1 EXHIBIT 21 SUBSIDIARIES OF THE REGISTRANT Medaphis Corporation owns 100% of the capital stock of each of the following corporations: (i) Healthcare Recoveries, Inc., a Delaware corporation; (ii) Medaphis Physician Services Corporation, a Georgia corporation; (iii) Gottlieb's Financial Services, Inc., a Georgia corporation; (iv) Medical Management Sciences, Inc., a Maryland corporation; (v) Medaphis Services Corporation, a Georgia corporation; (vi) Medaphis Services Holding Corporation, a Georgia corporation; (vii) Medaphis Healthcare Information Technology Company, a Georgia corporation; (viii) Automation Atwork, a California corporation; (ix) Consort Technologies, Inc., a Georgia corporation; (x) Health Data Sciences Corporation, a Delaware corporation; (xi) Imonics Corporation, a Georgia corporation; (xii) Rapid Systems Solutions, Inc., a Maryland corporation; and (xiii) BSG Corporation, a Delaware corporation. Medaphis Physician Services Corporation owns 100% of the capital stock of Medaphis Information Processing Corporation, a Georgia corporation. Medaphis Services Corporation owns 100% of the capital stock of each of the following corporations: (i) ARTRAC Corporation, a Georgia corporation; (ii) AssetCare, Inc., a Georgia corporation; (iii) National Healthcare Technologies, Inc., an Indiana corporation; and 2 (iv) Central Healthcare Services, Inc., a Georgia corporation. ARTRAC Corporation owns 100% of the capital stock of ARTRAC Healthcare Resources, Inc., a Georgia corporation. AssetCare, Inc. owns 100% of Amerikids, a California corporation. Central Healthcare Services, Inc. owns 100% of the capital stock of Shure Communications and Technologies, Inc., a Texas corporation. Health Data Sciences Corporation owns 100% of the capital stock of Health Data Sciences, Limited, a foreign subsidiary formed in Canada. Imonics Corporation owns 100% of the capital stock of Imonics GmbH and 50% of the capital stock of Bertelsmann Imonics GmbH & Co. KG, both of which are foreign subsidiaries formed in Germany. BSG Corporation owns 100% of the capital stock of BSG Alliance/IT, Inc., a Delaware corporation and BSG Capital, Inc., a Delaware corporation. BSG Alliance/IT, Inc. owns 100% of the capital stock of SageComm International Limited, a foreign subsidiary formed in the U.K. BSG Capital, Inc. owns 51% of the capital stock of alliance/IT L.L.C., a Delaware Limited Liability Company. -2-