Medicare Part A covers up to 100 days per benefit period in a skilled nursing facility, with $0 out of pocket for the first 20 days and a daily coinsurance of $209.50 (2025) or $217.00 (2026) for days 21 through 100. After day 100, Medicare pays nothing. Understanding the full cost picture requires knowing the eligibility rules, what counts as covered care, and where gaps can catch you off guard.
The Day-by-Day Cost Breakdown
Medicare structures skilled nursing facility (SNF) payments in three tiers within each benefit period:
- Days 1 through 20: Medicare covers the full cost. You pay $0 in coinsurance.
- Days 21 through 100: You pay a daily coinsurance of $209.50 in 2025, rising to $217.00 in 2026. Medicare covers the rest.
- Days 101 and beyond: Medicare coverage ends entirely. You’re responsible for the full daily rate, which can run $300 to $400 or more depending on the facility and region.
That coinsurance for days 21 through 100 adds up fast. If you use all 80 of those days in 2025, your share comes to $16,760. Many people with a Medigap (Medicare Supplement) policy have this coinsurance partially or fully covered, depending on the plan they chose.
How Medicare Calculates the Facility Payment
The amount Medicare actually pays the nursing facility on your behalf isn’t a single flat rate. It’s calculated through the Patient Driven Payment Model, which CMS introduced in 2019. The system classifies each patient based on their primary diagnosis, the therapies they need, their cognitive and functional abilities, and certain complicating conditions. A patient recovering from a hip replacement with no complications generates a different daily payment than someone with a complex wound infection who also has cognitive impairment.
Geography matters too. Medicare adjusts the base payment rate using a wage index tied to local hospital labor costs. A facility in San Francisco receives a higher per-day payment than one in rural Arkansas for the same patient profile, reflecting the higher cost of staffing in that area. This adjustment happens behind the scenes and doesn’t change what you owe in coinsurance.
The 3-Day Hospital Rule
Medicare will only cover a SNF stay if you’ve first spent at least 3 consecutive days as a hospital inpatient. The day you’re admitted counts, but the day you’re discharged does not. So if you’re admitted on a Monday, Tuesday is day two, Wednesday is day three, and you’re eligible for SNF coverage when you leave on Thursday or later.
Here’s where it gets tricky: time spent under “observation status” does not count toward those 3 days, even if you’re in a hospital bed overnight. The same goes for time in the emergency room before an official inpatient admission. This distinction catches many families by surprise. You can spend two nights in a hospital, receive round-the-clock care, and still not qualify for SNF coverage because the hospital classified you as an outpatient under observation the entire time.
If you or a family member is hospitalized and a SNF stay seems likely afterward, ask directly whether the admission is inpatient or observation. If the hospital changes your status from inpatient to observation, you have the right to appeal that decision.
What “Skilled Care” Actually Means
Medicare only pays for care that requires the expertise of licensed professionals, such as registered nurses or physical therapists. This includes things like wound care with sterile dressing changes, intravenous medications, physical or occupational therapy after surgery, and monitoring of unstable medical conditions. The care must also be medically necessary and related to the condition that led to your hospital stay.
What Medicare does not cover is custodial care: help with bathing, dressing, eating, getting in and out of bed, or using the bathroom. Most nursing home care is custodial in nature. If the only assistance you need falls into this category, Medicare will not pay for a SNF stay regardless of how many days you spent in the hospital beforehand. This is one of the most common reasons people are surprised by a coverage denial.
What the Daily Rate Covers
During a covered SNF stay, the Medicare payment to the facility is meant to be all-inclusive for skilled services. That includes a semi-private room, meals, nursing care, physical therapy, occupational therapy, speech-language pathology, medications administered during the stay, medical social services, and medical supplies like syringes and catheters. You should not receive separate bills for these items during a Medicare-covered stay.
Items that fall outside the covered bundle include a private room (unless medically necessary), personal convenience items like a telephone or television in some facilities, and non-skilled personal care items. Dental care, hearing aids, and routine eye exams are also excluded from Medicare coverage generally, whether you’re in a SNF or not.
How Benefit Periods Work
The 100-day limit resets with each new benefit period. A benefit period begins the day you’re admitted as a hospital inpatient and ends when you’ve gone 60 consecutive days without receiving inpatient hospital or skilled nursing care. Once that 60-day gap passes, the next qualifying hospital admission starts a fresh benefit period with a new 100-day SNF allowance.
There’s no annual limit on the number of benefit periods you can have. In theory, someone could use multiple 100-day SNF stays in a single year if they have separate qualifying hospital admissions with 60-day gaps between them. In practice, most SNF stays are far shorter than 100 days, with the average falling closer to 25 to 30 days.
Medicare Advantage Plans May Differ
If you have a Medicare Advantage plan (Part C) instead of Original Medicare, your SNF coverage must be at least as generous as Original Medicare by law. However, the experience can look quite different. Medicare Advantage plans often require prior authorization before approving a SNF admission, meaning the plan must agree the stay is medically necessary before coverage kicks in. They may also limit you to facilities within their provider network, and using an out-of-network SNF could mean significantly higher costs or no coverage at all.
Some Medicare Advantage plans waive the 3-day prior hospital stay requirement, which can be a significant advantage for people who need SNF care after a shorter hospitalization or an observation stay. Check your plan’s specific rules, because this varies widely.
After Day 100: Who Pays?
Once Medicare coverage runs out, you have several options, none of them cheap. Private pay at a skilled nursing facility typically costs $8,000 to $12,000 per month or more depending on your location and care needs. Long-term care insurance, if you purchased a policy before needing care, may cover some or all of this cost.
Medicaid is the other major payer for nursing home care, but eligibility is based on income and assets. Each state sets its own thresholds, and many people need to “spend down” their savings before qualifying. Planning for this transition is worth discussing with a financial advisor or elder law attorney well before the 100-day mark approaches, because asset protection strategies often need to be in place years in advance to be effective.