 Currently, managed care is the most common health care delivery system in Medicaid.In 2007, nearly two-thirds of all Medicaid beneficiaries are enrolled in some form of managed care – mostly, traditional health maintenance organizations (HMO) and primary care case management (PCCM) arrangements.This amounted to 29 million beneficiaries, of which 19 million individuals were covered by fully capitated arrangements and 5.8 million were enrolled in Primary Care Case Management.