HMS Holdings Corp. is a holding company. The Company, through its subsidiaries, operates in the United States healthcare insurance benefit cost containment marketplace. It provides coordination of benefits services to government, and private healthcare payers and sponsors. Its payment integrity services ensure that healthcare claims billed are accurate and appropriate. It offers services to state Medicaid agencies, government health agencies and health plans, including Medicaid managed care, Medicare Advantage and group and individual health lines of business; government and private employers; and other healthcare payers and sponsors, including child support agencies. It serves approximately 45 state Medicaid programs and the District of Columbia, and government health agencies, including Centers for Medicare & Medicaid Services (CMS) and the Veterans Health Administration (VHA). It also provides services to approximately 250 health plans and supports their multiple lines of business.