Summary: Medicare pays $0 for custodial nursing home care, the help with daily living that is most of long-term care. It covers skilled nursing only after a 3-day hospital stay: fully for days 1 to 20, with a daily copayment for days 21 to 100, and nothing after day 100. This guide explains the rules, the exceptions people misunderstand, and what actually pays for long-term nursing home stays.
The single most expensive misconception in retirement planning is that Medicare covers nursing homes. It does not, except in a narrow rehabilitative window that most long-term residents never qualify for. The confusion is understandable: Medicare does pay nursing facilities, just not for the reason most residents are there.
This guide draws the exact boundary, because the boundary decides who pays the $129,575-a-year bill.
Hospitals can keep you for days under outpatient observation status while you occupy a regular bed, receive regular care, and believe you are admitted. Observation days do not count toward Medicare's 3-day inpatient requirement for skilled nursing coverage, no matter how many there are. A four-night hospital stay that was three observation days and one inpatient day buys you zero days of nursing home coverage.
Hospitals must give you the MOON notice (Medicare Outpatient Observation Notice) when you are under observation for more than 24 hours. Read it, ask the attending physician whether inpatient admission is appropriate, and know you can appeal the status. This single piece of paper decides whether a $15,000 rehab stay is covered.
Medicare covers skilled care: nursing and therapy that require licensed professionals, ordered by a doctor, for rehabilitation after an illness or injury. It does not cover custodial care: help with bathing, dressing, eating, toileting, and supervision for cognitive impairment. Custodial care is what most nursing home residents need most of the time, which is why most nursing home days are not Medicare days.
The distinction is medical, not semantic. A resident receiving physical therapy after a hip replacement is getting skilled care; the same resident a month later, stable but unable to live independently, is receiving custodial care. Medicare pays for the first and not the second, and the facility knows exactly which day the coverage ends.
When Medicare does cover a skilled nursing facility stay, the structure is: days 1 to 20 have no copayment, days 21 to 100 carry a daily copayment (set annually; $204 a day in 2025), and coverage ends entirely after day 100. The stay must follow a qualifying inpatient hospital stay of at least 3 days, and admission to the facility must generally occur within 30 days of discharge.
Observation status is the trap: hospital days billed as outpatient observation do not count toward the 3-day inpatient requirement, even if you spent three nights in a hospital bed. Always ask whether you are admitted as an inpatient; the billing status decides the nursing home coverage.
Medicare Advantage plans cover the same skilled-nursing benefit as Original Medicare but may waive the 3-day hospital stay requirement and use prior authorization instead. Some plans also cover a few extra days or lower copayments. What no Medicare Advantage plan does is cover custodial long-term care; the statutory exclusion applies equally.
If you are choosing between Original Medicare plus Medigap and Medicare Advantage, the nursing home question should not decide it: neither path covers custodial care. Medigap covers the skilled-nursing copayments; it does not extend the 100 days.
For stays beyond Medicare's window, the payers are: private funds first, then long-term care insurance if you hold it, then Medicaid after spend-down. Medicaid is means-tested, generally $2,000 in countable assets for an individual, with a 5-year lookback on asset transfers. Planning for Medicaid eligibility is elder-law territory with strict rules and state variations.
Veterans have a separate path: the VA covers nursing home care for veterans with service-connected disability ratings and offers limited coverage for others based on priority and availability. It is not a general long-term care benefit, but for eligible veterans it is substantial.
Because Medicare's coverage is rehabilitative and short, every family needs a separate plan for custodial care: insurance, earmarked assets, or an explicit Medicaid strategy. The most dangerous plan is assuming Medicare will handle it, because that assumption is usually discovered at the facility's billing office, after the assets are already exposed.
Have the conversation before the hospital stay, not during it. Know your Medigap or Advantage plan's skilled-nursing terms, know the observation-status question to ask, and know what your family will do on day 101.
'Medicare covers 100 days of nursing home care.' Only skilled care following a qualifying hospital stay, with copayments from day 21. 'My Medigap extends it.' No, it covers cost-sharing within the 100 days. 'The facility said Medicare will cover it.' Facilities sometimes say this about the initial skilled period; confirm in writing which days are covered and what happens when coverage ends.
When in doubt, ask the facility's billing office for the Notice of Medicare Non-Coverage and appeal rights. You have the right to a formal determination, and the few days of extended coverage during an appeal are worth having.
No. Medicare pays $0 for custodial long-term care. It covers skilled nursing facility care only after a 3-day inpatient hospital stay: fully days 1-20, with a daily copayment days 21-100, nothing after day 100.
To qualify for Medicare skilled-nursing coverage you generally need 3 consecutive inpatient hospital days first. Days billed as outpatient observation do not count.
Medigap covers the copayments for Medicare-covered skilled nursing days. It does not cover custodial care and does not extend coverage past 100 days.
Private funds, long-term care insurance, VA benefits for eligible veterans, or Medicaid after spending down to the asset limits.
Rules per Medicare.gov; copayment figure 2025. Verify current figures at medicare.gov. This guide is for planning only.