How long you can stay in a skilled nursing facility depends almost entirely on who’s paying for it. Medicare covers up to 100 days per benefit period, but most people don’t use all 100 because coverage ends once you stop needing daily skilled care. Medicaid can cover an indefinite stay if you qualify financially. And if you’re paying out of pocket, there’s no time limit at all.
Medicare’s 100-Day Limit
Medicare Part A covers skilled nursing facility (SNF) care in two tiers. Days 1 through 20 are fully covered with no out-of-pocket cost beyond the standard Part A deductible. Starting on day 21, you pay a daily coinsurance of $209.50 (in 2025) for each day through day 100. After day 100, Medicare pays nothing.
That 100-day window is a maximum, not a guarantee. Medicare will only keep paying as long as you need skilled care on a daily basis, such as physical therapy after a hip replacement, wound care, IV medications, or other treatments that require trained medical staff. Once the facility or Medicare determines you’ve improved enough that you no longer need that level of care, coverage stops, even if you’re on day 30.
The 3-Day Hospital Rule
Before Medicare covers any SNF stay, you must have a qualifying inpatient hospital stay of at least 3 consecutive days. The count starts the day you’re formally admitted as an inpatient and does not include the day you’re discharged. This is where many people get tripped up: time spent in the emergency room or under “observation status” does not count toward those 3 days, even if you stayed overnight in a hospital bed. Only days where you are officially classified as an inpatient qualify.
If you’re unsure whether you’ve been admitted as an inpatient or placed under observation, ask. The distinction is invisible to patients (you’re in the same bed, seeing the same nurses) but it can mean the difference between a fully covered SNF stay and a bill of tens of thousands of dollars.
How the 100-Day Clock Resets
Medicare measures your SNF use in “benefit periods.” A benefit period starts the day you’re admitted to a hospital or SNF as an inpatient. It ends when you have gone 60 consecutive days without receiving any inpatient hospital care or skilled nursing care. Once that 60-day gap passes, a new benefit period begins, and the 100-day SNF clock resets to zero.
This means it’s possible to receive more than 100 days of Medicare-covered SNF care over time, just not within a single benefit period. If you leave a facility, spend 60 days at home, are hospitalized again with a new qualifying 3-day stay, and need skilled nursing care afterward, you get a fresh 100 days.
What Happens After Medicare Stops Paying
If you still need care after day 100, or if Medicare ends coverage earlier because you no longer meet the skilled care requirement, you have a few options. The most common paths are Medicaid, private long-term care insurance, or paying out of pocket.
Paying privately is expensive. The national average cost for a semi-private room in a skilled nursing facility is roughly $308 per day, which works out to about $9,400 per month or $112,000 per year. Private rooms cost more. These rates vary significantly by state and facility.
Medicaid is the primary payer for long-term nursing home stays in the United States. Unlike Medicare, Medicaid does not impose a day limit on how long you can remain in a facility. If you qualify, coverage continues as long as you need nursing-level care. The catch is eligibility: Medicaid is a means-tested program, so you generally must have very limited income and assets to qualify. The specific thresholds vary by state, and many families work with an elder law attorney to navigate the application process, particularly if a spouse is still living at home.
Short-Term Rehab vs. Long-Term Residency
Skilled nursing facilities serve two very different populations. The first group is short-term rehab patients recovering from surgery, a stroke, a fracture, or a serious illness. These stays typically last a few weeks, and Medicare covers most or all of the cost. The second group is long-term residents who need 24-hour supervision, help with daily activities, and ongoing medical care that can’t be provided at home or in an assisted living facility.
Medicare generally does not cover long-term residential stays. It pays for skilled care, meaning services that require the expertise of licensed nurses or therapists. Once your needs shift from active rehabilitation to maintenance and personal assistance (help bathing, dressing, eating), that’s considered custodial care, and Medicare stops covering it. The transition from “skilled” to “custodial” is where many families are caught off guard by unexpected costs.
Your Rights If Coverage Ends Early
If the facility tells you that Medicare coverage is ending and you believe you still need skilled care, you have the right to appeal. The facility must give you a written “Notice of Medicare Non-Coverage” at least 2 days before your covered services are set to end. If you don’t receive this notice, ask for it.
You can file what’s called a fast appeal through your regional Beneficiary and Family Centered Care Quality Improvement Organization (BFCC-QIO). To meet the deadline, you must submit the request no later than noon the day before the coverage termination date listed on your notice. The review moves quickly: the QIO will typically issue a decision by the close of business the day after it receives the information it needs. While the appeal is being reviewed, you won’t be charged for continued services.
If the decision goes against you, you won’t owe anything for services provided before the coverage end date on your original notice. But if you choose to stay in the facility after that date, you become responsible for the cost.
Planning Ahead for a Longer Stay
Most people entering a skilled nursing facility after a hospitalization expect to go home within a few weeks. Many do. But for those whose recovery stalls, or whose condition makes it unsafe to return home, the financial transition from Medicare-covered rehab to long-term care can happen fast. Understanding the 100-day ceiling, the coinsurance that kicks in at day 21, and the Medicaid application timeline gives you a much better starting point for making decisions before you’re in a crisis. If a longer stay looks likely, starting the Medicaid eligibility conversation early, ideally while Medicare is still covering the first weeks, can save months of private-pay costs down the road.