Medicare (United States)
Medicare is a federal health insurance program in the United States for people age 65 or older and younger people with disabilities, including those with end stage renal disease and amyotrophic lateral sclerosis (ALS or Lou Gehrig's disease). It was begun in 1965 under the Social Security Administration and is now administered by the Centers for Medicare and Medicaid Services (CMS).
This article is about the United States government program. For other uses, see Medicare (disambiguation).Agency overview
July 30, 1965
7500 Security Boulevard, Baltimore, Maryland 21244, U.S.
- Chiquita Brooks-LaSure, Administrator
In 2022, Medicare provided health insurance for 65.0 million individuals—more than 57 million people aged 65 and older and about 8 million younger people.[1] According to annual Medicare Trustees reports and research by Congress' MedPAC group, Medicare covers about half of healthcare expenses of those enrolled. Enrollees almost always cover most of the remaining costs by taking additional private insurance and/or by joining a public Medicare Part C and/or Medicare Part D health plan. In 2022, spending by the Medicare Trustees topped $900 billion per the Trustees report Table II.B.1, of which $423 billion came from the U.S. Treasury and the rest primarily from the Part A Trust Fund (which is funded by payroll taxes) and premiums paid by beneficiaries. Households that retired in 2013 paid only 13 to 41 percent of the benefit dollars they are expected to receive.[2][3]
No matter which of those supplemental options the beneficiaries choose—private insurance or public health plans—to make up for the shortfall of what Medicare covers (or if they choose to do nothing), beneficiaries also have other healthcare-related costs. These additional costs can include but are not limited to Medicare Part A, B and D deductibles and Part B and C co-pays; the costs of long-term custodial care (which Medicare does not consider health care); the cost of annual physical exams (for those not on Part C health plans almost all of which include physicals); and the costs related to basic Medicare's lifetime and per-incident limits.
Medicare is divided into four Parts: A, B, C and D. Part A covers hospital, skilled nursing, and hospice services. Part B covers outpatient services. Part D covers self-administered prescription drugs. Additionally, Part C is an alternative that allows patients to choose their own plans with different benefit structures and that provide the same services as Parts A and B, almost always with additional benefits. The specific details on these four Parts are:
Financing[edit]
Medicare has several sources of financing.
Part A's inpatient admitted hospital and skilled nursing coverage is largely funded by revenue from a 2.9% payroll tax levied on employers and workers (each pay 1.45%). Until December 31, 1993, the law provided a maximum amount of compensation on which the Medicare tax could be imposed annually, in the same way that the Social Security payroll tax operates.[21] Beginning on January 1, 1994, the compensation limit was removed. Self-employed individuals must calculate the entire 2.9% tax on self-employed net earnings (because they are both employee and employer), but they may deduct half of the tax from the income in calculating income tax.[22] Beginning in 2013, the rate of Part A tax on earned income exceeding $200,000 for individuals ($250,000 for married couples filing jointly) rose to 3.8%, in order to pay part of the cost of the subsidies to people not on Medicare mandated by the Affordable Care Act.[23]
In 2022, Medicare spending was over $900 billion, near 4% of U.S. gross domestic product according to the Trustees Figure 1.1 and over 15% of total US federal spending.[24] Because of the two Trust funds and their differing revenue sources (one dedicated and one not), the Trustees analyze Medicare spending as a percent of GDP rather than versus the Federal budget.
The aging of the Baby Boom generation into Medicare is projected by 2030 (when the last of the baby boom turns 65) to increase enrollment to more than 80 million. In addition, the fact that the number of payroll tax payors per enrollee will decline over time and that overall health care costs in the nation are rising pose substantial financial challenges to the program. Medicare spending is projected to increase from near 4% of GDP in 2022 to almost 6% in 2046.[24] Baby-boomers are projected to have longer life spans, which will add to the future Medicare spending. In response to these financial challenges, Congress made substantial cuts to future payouts to providers (primarily acute care hospitals and skilled nursing facilities) as part of PPACA in 2010 and the Medicare Access and CHIP Reauthorization Act of 2015 (MACRA) and individual Congresspeople have offered many additional competing proposals to stabilize Medicare spending further. Many other factors have complicated the forecasting of Medicare Trust Fund health and spending trends including but not limited to the Covid pandemic, the overwhelming preference of people joining Medicare this century for Part C, and the increasing number of dual eligible (Medicaid and Medicare eligibility) beneficiaries.
