.  The Company provides real-time
transaction processing for pharmacy claim adjudication and managed care
transactions for health care providers and payors.
 
     A standard pharmacy transaction commences with an inquiry by the pharmacy,
through a point-of-service terminal or personal computer terminal, to determine
whether the patient is covered by a benefit program. After eligibility is
confirmed, the claim is settled and the payor transmits to the pharmacy
information regarding the amount and timing of the pending payment. As of March
31, 1998, ENVOY's pharmacy EDI network was linked to approximately 35,000 of the
estimated 51,000 retail pharmacies in the United States, including 40 of the top
50 retail pharmacy chains.
 
     ENVOY's real-time managed care transactions between providers and payors
include (i) verification of the patient's enrollment in a program; (ii)
verification that the provider is eligible to treat the patient; (iii)
verification that the patient is eligible for a particular treatment; (iv)
filing of encounter data; (v) referral to a specialist; and (vi) other ancillary
transactions. Through its EDI and transaction processing network, the Company
has real-time access to several of the largest managed care and commercial
insurer databases in the United States, including Prudential Healthcare, CIGNA,
AUSHC, Oxford Health Plans, MetraHealth, Pacificare, Empire Blue Cross and Blue
Shield and Blue Cross and Blue Shield for the National Capital Area, and is a
sponsored participant to the Blue Cross and Blue Shield BluesNet network. For
Medicaid eligibility verification and related transactions, the Company
currently has access to databases for 27 states. In addition, if a patient
wishes to pay the deductible or co-payment amounts by credit card, ENVOY's
services provide the ability to obtain payment authorization and verification at
the provider's offices.
 
     Batch Transaction Processing.  With the acquisition of NEIC, ENVOY became
one of the nation's largest processors of commercial third-party payor claims
and enhanced its electronic network with connections to a significant number of
health care providers and payors across the United States. Batch transactions
are predominantly used to process reimbursement claims in traditional
fee-for-service commercial or government payor systems and to process encounter
data in capitated environments. These transactions are not as time-sensitive or
as easily processed on a real-time basis and, as a result are processed on a
collective and delayed basis, usually daily. To submit claims, health care
providers collect data throughout the day and then electronically forward these
claims in bulk to a clearinghouse. ENVOY's clearinghouse electronically
 
                                       29
<PAGE>   32
 
collects and verifies receipt of the claims and performs reformatting and
editing required to conform to a particular payor's specifications, aggregates
daily transactions by payor and transmits claims to payors based upon each
payor's chosen communications protocols. As of March 31, 1998, ENVOY's
transaction network was connected with 668 of the commercial third-party payors,
including all of the top 20 commercial payors (based upon the number of members
covered by such third-party payors).
 
     EDI Products and Interfaces.  The Company has developed a range of hardware
and software products and interfaces to facilitate the adoption of EDI by its
customers. In addition, ENVOY supports industry standards of the American
National Standards Institute X12N Subcommittee and Healthcare Financing
Administration National Standards. These products, and the functions they
enable, include the following:
 
          ENline(R).  The Company's ENline family of proprietary software
     products performs all of the transactions of a stand alone point-of-service
     terminal and has enhanced functionality to facilitate both batch and
     real-time processing. The point-of-service terminal product, called ENline
     Genesis, is designed to handle real-time transactions and allow the Company
     to rapidly and cost effectively connect a significant number of providers
     into the transaction network. The point-of-service terminals can be
     accessed remotely to modify application software and communications
     parameters, allowing the Company the flexibility to implement changes in
     services relatively easily. Point-of-service terminals often are purchased
     from the Company by payors, who are sponsoring a managed care network, and
     offered by the payors to providers free of charge. In addition, providers
     may purchase terminals from the Company for a fee.
 
          The Company also has developed certain ENline PC-based products with
     enhanced functionality features and open Application Program Interfaces
     ("APIs"). The APIs are established at the operating system level and are
     designed to enable the Company's software to run on a wide variety of
     operating systems including DOS, UNIX and Windows. The ENline PC-based
     products can either function as a stand alone data entry system or work in
     conjunction with physician practice management software. The stand alone
     version, ENline Companion, is offered directly to providers. ENline Synergy
     is designed for integration into a practice management software product.
     The Company, in conjunction with the practice management vendor, integrates
     ENline Synergy into the practice management system for distribution by the
     practice management vendor to the provider. ENline Synergy also controls
     the editing and distribution of the information from the practice
     management system to the Company's network.
 
          Automatic Eligibility Verification.  During 1996, the Company acquired
     technology for the automation of eligibility requests through the
     acquisition of National Verification Systems, L.P. ("NVS"). This technology
     interfaces with hospital and large practice management information systems
     to automatically verify patient eligibility at the time of admission or
     scheduling. Eligibility requests are obtained from the Company's real-time
     transaction processing network. In addition to eligibility verification,
     the Company's eligibility verification system provides statistical
     reporting on patient demographics for hospitals and/or physician practices.
 
          Automatic Transaction Posting.  Through the acquisition of
     substantially all of the assets of DSS in March 1997, the Company acquired
     EDI technology used for automatic posting of transactions into a hospital
     or practice management information system. This technology, which has been
     integrated to work in tandem with NVS's automatic eligibility verification
     technology, uses transactions obtained from the Company's real-time and
     batch processing centers to perform automated remittance posting,
     accelerated secondary billing and member update of eligibility information.
 
     Patient Statements.  Through the business combinations with the ExpressBill
Companies, the Company is able to offer automated patient billing services to
the hospital and other health care provider markets. The Company believes it has
the largest stand alone patient statement processing and printing services
business in the United States, processing more than 100 million patient
statements annually. The Company's patient statement services include electronic
data transmission and formatting, statement printing and mailing services for
health care providers and practice management system vendors.
 
