Medicare

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Medicare

Medicare is a national social insurance program, administered by the U.S. federal government since 1966, that guarantees access to health insurance for Americans aged 65 and older who have worked and paid into the system, and younger people with disabilities as well as people with end stage renal disease and persons with amyotrophic lateral sclerosis.

As a social insurance program, Medicare spreads the financial risk associated with illness across society to protect everyone, and thus has a somewhat different social role from for-profit private insurers, which manage their risk portfolio by adjusting their pricing according to perceived risk.

Medicare serves a large population of elderly and disabled individuals. On average, Medicare covers about half (48 percent) of health care costs for enrollees. Medicare enrollees must cover the rest of the cost. These out-of-pocket costs vary depending on the amount of health care a Medicare enrollee needs. They might include uncovered services—such as long-term, dental, hearing, and vision care—and supplemental insurance.