Medicare (United States)

Medicare (United States)
Name	Medicare
Caption	Seal of the United States Department of Health and Human Services
Established	1965
Type	Social insurance program
Administered by	Centers for Medicare & Medicaid Services
Beneficiaries	Older adults, younger people with disabilities
Funding	Payroll taxes, premiums, general revenues

Medicare (United States) is a federal social insurance program providing health coverage to people meeting age or disability criteria. Created as part of landmark legislation in the 1960s, it interacts with multiple statutes, agencies, and political actors in the United States Congress, Executive Office of the President of the United States, and federal courts. The program's evolution has involved administrations such as Lyndon B. Johnson, Richard Nixon, George W. Bush, and Barack Obama and legislation including major acts enacted by the 89th United States Congress and the 109th United States Congress.

History

Medicare originated in the mid-1960s amid debates involving Harry S. Truman, Dwight D. Eisenhower, and policy advocates in the American Medical Association and AARP; it was enacted under the Social Security Amendments of 1965 signed by Lyndon B. Johnson. Subsequent expansions and reforms occurred through measures tied to the Social Security Act, decisions of the Supreme Court of the United States, and health policy initiatives under presidents such as Richard Nixon and Bill Clinton. The program's 2003 expansion establishing a prescription drug benefit was enacted as the Medicare Prescription Drug, Improvement, and Modernization Act of 2003 under George W. Bush, while the 2010 overhaul influencing payment models and preventive services came via the Patient Protection and Affordable Care Act under Barack Obama. Litigation and administrative rulemaking by the United States Department of Health and Human Services and the Centers for Medicare & Medicaid Services have further shaped eligibility, benefits, and payment policies.

Structure and Eligibility

Medicare comprises multiple parts created by statute and regulation, administered by the Centers for Medicare & Medicaid Services within the United States Department of Health and Human Services. Eligibility hinges on entitlement programs linked to the Social Security Administration and criteria set by Congress, including age 65 and over, entitlement due to disability determinations from the Social Security Administration, or diagnosis of end-stage renal disease determined by federal regulation. The program's architecture involves statutory components established in the Social Security Act and modified in later enactments such as the Balanced Budget Act of 1997 and the Medicare Modernization Act of 2003.

Benefits and Coverage

Medicare's benefit design specifies covered services, cost sharing, and provider payment based on rules promulgated by the Centers for Medicare & Medicaid Services and statutes passed by the United States Congress. Hospital benefits trace to inpatient payment systems that evolved from the Diagnosis-Related Group methodology, while physician services are paid under the Medicare Physician Fee Schedule. The 2003 prescription drug benefit created a voluntary outpatient drug program administered through private plans contracted by federal agencies. Preventive services and quality reporting requirements were augmented by provisions in the Affordable Care Act, and program coverage interfaces with Medicaid for dual-eligible beneficiaries and with private insurance markets regulated by state agencies such as state departments of insurance.

Financing and Costs

Medicare financing combines dedicated payroll tax revenues authorized in the Internal Revenue Code, beneficiary premiums, and federal general revenues appropriated through the annual budget process submitted by the Office of Management and Budget and enacted by the United States Congress. Long-term financing debates reference actuary projections by the Medicare Trustees and analyses by the Congressional Budget Office, prompting reforms such as payment rate adjustments under the Balanced Budget Act of 1997 and incentive programs under the Affordable Care Act. Cost pressures involve debates over provider payment rates, prescription drug prices influenced by decisions in the United States Court of Appeals, and bargaining authority considered in legislative proposals advanced by congressional committees such as the Senate Finance Committee and the House Ways and Means Committee.

Enrollment and Administration

Enrollment processes are coordinated between the Social Security Administration and the Centers for Medicare & Medicaid Services, with outreach involving organizations like the AARP and state health insurance assistance programs. Administrative oversight includes audit and program integrity functions performed by the Office of Inspector General (United States Department of Health and Human Services) and enforcement actions pursued by the Department of Justice (United States). Private plan participation is governed by contracts under federal procurement rules and oversight by the Centers for Medicare & Medicaid Services and state regulators, while payment rulemaking follows administrative procedures shaped by precedents from the United States Court of Appeals for the Federal Circuit and other federal courts.

Impact and Criticisms

Medicare has substantially altered health care access for older Americans, affecting markets studied by academics at institutions like Harvard University, Johns Hopkins University, and University of Pennsylvania. Analyses by organizations such as the Kaiser Family Foundation and the Brookings Institution assess impacts on beneficiary outcomes, provider behavior, and fiscal sustainability. Criticisms include concerns about rising costs debated in hearings before the United States Congress, disparities in coverage highlighted by public interest groups, and litigation over regulatory interpretations adjudicated by the Supreme Court of the United States and federal appellate courts. Policy proposals to address these criticisms have been advanced by presidential administrations, congressional committees, and nongovernmental organizations including think tanks and advocacy groups.

Category:Health insurance in the United States