                                       30
<PAGE>   33
 
     Customer Service.  As an adjunct to its healthcare EDI and transaction
processing services, the Company maintains customer service facilities with help
desks for customer inquiries. Client support employs a modern call tracking and
response system which is directly connected to the real-time and batch
processing centers. The customer service staff is available via a toll-free
telephone number. Customer support services are frequently included in the
contract price for health care EDI and transaction processing services, but also
may be billed separately, depending upon the specific contract terms. The
Company also offers other services, such as on-site and telephone product
training, installation and terminal repair and replacement.
 
SALES AND MARKETING
 
     The Company develops and maintains payor, provider and vendor relationships
primarily through its direct sales and marketing personnel located throughout
the United States. As of June 5, 1998, ENVOY employed approximately 115 sales
and marketing personnel. The Company's primary sales and marketing strategy
focuses on selling its services to organizations that have relationships with or
access to a large number of providers, including major health care practice
management system vendors. These relationships give ENVOY access to a large
health care provider population as the Company expands the breadth of its
services from the payor to the health care providers' desktop.
 
     In the pharmacy segment, the Company traditionally has established
relationships with large retail pharmacy chains and pharmacy software vendors.
To market its batch claims processing services, the Company develops
relationships with third-party payors and large submitters of claims. Real-time
managed care EDI services are offered to providers either directly by the
Company's sales force or indirectly through commercial managed care
organizations. In addition, the Company works closely with practice management
system vendors to provide an integrated solution to health care industry
participants.
 
CUSTOMERS
 
   
     The Company's principal customers consist of health care providers, such as
pharmacies, physicians, hospitals, dentists and billing services, and
third-party payors, such as commercial indemnity insurers, managed care
organizations and state and federal governmental agencies. Primarily as a result
of the HDIC acquisition, the Company has one customer, AUSHC, that accounted for
approximately 12% of the Company's revenues during 1997. Prior to 1997, no
customer accounted for more than 10% of the Company's revenues. Concurrently
with the HDIC acquisition, the Company and AUSHC entered into a ten year
services agreement which requires AUSHC to use the Company as its single source
clearinghouse and EDI network for all AUSHC electronic health care transactions.
The AUSHC services agreement specifies performance criteria for the Company and
contains fixed fee pricing for the first five years of the agreement. In the
event of an uncured material default by either party, the AUSHC services
agreement can be terminated by the non-defaulting party prior to the expiration
of its term on 180 days' notice. The Company believes that it is currently in
compliance in all material respects with the terms of the AUSHC services
agreement.
    
 
OPERATIONS
 
     The Company delivers its services through an integrated electronic
transaction processing system, which includes ENVOY-designed software, host
computer hardware, network management, switching services and the ability to
interact with customers' personal computers and a variety of point-of-service
devices, most of which were originally designed by the Company.
 
     ENVOY's real-time host computer system consists of Stratus and Data General
mini computers designed and configured to operate 24 hours a day, seven days a
week. The Stratus systems are scaleable and are designed and manufactured to
accommodate a fault-tolerant, nonstop environment. A fault-tolerant environment
is provided for the Data General systems by maintaining on-line standby
computers. The real-time host computer system data center is protected by
automated fire suppression systems designed to extinguish fire with minimal
damage to the computer equipment. The data center is further protected by
uninterruptible power supply systems consisting of diesel generators and battery
backups. In case of loss of commercial power, these systems can supply power to
the data center to continue operations. The data center
 
                                       31
<PAGE>   34
 
can only be entered by accessing a password protected security lock. The
software and related data files are backed up nightly and stored off-site.
 
     The Company's real-time communications network consists of dedicated
circuits, T-l facilities and dial-up modem ports, which facilitate electronic
real-time communication among payors, providers and other users of
time-sensitive health care information. This communications network is designed
to provide a low cost, multipath host access from a computer modem or point of
service device with minimal delays and a high degree of accuracy and integrity.
The Company manages multiple lease lines to pharmacies and third-party payors.
The Company uses a number of different nationwide public communications networks
to provide access to substantially all potential domestic customers.
 
     To minimize the possibility that a customer might experience delay by a
failed or overloaded circuit, at least two potential communications paths are
provided for each transaction. Utilizing ENVOY's call tracking system,
transactions are rerouted under centralized control to receive the lowest
communications cost available and to bypass failed or overloaded communications
nodes.
 
   
     A substantial portion of the Company's batch claim processing is outsourced
to GTEDS. Utilizing the Company's proprietary software, GTEDS processes batch
transactions on an IBM 3090 mainframe computer coupled with a RISC-based
communications network server. The contractual arrangement between the Company
and GTEDS requires the processor to maintain 24 hours a day, seven days a week
processing capability and a "hot site" disaster recovery system. The Company's
current contract with GTEDS expires in December 1998. Any failure to renew the
GTEDS contract, or the failure to renew the GTEDS contract on terms favorable to
the Company, could have a material adverse effect on the Company's business,
results of operations or financial condition. In addition, a disruption in
service due to service problems, delays or outages from GTEDS's providing batch
claims processing services to the Company could have a material adverse effect
on the Company's business, results of operations or financial condition.
    
 
PROPRIETARY RIGHTS
 
     ENVOY owns certain of the software and systems designs that it uses and has
a limited, perpetual, nonexclusive, royalty-free license to use other software
and systems designs, such as the point-of-service device designs which were
developed by the Predecessor. The Company also licenses certain other software
from third parties.
 
     The Company's success is dependent in part upon the EDI and transaction
processing technology developed by the Company. A combination of trade secrets,
service mark, copyrights, patents and contract protection is used to establish
and protect that technology. There can be no assurance these legal protections
and the precautions taken by the Company will be adequate to prevent
misappropriation of technology used by ENVOY. In addition, the legal protections
do not prevent independent third-party development of competitive technology.
 
COMPETITION
 
     The Company faces potential competition in the health care EDI and
transaction processing market not only from other companies that are similarly
specialized, including former regional partners of the Company that have direct
provider relationships, but also from companies involved in other, more highly
developed sectors of the EDI and transaction processing market. Such companies
could enter into, or focus more attention on, the health care EDI and
transaction processing market as it develops. In addition, the Company faces
competition by selected providers bypassing the Company's network and going
directly to the payor. Many of ENVOY's existing and potential competitors have
greater financial, marketing and technological resources. There can be no
assurance that the Company can continue to compete successfully with its
existing and potential competitors in the health care EDI and transaction
processing market.
 
