Expenditures for growth hormone (GH) in the United States approximates 400 million dollars annually. There is considerable controversy and variation around both the indications for GH treatment and insurance coverage decisions involving GH treatment. To address these issues, Harvard Community Health Plan (HCHP), now merged with Pilgrim Health Care to form Harvard Pilgrim Health Care (HPHC), developed a policy and implementation plan in 1992 which limited access to GH to those conditions for which GH has been shown to be effective. The 4-year experience of the HPHC Growth Hormone Review Committee, which determines by case review whether criteria for GH coverage are met, is described. The result has been a more rational, equitable approach to decisions about GH treatment coverage, and significant cost reductions. Caution is warranted in expanding access to GH because the potential for serious side effects has not been completely eliminated. Four years after the inception of the policy and approval process (1992-1995), it is estimated that savings have exceeded 1 million dollars. Growth hormone prescribing costs decreased from 13.4% of total to 4.4% of total drug costs 4 years after the new policy was implemented. This approach to policy development and implementation may be applicable to managing high-cost pharmaceuticals and advanced technology in other settings.