NEWPORT BEACH, Calif. – December 22, 2004 – The TriZetto Group, Inc. (Nasdaq:TZIX) announced that yesterday, it completed the purchase of all of the 12,142,857 shares of TriZetto common stock held by IMS Health Incorporated (NYSE:RX) for $6.75 per share. TriZetto will hold 5,542,857 shares as treasury stock, and has placed the remaining 6,600,000 shares with ValueAct Capital.

"I am pleased to consummate this share repurchase," said Jeff Margolis, TriZetto's Chairman and Chief Executive Officer. "We believe it creates significant near and long-term value for shareholders by removing what some perceived as an overhang to our stock. Over the next several years, we expect revenues from new products and services, in combination with ongoing cost controls, to drive strong profit expansion and free cash flow."

"We are excited to partner with TriZetto in completing this transaction," said Jeff Ubben, Managing Partner of ValueAct Capital. "We believe in the long-term value of TriZetto and are pleased to have a significant investment in the company, which we believe can enhance value to all shareholders." Mason Morfit, Partner at ValueAct Capital, added, "As proponents generally of large scale share repurchases, we are pleased to have enabled TriZetto to retire a meaningful percentage of its outstanding shares."

On December 3, 2004, IMS Health made an irrevocable offer to sell to TriZetto all of the shares of TriZetto common stock that it acquired in connection with TriZetto's acquisition of Erisco Managed Care Technologies, Inc. in 2000. The offer was made pursuant to the terms of a stockholder agreement entered into at the time of the acquisition.

"While we believe this transaction will have significant long term benefits, we expect it to be neutral to modestly accretive to 2005 earnings per share," noted TriZetto's Chief Financial Officer, Jim Malone. "We anticipate providing our 2005 guidance in early January."

About ValueAct Capital

VALUEACT CAPITAL, a San Francisco-based investment partnership with approximately $1.6 billion in investments, focuses primarily on making minority investments, and a select number of control investments, in small-capitalization public companies. The Principals have demonstrated expertise in sourcing strategic-block investments in companies they believe to be fundamentally undervalued, and then working with management and/or the company's board to implement strategies that generate superior returns on invested capital. For additional information about VALUEACT CAPITAL, please visit www.valueactcapital.com.

About TriZetto

TriZetto serves the payer market, which is comprised primarily of national and regional health insurance plans, and benefits administrators that provide transaction services to self-insured employer groups. The company offers a broad portfolio of information technology products, including software, services and consulting, tailored to the needs of healthcare payers. Headquartered in Newport Beach, Calif., TriZetto can be reached at 949-719-2200 or www.trizetto.com.

Important Notice Regarding Forward-Looking Statements

This press release contains forward-looking statements that involve risks and uncertainties. The forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements may include statements about future revenues, profits, and financial results, the market for TriZetto's services, future service offerings, industry trends, client and partner relationships, TriZetto's operational capabilities, future financial structure, uses of cash or proposed transactions. Actual results may differ materially from those stated in any forward-looking statements based on a number of factors, including the effectiveness of TriZetto's implementation of its business plan, the market's acceptance of TriZetto's new and existing products and services, the timing of new bookings, risks associated with management of growth, reliance on third parties to supply key components of TriZetto's services, attraction and retention of employees, variability of quarterly operating results, competitive factors, risks associated with acquisitions, changes in demand for third party products or solutions which form the basis of TriZetto's service and product offerings, financial stability of our customers, the ability of TriZetto to meet its contractual obligations to customers, including service level and disaster recovery commitments, changes in government laws and regulations and risks associated with rapidly changing technology, as well as the other risks identified in TriZetto's SEC filings, including, but not limited to, its annual report on Form 10-K and quarterly reports on Form 10-Q, copies of which may be obtained by contacting TriZetto's investor relations department at 949-719-2225 or at TriZetto's web site at www.trizetto.com. All information in this release is as of December 22, 2004. TriZetto undertakes no duty to update any forward-looking statement to conform the statement to actual results or changes in the company's expectations.

CONTACTS:

Media:
Audrey McDill
303-495-7197
audrey.mcdill@trizetto.com

Information

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