     Factors influencing competition in the health care EDI and transaction
market include (i) compatibility with the provider's software and inclusion in
practice management software products, (ii) in the case of the pharmacy market,
relationships with major retail pharmacy chains, and (iii) relationships with
third-party
 
                                       32
<PAGE>   35
 
payors and managed care organizations. The Company believes that the breadth,
price and quality of its services are the most significant factors in developing
and maintaining relationships with pharmaceutical chains, third-party payors and
managed care organizations.
 
EMPLOYEES
 
   
     As of July 31, 1998, ENVOY had approximately 860 employees, including
approximately 600 salaried and 260 non-salaried employees (including temporary
employees). None of these employees is represented by a union. ENVOY believes
its relationship with its employees is good.
    
 
GOVERNMENT REGULATION
 
     Governmental regulatory policies affect the charges for and the terms of
ENVOY's access to private line and public communications networks. ENVOY also
must obtain certification on the applicable communications network for design
innovations for point-of-service devices and proprietary software. Any delays in
obtaining necessary certifications with respect to future products and services
could delay their introduction. In addition, the Federal Communications
Commission requires ENVOY's products and services to comply with certain rules
and regulations governing performance. The Company believes its existing
products and services comply with all current rules and regulations. The Company
can give no assurance, however, that such rules and regulations regarding access
to communications networks will not change in the future. In addition,
legislation has been proposed which would mandate standards and impose
restrictions on the Company's ability to transmit health care EDI and
transaction data. See "Risk Factors -- Health Care Data Legislation." Changes in
such rules, regulations or policies or the adoption of legislation that make it
more costly to communicate on networks could adversely affect the demand for or
the cost of supplying services in the health care EDI transaction processing
business.
 
                                       33
<PAGE>   36
 
                                   MANAGEMENT
 
     The directors and executive officers of the Company are as follows:
 
<TABLE>
<CAPTION>
NAME                           AGE                           POSITION
- ----                           ---                           --------
<S>                            <C>   <C>
Fred C. Goad, Jr.(1).........  57    Chairman of the Board, Co-Chief Executive Officer and
                                     Director
Jim D. Kever(1)..............  45    President, Co-Chief Executive Officer and Director
Kevin M. McNamara............  42    Senior Vice President, Chief Financial Officer and
                                     Director
Harlan F. Seymour............  48    Senior Vice President of Corporate Strategy and
                                     Development and Director
William E. Ford(2)...........  36    Director
W. Marvin Gresham(3).........  68    Director
Laurence E. Hirsch(1)(3).....  52    Director
Richard A. McStay(2).........  61    Director
Dewey A. Greene..............  42    Chief Operating Officer
Sheila H. Schweitzer.........  50    Senior Vice President of Operations
Gregory T. Stevens...........  33    Vice President, General Counsel and Secretary
</TABLE>
 
- ---------------
 
(1) Member of Executive Committee of the Board of Directors.
(2) Member of Audit Committee of the Board of Directors.
(3) Member of Compensation Committee of the Board of Directors.
 
     Mr. Goad has served as the Company's Chairman of the Board and Co-Chief
Executive Officer since August 1995 and served as President and a Director since
the Company's incorporation in August 1994. Mr. Goad served as Chief Executive
Officer and a Director of the Predecessor from September 1985 through June 6,
1995. Mr. Goad also is a Director of Performance Food Group Company, a food
distribution company, and is a Director of Oacis Healthcare Systems, Inc., a
clinical healthcare software and services company.
 
     Mr. Kever has served as the Company's President and Co-Chief Executive
Officer since August 1995, and as a Director since the Company's incorporation
in August 1994. Prior to such time, he served as the Company's Executive Vice
President, Secretary and General Counsel. Mr. Kever had served as a Director and
Secretary, Treasurer and General Counsel of the Predecessor since 1981 and as
Executive Vice President since 1984. Mr. Kever also is a Director of Transaction
Systems Architects, Inc., a supplier of electronic payment software products and
network integration solutions, and 3D Systems Corporation, a manufacturer of
technologically advanced solid imaging systems and prototype models.
 
     Mr. McNamara has served as the Company's Senior Vice President and Chief
Financial Officer since February 1996, and as a Director since July 1997. Before
joining the Company, he served as President of NaBANCO Merchant Services
Corporation, a subsidiary of First Financial Management Corporation ("FFMC"),
from October 1994 to December 1995. Mr. McNamara served as Senior Executive Vice
President and Chief Financial Officer of National Bancard Corporation, another
subsidiary of FFMC, from January 1992 through September 1994.
 
     Mr. Seymour has served as the Company's Senior Vice President of Corporate
Strategy and Development since August 1997, and as a Director since October
1996. Before joining the Company as a full-time employee in August 1997, Mr.
Seymour was a partner in Jefferson Capital Partners, Ltd., an investment banking
firm, from September 1996 to June 1997. Prior to such time, he served as
Executive Vice President and Chief Operating Officer, Business Development, of
Trigon Blue Cross Blue Shield, a leading health care insurance services company
("Trigon"), from August 1994 to June 1996. Before joining Trigon, Mr. Seymour
was with FFMC, for 11 years, serving in a variety of senior corporate positions,
where his last responsibility was President and Chief Executive Officer of First
Health Services Corporation, a wholly-owned subsidiary of FFMC.
 
     Mr. Ford was appointed a Director of the Company on March 6, 1996. Mr. Ford
has served as a managing member of General Atlantic Partners LLC, the general
partner of General Atlantic Partners 25, L.P. and as a general partner of GAP
Coinvestment Partners, L.P. since 1991. Mr. Ford also serves as a
 
                                       34
<PAGE>   37
 
Director of GT Interactive Software Corporation, a provider of entertainment and
educational consumer software; MAPICS, Inc., a provider of enterprise resource
planning software applications for manufacturing enterprises; LHS Group, Inc., a
provider of scaleable client/server-based billing solutions to carriers in the
telecommunications industry; SS&C Technologies, Inc., a financial software
company; and E*Trade Group, Inc., a discount on-line electronic brokerage
company.
 