In 2013 the Urban Institute published a report which analyzed the amounts that various households (single male, single female, married single-earner, married dual-earner, low income, average income, high income) contributed to the Medicare program over their lifetimes, and how much someone living to the statistically expected age would expect to receive in benefits.[2][3] They found differing amounts for the different scenarios, but even the group with the "worst" return on their Medicare taxes would have concluded their working years with $158,000 in Medicare contributions and growth (assuming annual growth equal to inflation plus 2%) but would receive $385,000 in Medicare benefits (both numbers are in 2013 inflation adjusted dollars).[2][3] Overall, the groups paid into the system 13 to 41 percent of what they were expected to receive.[2][3]
Cost reduction is influenced by factors including reduction in inappropriate and unnecessary care by evaluating evidence-based practices as well as reducing the amount of unnecessary, duplicative, and inappropriate care. Cost reduction may also be effected by reducing medical errors, investment in healthcare information technology, improving transparency of cost and quality data, increasing administrative efficiency, and by developing both clinical/non-clinical guidelines and quality standards.[25] Of course all of these factors relate to the entire United States health care delivery system and not just to Medicare.
Comparison with private insurance[edit]
Medicare differs from private insurance available to working Americans in that it is a social insurance program. Social insurance programs provide statutorily guaranteed benefits to the entire population (under certain circumstances, such as old age or unemployment). These benefits are financed in significant part through universal taxes. In effect, Medicare is a mechanism by which the state takes a portion of its citizens' resources to provide health and financial security to its citizens in old age or in case of disability, helping them cope with the cost of health care. In its universality, Medicare differs substantially from private insurers, which decide whom to cover and what benefits to offer to manage their risk pools and ensure that their costs do not exceed premiums.
Because the federal government is legally obligated to provide Medicare benefits to older and some disabled Americans, it cannot cut costs by restricting eligibility or benefits, except by going through a difficult legislative process, or by revising its interpretation of medical necessity. By statute, Medicare may only pay for items and services that are "reasonable and necessary for the diagnosis or treatment of illness or injury or to improve the functioning of a malformed body member", unless there is another statutory authorization for payment.[84] Cutting costs by cutting benefits is difficult, but the program can also achieve substantial economies of scale in the prices it pays for health care and administrative expenses—and, as a result, private insurers' costs have grown almost 60% more than Medicare's since 1970.[85][86] Medicare's cost growth is now the same as GDP growth and expected to stay well below private insurance's for the next decade.[87]
Because Medicare offers statutorily determined benefits, its coverage policies and payment rates are publicly known, and all enrollees are entitled to the same coverage. In the private insurance market, plans can be tailored to offer different benefits to different customers, enabling individuals to reduce coverage costs while assuming risks for care that is not covered. Insurers, however, have far fewer disclosure requirements than Medicare, and studies show that customers in the private sector can find it difficult to know what their policy covers,[88] and at what cost.[89] Moreover, since Medicare collects data about utilization and costs for its enrollees—data that private insurers treat as trade secrets—it gives researchers key information about health care system performance.
Medicare also has an important role in driving changes in the entire health care system. Because Medicare pays for a huge share of health care in every region of the country, it has a great deal of power to set delivery and payment policies. For example, Medicare promoted the adaptation of prospective payments based on DRG's, which prevents unscrupulous providers from setting their own exorbitant prices.[90] Meanwhile, the Patient Protection and Affordable Care Act has given Medicare the mandate to promote cost-containment throughout the health care system, for example, by promoting the creation of accountable care organizations or by replacing fee-for-service payments with bundled payments.[91]
The following congressional committees provide oversight for Medicare programs:[176]