Medicare Part A, often referred to as "Hospital Insurance," is a component of the federal Medicare program primarily designed to cover inpatient hospital care. Part A provides coverage for stays in hospitals, skilled nursing facilities, hospice care, and some home healthcare services. Most people are automatically eligible for Medicare Part A at age 65 or older if they have paid Medicare taxes for at least 10 years, with no monthly premium required. For those who need it, Part A can also be accessed by individuals under 65 with certain disabilities or specific health conditions.