     Mr. Gresham has served as a Director of the Company since February 1995 and
had served as a Director of the Predecessor from 1981 through June 6, 1995. Mr.
Gresham is the retired President of Gresham Drugs, Inc., a chain of pharmacies
in the State of Florida.
 
     Mr. Hirsch has served as a Director of the Company since February 1995 and
had served as a Director of the Predecessor from 1987 through June 6, 1995. Mr.
Hirsch has served as the President of Centex Corporation, a corporation engaged
in home building, mortgage banking and related businesses, from March 1985 to
July 1991, as its Chief Executive Officer since July 1988, and as its Chairman
of the Board of Directors since July 1991. Mr. Hirsch also serves as a Director
of Commercial Metals Company, a company engaged in the manufacturing and
recycling of steel and metal products, and as a Trustee of BlackRock Investors,
Inc., a registered investment company.
 
     Mr. McStay has served as a Director of the Company since February 1995 and
had served as a Director of the Predecessor from 1985 through June 6, 1995. Mr.
McStay served as President of Southern Capital Advisors, Inc., the investment
advisory subsidiary of Morgan Keegan & Company, Inc., from 1986 until his
retirement in March 1998, and is a Director of TBC Corporation, a wholesaler of
automobile tires and accessories.
 
     Mr. Greene has served as the Company's Chief Operating Officer since March
1998. Before joining the Company, Mr. Greene served from March 1994 to September
1997 as a division president for Columbia/ HCA Healthcare Corporation. Prior to
such time, he served as Chief Executive Officer of Longview Regional Hospital, a
wholly-owned subsidiary of HealthTrust, Inc., from July 1991 to March 1994.
 
     Ms. Schweitzer currently serves as the Company's Senior Vice President of
Operations. Before joining the Company in August 1995, Ms. Schweitzer served
from December 1991 to July 1995 as President and Chief Executive Officer of
Medical Management Resources, Inc., a health care EDI services company which is
a wholly-owned subsidiary of The Associated Group, Inc.
 
     Mr. Stevens currently serves as the Company's Vice President, General
Counsel and Secretary. From 1990 until he joined the Company in September 1996,
Mr. Stevens was an attorney with the law firm of Bass, Berry & Sims PLC in
Nashville, Tennessee.
 
                                       35
<PAGE>   38
 
                              SELLING SHAREHOLDERS
 
     The following table sets forth certain information regarding the beneficial
ownership of Common Stock by the Selling Shareholders as of        , 1998, and
as adjusted to reflect the sale of the Common Stock offered hereby.
 
<TABLE>
<CAPTION>
                                    SHARES OF COMMON STOCK                        SHARES OF COMMON
                                         BENEFICIALLY                         STOCK TO BE BENEFICIALLY
                                        OWNED PRIOR TO                                 OWNED
                                         OFFERING(1)             SHARES          AFTER OFFERING(1)
                                   ------------------------       BEING       ------------------------
NAME                                NUMBER       PERCENT(2)      OFFERED        NUMBER     PERCENT(2)
- ----                               ---------     ----------     ---------     ----------   -----------
<S>                                <C>           <C>            <C>           <C>          <C>
Richard B. McIntyre/The McIntyre
  Charitable Remainder Trust DTD
  06/02/98(3)(4).................  2,131,000     10.1%/8.9%       965,000     1,166,000    5.5%/4.9 %
Michael F. Marolf, Sr.(3)........    713,854     3.4/3.0          305,937       407,917    1.9/1.7
Jeffrey B. Marolf(3).............    217,048     1.0/*             93,021       124,027    */*
Lisa A. Marolf(3)................    217,048     1.0/*             93,021       124,027    */*
Michael F. Marolf, Jr.(3)........    217,048     1.0/*             93,021       124,027    */*
Fred C. Goad, Jr.(5).............    624,849(6)  2.9/2.6          100,000       524,849    2.4/2.2
Jim D. Kever(7)..................    710,526(8)  3.3/2.9          100,000       610,526    2.8/2.5
                                   ---------     ---------      ---------     ---------     --------
          Total..................                               1,750,000
                                                                =========
</TABLE>
 
- ---------------
 
  * less than one percent
   
(1) For the purpose of determining "beneficial ownership," the rules of the SEC
    require that every person who has or shares the power to vote or dispose of
    shares of stock be reported as a "beneficial owner" of all shares as to
    which such power exists. As a consequence, multiple persons may be deemed to
    be the "beneficial owners" of the same securities. The SEC rules also
    require that certain shares of stock that a beneficial owner has the right
    to acquire pursuant to the exercise of stock options within 60 days of the
    date as of which information is reported are deemed to be outstanding for
    the purpose of calculating the percentage ownership of such owner, but are
    not deemed outstanding for the purpose of calculating the percentage
    ownership of any other person. At the close of business on July 31, 1998,
    there were 21,196,354 and 2,800,000 shares of Common Stock and Series B
    Preferred Stock, respectively, outstanding.
    
