[Excerpt] The Civilian Health and Medical Program of the Department of Veterans Affairs (CHAMPVA) was established by the Veterans Health Care Expansion Act of 1973 (P.L. 93-82). CHAMPVA is primarily a health insurance program where certain eligible dependents and survivors of veterans receive care from private sector health care providers. The program is administered by the Veterans Health Administration (VHA), Chief Business Office, Purchased Care, which is headquartered in Denver, Colorado.