Inpatient, observation, skilled nursing and benefit periods, explained in plain English. Independent educational site. Not affiliated with or endorsed by the U.S. government, the federal Medicare program, or any insurance company. Figures are 2026 amounts published by CMS unless noted; check Medicare.gov for your situation.
- Observation vs inpatient: the hospital status that changes your Medicare bill
Why being 'under observation' is billed under Part B, how it affects skilled nursing coverage, the MOON notice, and what to ask the hospital.
- Skilled nursing under Medicare: the 3-day rule, 100 days, and what it really costs
How Medicare covers skilled nursing facility care, the qualifying stay rule, the $217-a-day coinsurance from day 21, and why most stays end before day 100.
- Medicare benefit periods: why you can pay the hospital deductible more than once a year
How Part A benefit periods start and end, why multiple hospital stays can mean multiple deductibles, and how reserve days work.