(2) The second percentage assumes conversion of all outstanding shares of Series
    B Preferred Stock into Common Stock.
(3) The indicated shareholder received the shares of Common Stock in connection
    with the Company's business combinations with the ExpressBill Companies. In
    connection with these business combinations, the former shareholders of the
    ExpressBill Companies received the right to demand the registration of the
    shares being offered hereby pursuant to a Registration Rights Agreement,
    dated February 27, 1998.
(4) The shares of Common Stock beneficially owned by Mr. McIntyre include: (a)
    854,000 shares of Common Stock held by Aggie Titan Limited Partnership, of
    which Mr. McIntyre is the Managing General Partner; and (b) 105,000 shares
    of Common Stock held by The McIntyre Charitable Remainder Trust, of which
    Mr. McIntyre is the trustee, and of which Mr. McIntyre and his wife are the
    sole beneficiaries. Of the shares indicated as being offered by Mr.
    McIntyre, 860,000 shares are held in the name of Mr. McIntyre individually
    and 105,000 shares are held in the name of The McIntyre Charitable Remainder
    Trust.
(5) Mr. Goad is the Chairman of the Board, Co-Chief Executive Officer and a
    Director of ENVOY. See "Management."
(6) Includes 400,000 shares issuable pursuant to exercisable options for the
    purchase of Common Stock. Also includes 13,126 shares of Common Stock held
    by Mr. Goad's spouse. Mr. Goad disclaims beneficial ownership of the shares
    held by his spouse.
(7) Mr. Kever is the President, Co-Chief Executive Officer and a Director of
    ENVOY. See "Management."
(8) Includes 490,000 shares issuable pursuant to exercisable options for the
    purchase of Common Stock.
 
                                       36
<PAGE>   39
 
                                  UNDERWRITING
 
     Upon the terms and subject to conditions stated in the Underwriting
Agreement dated the date hereof, each of the Underwriters named below (the
"Underwriters"), has severally agreed to purchase, and the Selling Shareholders
have agreed to sell to each such Underwriter, shares of Common Stock which equal
the number of shares of Common Stock set forth opposite the name of such
Underwriter below.
 
   
<TABLE>
<CAPTION>
                                                              NUMBER OF
                        UNDERWRITER                            SHARES
                        -----------                           ---------
<S>                                                           <C>
Smith Barney Inc............................................
Morgan Stanley & Co. Incorporated...........................
J.C. Bradford & Co. ........................................
Hambrecht & Quist LLC.......................................
Loewenbaum & Company Incorporated...........................
                                                              ---------
          Total.............................................  1,750,000
                                                              =========
</TABLE>
    
 
     The Underwriting Agreement provides that the obligations of the several
Underwriters to pay for and accept delivery of the shares are subject to
approval of certain legal matters by counsel and to certain other conditions.
The Underwriters are obligated to take and pay for all shares of Common Stock
offered hereby (other than those covered by the over-allotment option described
below) if any such shares are taken.
 
     The Underwriters propose to offer a portion of the shares directly to the
public at the public offering price set forth on the cover page of this
Prospectus and a portion of the shares to certain dealers at a price which
represents a concession not in excess of $          per share below the public
offering price. The Underwriters may allow, and such dealers may reallow, a
concession not in excess of $          per share to other underwriters or to
certain other dealers. After the initial offering of the shares to the public,
the public offering price and such concessions may be changed by the
Underwriters.
 
     The Selling Shareholders have granted to the Underwriters an option,
exercisable for 30 days from the date of this Prospectus, to purchase up to
262,500 additional shares of Common Stock at the price to public set forth on
the cover page of this Prospectus, less the underwriting discounts and
commissions. To the extent such option is exercised, each Selling Shareholder
will be obligated to sell approximately the same percentage of such additional
shares as the number of shares set forth opposite such Selling Shareholder's
name in the table of Selling Shareholders bears to the total number of shares
listed in such table. The Underwriters may exercise such option to purchase
additional shares solely for the purpose of covering over-allotments, if any, in
connection with the offering of the shares offered hereby. To the extent such
option is exercised, each Underwriter will be obligated, subject to certain
conditions, to purchase approximately the same percentage of such additional
shares as the number of shares set forth opposite each Underwriter's name in the
preceding table bears to the total number of shares listed in such table.
 
     The Company, the directors and certain officers of the Company and the
Selling Shareholders have agreed that they will not, without the prior written
consent of Smith Barney Inc., for a period of 90 days after the date of this
Prospectus, offer, sell, contract to sell, pledge or otherwise dispose of, or
file (or participate in the filing of) a registration statement with the SEC in
respect of, or establish or increase a put equivalent position or liquidate or
decrease a call equivalent position within the meaning of Section 16 of the
Securities and Exchange Act of 1934, as amended (the "Exchange Act"), with
respect to, any shares of capital stock of the Company or any securities
convertible into or exercisable or exchangeable for such capital stock, or
publicly announce an intention to effect any such transaction, other than with
respect to shares of Common Stock disposed of as bona fide gifts approved by
Smith Barney Inc. or capital stock in connection with certain acquisitions.
 
     The Company, the Selling Shareholders and the Underwriters have agreed to
indemnify each other against certain liabilities, including liabilities under
the Securities Act of 1933, as amended (the "Securities Act").
 
                                       37
<PAGE>   40
 
     In connection with the Offering and in compliance with applicable law, the
Underwriters may over-allot (i.e., sell more Common Stock than the total amount
shown on the list of Underwriters and participations which appear above) and may
effect transactions which stabilize, maintain or otherwise affect the market
price of the Common Stock at levels above those which might otherwise prevail in
the open market. Such transactions may include placing bids for the Common Stock
or effecting purchases of Common Stock for the purpose of pegging, fixing or
maintaining the price of the Common Stock for the purpose of reducing a short
position created in connection with the Offering. A short position may be
covered by exercise of the option described above in lieu of or in addition to
open market purchases. In addition, the contractual arrangements between the
Underwriters include a provision whereby, if the Underwriters purchase Common
Stock in the open market for the account of the Underwriters and the securities
purchased can be traced to a particular Underwriter or member of the selling
group, the Underwriters may require the Underwriter or selling group member in
question to purchase the Common Stock in question at the cost price to the
Underwriters or may recover from (or decline to pay to) the Underwriter or
selling group member in question the selling concession applicable to the
securities in question. The Underwriters are not required to engage in any of
these activities, and any such activities, if commenced, may be discontinued at
any time.
 
     Certain Underwriters and their affiliates have provided and may continue to
provide investment banking and other services to the Company. In particular, in
connection with the Company's business combinations with the ExpressBill
Companies in February 1998, Hambrecht & Quist LLC provided financial advisory
services to the Company, and received customary compensation therefor. Also, in
connection with this offering, Trilogy Capital Partners ("Trilogy") is being
paid a referral fee of $50,000 by the Underwriters. Trilogy provided financial
advisory services to the former shareholders of the ExpressBill Companies in
connection with the Company's business combinations with the ExpressBill
Companies, and may continue to provide such services to the former shareholders
of the ExpressBill Companies in the future.
 
