Medicare Glossary

Benefit Period

The way Medicare measures your use of hospital and skilled nursing facility (SNF) services under Part A. A benefit period begins the day you are admitted as an inpatient and ends when you have been out of the hospital or SNF for 60 consecutive days. There is no limit to the number of benefit periods you can have.

Medicare Part A

Hospital insurance. Covers inpatient hospital stays, skilled nursing facility care, hospice care, and some home health care. Most people don't pay a monthly premium for Part A if they or their spouse worked and paid Medicare taxes for at least 10 years.

Also known as: Hospital Insurance

Observation Status

A classification used when a hospital monitors your condition before deciding whether to formally admit you. Even if you stay overnight, observation status is considered outpatient care (Part B), not inpatient (Part A). This distinction matters for skilled nursing facility eligibility.

Also known as: Outpatient observation

Skilled Nursing Facility (SNF)

A facility that provides short-term skilled care and therapy after a qualifying 3-day inpatient hospital stay. Medicare Part A covers SNF care for up to 100 days per benefit period, with no copay for days 1–20 and a daily coinsurance for days 21–100.

Also known as: SNF, Nursing home (short-term)