Medicare pays for nursing home care only in limited circumstances, and only for a short time. It covers up to 100 days of skilled nursing facility care per benefit period, but it does not pay for long-term custodial care, which is what most people think of when they picture “living in a nursing home.” This distinction catches many families off guard, so understanding exactly what Medicare will and won’t cover is essential for planning.
What Medicare Actually Covers
Medicare Part A covers stays in a skilled nursing facility (SNF) when you need daily skilled care that can only be performed by or under the supervision of licensed professionals. That includes things like intravenous medications, wound care, physical therapy after a hip replacement, or monitoring of a complex medical condition. The care has to be related to a condition treated during a qualifying hospital stay, or a new condition that develops while you’re already receiving skilled nursing care.
A covered SNF stay typically includes a semi-private room, meals, nursing services, physical and occupational therapy, medications administered during your stay, and medical supplies. Medicare pays 100% of these costs for the first 20 days. From day 21 through day 100, you pay a daily coinsurance of $217. After day 100, Medicare stops paying entirely and you’re responsible for the full cost.
The 3-Day Hospital Stay Requirement
To qualify for SNF coverage under Original Medicare, you generally need a prior inpatient hospital stay of at least 3 consecutive days. The clock starts on the day you’re formally admitted as an inpatient, not when you physically arrive at the hospital. This is where a common and costly problem arises: time spent under “observation status” in the emergency room or hospital does not count toward those 3 days, even if you’re there overnight or for multiple nights.
Observation is classified as outpatient care. So a person who spends two nights in the hospital, with one night under observation and formal inpatient admission on the second day, has only one inpatient day on record. That’s not enough to qualify. Hospitals are required to give you a written notice if you’ve been under observation for more than 24 hours, but many patients don’t realize the financial implications until they’re denied SNF coverage. Always ask whether you’ve been admitted as an inpatient or placed under observation.
If your doctor participates in an Accountable Care Organization or another Medicare initiative approved for a “Skilled Nursing Facility 3-Day Rule Waiver,” the 3-day stay requirement may not apply. Medicare Advantage plans also frequently waive this rule, though they typically require prior authorization before a SNF stay begins.
What Medicare Won’t Pay For
Most nursing home care in the United States is custodial care, meaning help with everyday activities like bathing, dressing, eating, using the bathroom, and getting in and out of bed. Medicare explicitly excludes custodial care if that’s the only type of care you need. It doesn’t matter how old you are, how frail you are, or how long you’ve paid into the system. If your needs are personal rather than medical, Medicare won’t cover a nursing home stay.
This is the biggest gap in coverage for older adults. The average nursing home costs over $8,000 per month for a semi-private room, and many people need that level of care for years. Medicare was designed to cover short-term rehabilitation and recovery, not long-term residence.
How Benefit Periods Work
Medicare’s 100-day SNF limit resets when a new “benefit period” begins. A benefit period starts the day you’re admitted as a hospital inpatient and ends once you’ve gone 60 consecutive days without receiving inpatient hospital or skilled nursing care. After that 60-day break, a new benefit period begins if you’re hospitalized again, and the 100-day SNF clock resets to zero.
In practice, this means someone who recovers, goes home for two months, and then has another qualifying hospital stay can get another round of up to 100 SNF days. But you can’t simply stay in a nursing home continuously and expect Medicare to keep paying. The system is built around episodes of acute illness followed by recovery.
Reducing Your Out-of-Pocket Costs
The $217 daily coinsurance for days 21 through 100 adds up fast, potentially reaching over $17,000 for a single benefit period. Medigap (Medicare Supplement) insurance can help, but not all plans cover this cost. Plans C, D, F, G, M, and N cover 100% of the skilled nursing coinsurance. Plans K and L cover 50% and 75% respectively. Plans A, B, and the high-deductible plans don’t cover it at all. If you’re shopping for a Medigap policy and think a SNF stay is in your future, check whether the plan includes this benefit.
Medicare Advantage plans cover the same skilled nursing services as Original Medicare, but the cost-sharing structure varies by plan. Some charge a flat daily copay, others use coinsurance. Read your plan’s Evidence of Coverage document for the specific amounts.
Medicaid for Long-Term Nursing Home Care
For people who need long-term custodial nursing home care, Medicaid is the primary payer, not Medicare. Medicaid is a joint federal-state program for people with limited income and assets, and it covers nursing home stays that Medicare won’t. Eligibility rules vary by state, but they’re strict. In most states, your countable assets must be around $2,000 or less to qualify (the exact threshold depends on where you live).
If you have a spouse living at home, a portion of your combined assets is protected for them through what’s called a Protected Spousal Amount, which is generally half of your total countable assets up to a cap that adjusts annually. Once you qualify, Medicaid pays the nursing home directly, but most of your monthly income (Social Security, pensions) goes toward the cost of your care. You keep a small personal needs allowance, typically around $60 per month, along with deductions for health insurance premiums and an allowance for your spouse.
Many families engage in Medicaid planning years in advance because spending down assets to meet the eligibility threshold can be financially devastating without preparation. There’s also a “look-back period” of five years in most states, meaning assets you gave away or transferred during that window can result in a penalty period of ineligibility.
Planning Ahead
The gap between what Medicare covers and what long-term nursing home care costs is one of the largest uninsured risks in retirement. Long-term care insurance, purchased before you need it, can cover custodial nursing home stays that Medicare and Medigap won’t touch. Some life insurance policies and annuities also include long-term care riders. The younger and healthier you are when you buy coverage, the lower the premiums, and once you have a chronic condition or cognitive decline, you likely won’t qualify at all.
For families already facing a nursing home decision, the key question is whether the care needed is skilled or custodial. If it’s skilled and follows a qualifying hospital stay, Medicare will likely cover the first weeks. If the need is custodial and long-term, the realistic options are paying out of pocket, qualifying for Medicaid, or drawing on long-term care insurance if you have it.