                                 LEGAL MATTERS
 
     Certain legal matters with respect to the Common Stock offered hereby will
be passed upon for the Company and for Messrs. Goad and Kever by Bass, Berry &
Sims PLC, Nashville, Tennessee. Certain legal matters with respect to the Common
Stock offered hereby will be passed upon for the remaining Selling Shareholders
by Graham & James LLP, Palo Alto, California. Certain legal matters with respect
to the shares of Common Stock offered hereby will be passed upon for the
Underwriters by Dewey Ballantine LLP, New York, New York, who will rely on Bass,
Berry & Sims PLC for matters of Tennessee law.
 
                                    EXPERTS
 
     The consolidated financial statements and the schedule of ENVOY at December
31, 1997 and 1996, and for each of the three years in the period ended December
31, 1997, incorporated by reference in the registration statement, of which this
Prospectus forms a part, have been audited by Ernst & Young LLP, independent
auditors, as set forth in their report thereon incorporated by reference
elsewhere herein, and are based in part on the reports of Arthur Andersen LLP,
independent public accountants. The financial statements and schedule referred
to above are incorporated by reference herein in reliance upon such reports
given upon the authority of such firms as experts in accounting and auditing.
 
     With respect to the ExpressBill Companies, the financial statements of
Professional Office Services, Inc. and XpiData, Inc. incorporated by reference
in this Prospectus have been audited by Arthur Andersen LLP, independent public
accountants, as indicated in their report with respect thereto, and are
incorporated herein in reliance upon the authority of said firm as experts in
giving such reports. The financial statements of Automated Revenue Management,
Inc. have not been incorporated by reference herein due to the immaterial nature
of its financial position and results of operations.
 
                                       38
<PAGE>   41
 
                             AVAILABLE INFORMATION
 
     The Company is subject to the information requirements of the Exchange Act
and, in accordance therewith, files reports, proxy statements and other
information with the SEC. Such reports, proxy statements and other information
may be inspected and copied at the office of the SEC at Room 1024, 450 Fifth
Street, N.W., Washington, D.C. 20549 or at its Regional Offices located in the
Citicorp Center, Suite 1400, 500 West Madison Street, Chicago, Illinois 60661
and Seven World Trade Center, Suite 1300, New York, New York 10007. Copies of
such material also may be obtained from the Public Reference Section of the SEC,
450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates. The
Company's public filings are also available to the public at the web site
maintained by the SEC at "http://www.sec.gov." The Common Stock is listed on The
Nasdaq Stock Market, and such reports, proxy statements and other information
can also be inspected at the offices of Nasdaq Operations, 1735 K Street, N.W.,
Washington, D.C. 20006.
 
     The Company has filed with the SEC a Registration Statement on Form S-3,
including amendments thereto, relating to the Common Stock offered hereby (the
"Registration Statement"). This Prospectus, which is part of the Registration
Statement, does not contain all of the information set forth in the Registration
Statement and the exhibits and schedules thereto. For further information with
respect to the Company and the Common Stock offered hereby, reference is hereby
made to the Registration Statement and such exhibits and schedules, which may be
inspected and copied in the manner and at the locations described above.
Statements contained in this Prospectus as to the contents of any contract or
other document referred to are not necessarily complete and in each instance
reference is made to the copy of such contract or other document filed as an
exhibit to the Registration Statement or as previously filed with the SEC and
incorporated herein by reference.
 
               INCORPORATION OF CERTAIN INFORMATION BY REFERENCE
 
     The following documents or portions of documents filed by the Company with
the Commission are incorporated herein by reference:
 
          (1) Annual Report on Form 10-K for the year ended December 31, 1997.
 
          (2) Quarterly Report on Form 10-Q for the quarter ended March 31,
     1998.
 
          (3) Current Reports on Form 8-K dated February 23, 1998, February 27,
     1998 (as amended by Form 8-K/A, dated May 5, 1998) and July 2, 1998.
 
          (4) The description of the Common Stock contained in the Company's
     Registration Statement under the Exchange Act on Form 10 on November 1,
     1994, as amended through Post-Effective Amendment No. 4, filed on May 4,
     1995.
 
     All reports and other documents filed by the Company pursuant to Sections
13(a), 13(c), 14 or 15 (d) of the Exchange Act after the date of this Prospectus
and prior to the termination of the offering of Common Stock hereunder shall be
deemed to be incorporated by reference in this Prospectus and to be part hereof
from the filing date of such documents.
 
     Any statement contained in a document incorporated or deemed to be
incorporated by reference herein shall be deemed to be modified or superseded
for purposes of this Prospectus to the extent that a statement contained herein,
or in any other subsequently filed document that also is incorporated or is
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 Prospectus.
Subject to the foregoing, all information appearing in this Prospectus is
qualified in its entirety by the information appearing in the documents
incorporated herein by reference.
 
     THIS PROSPECTUS INCORPORATES DOCUMENTS BY REFERENCE WHICH ARE NOT PRESENTED
HEREIN OR DELIVERED HEREWITH. THESE DOCUMENTS ARE AVAILABLE UPON WRITTEN OR ORAL
REQUEST, AT NO CHARGE, FROM THE COMPANY. REQUESTS SHOULD BE DIRECTED TO THE
COMPANY, 15 CENTURY BOULEVARD, SUITE 600, NASHVILLE, TENNESSEE 37214, ATTENTION:
INVESTOR RELATIONS.
 
