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                                                                      EXHIBIT 11
 
                              MEDAPHIS CORPORATION
 
              COMPUTATION OF BASIC AND DILUTED EARNINGS PER SHARE
               THREE AND SIX MONTHS ENDED JUNE 30, 1998 AND 1997
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 


                                                         THREE MONTHS ENDED    SIX MONTHS ENDED
                                                              JUNE 30,             JUNE 30,
                                                         ------------------   ------------------
DESCRIPTION                                                1998      1997       1998      1997
- -----------                                              --------   -------   --------   -------
                                                         (IN THOUSANDS, EXCEPT PER SHARE NUMBER)
                                                                             
Weighted average shares outstanding during the
  period...............................................    77,136    72,443     75,318    72,339
Shares issuable upon assumed exercise of stock options,
  less amounts assumed repurchased under the treasury
  stock method.........................................        --     2,706         --     2,644
                                                         --------   -------   --------   -------
          Total weighted average common stock and
            common stock equivalents outstanding during
            the period.................................    77,136    75,149     75,318    74,983
                                                         ========   =======   ========   =======
Net loss before extraordinary item.....................  $(29,816)  $(1,260)  $(34,966)  $(4,324)
Extraordinary items, net of tax........................        --    76,391     (5,557)   76,391
                                                         --------   -------   --------   -------
          Net income (loss)............................  $(29,816)  $75,131   $(40,523)  $72,067
                                                         ========   =======   ========   =======
Net income (loss) per common share:
  Net loss before extraordinary item...................  $  (0.39)  $ (0.02)  $  (0.46)  $ (0.06)
  Extraordinary items, net of tax......................        --      1.02      (0.08)     1.02
                                                         --------   -------   --------   -------
          Net income (loss)............................  $  (0.39)  $  1.00   $  (0.54)  $  0.96
                                                         ========   =======   ========   =======