A letter report issued by the General Accounting Office with an abstract that begins "Home and community-based settings have become a growing part of states' Medicaid long-term care programs, serving as an alternative to care in institutional settings, such as nursing homes. To cover such services, however, states often obtain waivers from certain federal statutory requirements. GAO was asked to review (1) trends in states' use of Medicaid home and community-based service (HCBS) waivers, particularly for the elderly, (2) state quality assurance approaches, including available data on the quality of care provided to elderly individuals through waivers, and (3) the adequacy of federal oversight of state waivers. GAO is recommending that the Administrator of CMS take steps to (1) better ensure that state quality assurance efforts are adequate to protect the health and welfare of HCBS waiver beneficiaries, and (2) strengthen federal oversight of the growing HCBS waiver programs. Although CMS raised certain concerns about aspects of the report, such as the respective state and federal roles in quality assurance and the potential need for additional federal oversight resources, CMS generally concurred with the recommendations."