                                       39
<PAGE>   42
 
- ------------------------------------------------------
- ------------------------------------------------------
 
     NO DEALER, SALESPERSON OR ANY OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS
PROSPECTUS IN CONNECTION WITH THE OFFER CONTAINED HEREIN, AND, IF GIVEN OR MADE,
SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN
AUTHORIZED BY THE COMPANY OR BY ANY OF THE UNDERWRITERS. THIS PROSPECTUS DOES
NOT CONSTITUTE AN OFFER OF ANY SECURITIES OTHER THAN THOSE TO WHICH IT RELATES
OR AN OFFER TO SELL, OR A SOLICITATION OF AN OFFER TO BUY, THOSE TO WHICH IT
RELATES IN ANY STATE TO ANY PERSON TO WHOM IT IS NOT LAWFUL TO MAKE SUCH OFFER
IN SUCH STATE. THE DELIVERY OF THIS PROSPECTUS AT ANY TIME DOES NOT IMPLY THAT
THE INFORMATION HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS DATE.
 
                               ------------------
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                        PAGE
                                        ----
<S>                                     <C>
Prospectus Summary....................    3
Risk Factors..........................    6
Price Range of Common Stock and
  Dividend Policy.....................   12
Selected Consolidated Financial
  Data................................   13
Management's Discussion and Analysis
  of Financial Condition and Results
  of Operations.......................   14
Business..............................   27
Management............................   34
Selling Shareholders..................   36
Underwriting..........................   37
Legal Matters.........................   38
Experts...............................   38
Available Information.................   39
Incorporation of Certain Information
  by Reference........................   39
</TABLE>
    
 
- ------------------------------------------------------
- ------------------------------------------------------
- ------------------------------------------------------
- ------------------------------------------------------
 
                                1,750,000 SHARES
 
                            (ENVOY CORPORATION LOGO)
 
                                  COMMON STOCK
                                  ------------
 
                                   PROSPECTUS
 
   
                                AUGUST   , 1998
    
 
                                  ------------
                              SALOMON SMITH BARNEY
 
                           MORGAN STANLEY DEAN WITTER
 
                              J.C. BRADFORD & CO.
 
   
                               HAMBRECHT & QUIST
    
 
                              LOEWENBAUM & COMPANY
                                  INCORPORATED
 
- ------------------------------------------------------
- ------------------------------------------------------
<PAGE>   43
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 
<TABLE>
<CAPTION>
                                                                           SELLING
                                                              COMPANY    SHAREHOLDERS
                                                              --------   ------------
<S>                                                           <C>        <C>
SEC registration fee........................................  $     --     $ 23,377
NASD fee....................................................        --        8,425
*Accounting fees and expenses...............................    90,000           --
*Legal fees and expenses....................................   100,000       30,000
*Printing and engraving expenses............................    22,000      118,198
*Blue Sky fees and expenses.................................    10,000           --
*Miscellaneous expenses.....................................     8,000           --
                                                              --------     --------
          *Total............................................  $230,000     $180,000
                                                              ========     ========
</TABLE>
 
- ---------------
 
* Estimated.
 
ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
     The Tennessee Business Corporation Act ("TBCA") provides that a corporation
may indemnify any of its directors and officers against liability incurred in
connection with a proceeding if (i) the director or officer acted in good faith,
(ii) in the case of conduct in his or her official capacity with the
corporation, the director or officer reasonably believed such conduct was in the
corporation's best interest, (iii) in all other cases, the director or officer
reasonably believed that his or her conduct was not opposed to the best interest
of the corporation, and (iv) in connection with any criminal proceeding, the
director or officer had no reasonable cause to believe that his or her conduct
was unlawful. In actions brought by or in the right of the corporation, however,
the TBCA provides that no indemnification may be made if the director or officer
was adjudged to be liable to the corporation. In cases where the director or
officer is wholly successful, on the merits or otherwise, in the defense of any
proceeding instigated because of his or her status as an officer or director of
a corporation, the TBCA mandates that the corporation indemnify the director or
officer against reasonable expenses incurred in the proceeding. The TBCA also
provides that in connection with any proceeding charging improper personal
benefit to an officer or director, no indemnification may be made if such
officer or director is adjudged liable on the basis that personal benefit was
improperly received. Notwithstanding the foregoing, the TBCA provides that a
court of competent jurisdiction, upon application, may order that an officer or
director be indemnified for reasonable expenses if, in consideration of all
relevant circumstances, the court determines that such individual is fairly and
reasonably entitled to indemnification, whether or not the standard of conduct
set forth above was met.
 
     Article 8 of the Amended and Restated Charter (the "Charter") of the
Company and its Amended and Restated Bylaws (the "Bylaws") provide that the
Company shall indemnify against liability, and advance expenses to, any present
or former director or officer of the Company to the fullest extent allowed by
the TBCA, as amended from time to time, or any subsequent law, rule or
regulation adopted in lieu thereof. Additionally, the Charter provides that no
director of the Company shall be personally liable to the Company or any of its
shareholders for monetary damages for breach of any fiduciary duty except for
liability arising from (i) any breach of a director's duty of loyalty to the
Company or its shareholders, (ii) acts or omissions not in good faith or which
involved intentional misconduct or a knowing violation of law, (iii) any
unlawful distributions, or (iv) receiving any improper personal benefit. The
Company has entered into indemnification agreements with each of the Company's
directors and executive officers.
 
     The Company currently has in effect an executive liability policy which
provides coverage for its directors and officers in amounts of $15.0 million per
claim and $15.0 million for annual aggregate claims. The policy covers any
error, misstatement, act or omission, or breach of duty committed by a director
or officer, subject to certain specified exclusions.
                                      II-1
<PAGE>   44
 
     The proposed form of the Underwriting Agreement filed as Exhibit 1 to this
Registration Statement contains certain provisions relating to the
indemnification of the Company and its controlling persons by the Underwriters
and relating to the indemnification of the Underwriters by the Company and its
controlling persons.
 
ITEM 16.  EXHIBITS.
 
     See Index to Exhibits on Page II-4.
 
ITEM 17.  UNDERTAKINGS.
 
     The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
Registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange
Act 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.
 
     Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers or persons controlling the registrant
pursuant to the foregoing provisions, the registrant has been informed that in
the opinion of the SEC such indemnification is against public policy as
expressed in the Securities 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 hereunder, 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 Securities Act and will be governed by the final adjudication
of such issue.
 
