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                                                                    EXHIBIT 99.2
 
PROXY FOR HOLDERS OF SERIES F PREFERRED STOCK OF HEALTH DATA SCIENCES
CORPORATION
 
               PROXY SOLICITED BY THE BOARD OF DIRECTORS FOR THE
                SPECIAL MEETING OF STOCKHOLDERS ON       , 1996
 
    The undersigned hereby appoints             and             and each of
them, proxies, with full power of substitution and resubstitution, for and in
the name of the undersigned, to vote all shares of Series F Preferred Stock of
Health Data Sciences Corporation (the "Company") which the undersigned would be
entitled to vote if personally present at the Special Meeting of Stockholders to
be held on         , 1996, at 10:00 a.m., local time, at the Mission Inn 3649
Seventh Street, Riverside, California, and at any adjournment thereof, upon the
matters described in the accompanying Notice of Special Meeting of Stockholders
and Proxy Statement/Prospectus, receipt of which is hereby acknowledged, and
upon any other business that may properly come before the meeting or any
adjournment thereof. Said proxies are directed to vote on the matters described
in the Notice of Special Meeting and Proxy Statement/Prospectus as follows, and
otherwise in their discretion upon such other business as may properly come
before the meeting or any adjournment thereof.
 
1. To approve the Merger Agreement dated as of May 23, 1996 among the Company,
Medaphis Corporation and RAKSub, Inc.
 
                / /  FOR                / /  AGAINST        / /  ABSTAIN
 
2. In the discretion of the proxies, on any other matter than may properly come
before the meeting or any adjournment thereof.
 
                (CONTINUED, AND TO BE SIGNED, ON THE OTHER SIDE)
 
    THIS PROXY WILL BE VOTED AS DIRECTED, BUT IF NO DIRECTION IS INDICATED, THE
PROXY WILL BE VOTED FOR THE PROPOSALS ON THE OTHER SIDE.
 
                                                  DATE:
                                                        -----------------------,
                                                  1996
 
                                                  ------------------------------
 
                                                  ------------------------------
 
                                                  Please sign exactly as your
                                                  name or names appear hereon.
                                                  Where more than one owner is
                                                  shown above, each should sign.
                                                  When signing in a fiduciary or
                                                  representative capacity,
                                                  please give full title. If
                                                  this proxy is submitted by a
                                                  corporation, it should be
                                                  executed in the full corporate
                                                  name by a duly authorized
                                                  officer. If a partnership,
                                                  please sign in partnership
                                                  name by authorized person.
 
PLEASE COMPLETE, DATE AND SIGN THIS PROXY AND RETURN IT PROMPTLY IN THE ENCLOSED
ENVELOPE, WHETHER OR NOT YOU PLAN TO ATTEND THE SPECIAL MEETING. IF YOU ATTEND
THE SPECIAL MEETING, YOU MAY VOTE IN PERSON IF YOU WISH, EVEN IF YOU HAVE
PREVIOUSLY RETURNED YOUR PROXY.