Exhibit 99(C) VOTING AGREEMENT VOTING AGREEMENT (the "AGREEMENT"), dated as of May 16, 2000, among the undersigned stockholder (the "STOCKHOLDER") of The TriZetto Group, Inc., a Delaware corporation ("TRIZETTO"), and IMS Health Incorporated, a...Voting Agreement • May 19th, 2000 • Ims Health Inc • Services-computer processing & data preparation • Delaware