     The undersigned Registrant hereby undertakes that:
 
          (1) For purposes of determining any liability under the Securities
     Act, the information omitted from the form of prospectus filed as part of
     this Registration Statement in reliance upon Rule 430A and contained in a
     form of prospectus filed by the Registrant pursuant to Rule 424(b)(1) or
     (4) or 497(h) under the Securities Act shall be deemed to be part of this
     Registration Statement as of the time it was declared effective.
 
          (2) For the purpose of determining any liability under the Securities
     Act, each post-effective amendment that contains a form of prospectus 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-2
<PAGE>   45
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act of 1933, as amended, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on this Form S-3 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in Nashville, Tennessee on August 4, 1998.
    
 
                                          ENVOY CORPORATION
 
                                          By:     /s/ FRED C. GOAD, JR.
                                            ------------------------------------
                                                     Fred C. Goad, Jr.
                                                Chairman, Co-Chief Executive
                                                    Officer and Director
 
     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.
 
   
<TABLE>
<CAPTION>
                        NAME                                        TITLE                     DATE
                        ----                                        -----                     ----
<C>                                                    <S>                               <C>
 
                /s/ FRED C. GOAD, JR.                  Chairman of the Board, Co-Chief   August 4, 1998
- -----------------------------------------------------    Executive Officer and Director
                  Fred C. Goad, Jr.
 
                          *                            President, Co-Chief Executive     August 4, 1998
- -----------------------------------------------------    Officer and Director
                    Jim D. Kever
 
                          *                            Senior Vice President, Chief      August 4, 1998
- -----------------------------------------------------    Financial Officer and Director
                  Kevin M. McNamara                      (Principal Accounting Officer)
 
                          *                            Senior Vice President of          August 4, 1998
- -----------------------------------------------------    Corporate Strategy and
                  Harlan F. Seymour                      Development and Director
 
                          *                            Director                          August 4, 1998
- -----------------------------------------------------
                   William E. Ford
 
                          *                            Director                          August 4, 1998
- -----------------------------------------------------
                  W. Marvin Gresham
 
                          *                            Director                          August 4, 1998
- -----------------------------------------------------
                 Laurence E. Hirsch
 
                          *                            Director                          August 4, 1998
- -----------------------------------------------------
                  Richard A. McStay
</TABLE>
    
 
*By:    /s/ FRED C. GOAD, JR.
     -------------------------------
            Fred C. Goad, Jr.
            Attorney-in-fact
 
                                      II-3
<PAGE>   46
 
                               INDEX TO EXHIBITS
 
   
<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER         DESCRIPTION OF EXHIBIT
  -------        ----------------------
  <C>       <C>  <S>
      1      --  Underwriting Agreement*
    4.1      --  Charter, as amended(1)
    4.2      --  Shareholder Rights Plan(2)
    4.3      --  Registration Rights Agreement dated March 6, 1996 by and
                 among ENVOY, General Atlantic Partners 25, L.P., GAP
                 Coinvestment Partners, L.P. and First Union Capital
                 Partners, Inc.(3)
    4.4      --  Registration Rights Agreement dated March 6, 1996 by and
                 among ENVOY and the Purchasers set forth on the signature
                 pages thereto(3)
    4.5      --  Registration Rights Agreement dated February 27, 1998, by
                 and between ENVOY and the Persons set forth on the signature
                 pages thereto(4)
      5      --  Opinion of Bass, Berry & Sims PLC**
   23.1      --  Consent of Ernst & Young LLP
   23.2      --  Consent of Arthur Andersen LLP
   23.3      --  Consent of Bass, Berry & Sims PLC (included in Exhibit 5)**
     24      --  Power of Attorney (included on page II-3)**
</TABLE>
    
 
- ---------------
 
  * To be filed by amendment.
 
  ** Previously filed.
 
(1) Charter as originally amended incorporated by reference to the Registrant's
    Annual Report on Form 10-K for the year ended December 31, 1995 and
    Certificate of Designations setting forth terms of Series B Preferred Stock
    incorporated by reference to the Registrant's Annual Report on Form 10-K for
    the year ended December 31, 1997.
(2) Incorporated by reference to the Registrant's Form 10, as amended,
    Commission File No. 0-25062.
(3) Incorporated by reference to the Registrant's Current Report on Form 8-K
    filed March 21, 1996.
(4) Incorporated by reference to the Registrant's Annual Report on Form 10-K for
    the year ended December 31, 1997.

<PAGE>   1
                                                                    Exhibit 23.1


               Consent of Ernst & Young LLP, Independent Auditors

We consent to the reference to our firm under the caption "Experts" in Amendment
No. 2 to the Registration Statement (Form S-3 No. 333-52483) and related
Prospectus of ENVOY Corporation for the registration of its common stock and to
the incorporation by reference therein of our report dated March 5, 1998, except
for Notes 1 and 4, as to which the date is April 29, 1998, and Note 2, as to
which the date is June 26, 1998, with respect to the consolidated financial
statements and schedule of ENVOY Corporation for the year ended December 31,
1997, included in its Amendment No. 2 to Current Report on Form 8-K/A dated 
August 5, 1998 to be filed with the Securities and Exchange Commission.





Nashville, Tennessee
August 5, 1998
                                           /s/ ERNST & YOUNG LLP



<PAGE>   1
                                                                    Exhibit 23.2

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation by
reference in this registration statement on Form S-3, as amended, of our report
dated February 11, 1998 relating to the financial statements of Professional
Office Services, Inc. as of December 31, 1997 and 1996 and for each of the three
years in the period ended December 31, 1997 and our report dated January 30,
1998 relating to XpiData, Inc. as of December 31, 1997 and 1996 and for each of
the three years in the period ended December 31, 1997 included in Envoy
Corporation's Current Report on Form 8-K and to all references to our Firm
included in this registration statement.


                                           /s/ Arthur Andersen LLP
                                           ----------------------- 
                                               ARTHUR ANDERSEN LLP


Nashville, Tennessee
July 31, 1998



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