Medicare will pay for up to 100 days of skilled nursing facility (SNF) care per benefit period, which is where most rehabilitation happens after a hospital stay. However, this isn’t a blanket guarantee—Medicare will only cover rehabilitation services that are deemed medically necessary, and you must meet specific eligibility requirements first. For example, if you’re admitted to the hospital following a stroke, spend three days as an inpatient, and then transfer to a nursing facility for physical therapy and occupational therapy, Medicare Part A will cover your care there, but only if a doctor determines you need daily skilled nursing care or rehabilitative services that cannot be provided at home. The real limitation isn’t just the 100-day maximum—it’s that Medicare’s definition of “skilled” care is narrow, and coverage can end abruptly if the insurance company determines you’ve reached your rehabilitation potential or no longer need daily skilled services.
Many people assume Medicare covers 100 days of therapy, but Medicare actually covers 100 days of facility-based care when that care includes skilled services. A patient receiving only physical therapy without the need for nursing oversight or other skilled interventions might find coverage denied partway through their stay. The type of facility also matters. Medicare covers inpatient rehabilitation facility (IRF) stays differently than skilled nursing facilities, and the coverage rules differ further if you’re receiving care in your own home through a home health agency.
Table of Contents
- What Does Medicare Actually Cover in Rehabilitation Care?
- The 100-Day Limit and How It Actually Works
- Medicare Advantage Plans and How They Differ
- The Medical Necessity Requirement and Rehabilitation Potential
- Documentation, Prior Authorization, and Coverage Denials
- What Happens When Medicare Coverage Ends
- Rehabilitation in the Home as an Alternative
- Conclusion
- Frequently Asked Questions
What Does Medicare Actually Cover in Rehabilitation Care?
Medicare Part A covers inpatient rehabilitation services in two main settings: inpatient rehabilitation facilities (IRFs) and skilled nursing facilities (SNFs). In an IRF, you’re admitted as a hospital-level patient, and Medicare typically covers the entire facility charge as long as your condition is medically complex enough to require intensive, coordinated care from an interdisciplinary team. For instance, someone recovering from a severe hip fracture with multiple comorbidities would typically qualify for IRF-level care, where they might receive three or more hours of therapy per day combined with daily physician oversight. Skilled nursing facilities are different. They’re the next step down in intensity, often called “step-down” care. Medicare covers SNF care when you need daily skilled nursing care—such as wound dressing changes, medication management, or complex catheter care—or when you need rehabilitative services that are ordered by a physician and provided by licensed therapists.
A person with a straightforward hip replacement might go directly to an SNF for physical therapy without needing the higher intensity of an IRF. The distinction matters because your insurance approval, length of stay, and copay amounts all depend on which type of facility you’re in. Home health rehabilitation is a third option. If you’re homebound and need skilled care, Medicare Part A will cover skilled nursing visits, physical therapy, occupational therapy, and speech therapy through a home health agency. Unlike facility-based care, there’s no 100-day limit on home health coverage—it continues as long as you’re homebound and need skilled services. However, getting approved for home health is its own process, and not every person who could benefit from rehabilitation at home will meet Medicare’s strict definition of “homebound.”.
The 100-Day Limit and How It Actually Works
The 100-day benefit applies to skilled nursing facility care within a single benefit period. Medicare’s benefit periods reset after you’ve been out of the hospital or SNF for 60 consecutive days—which is a critical detail many people miss. If you’re discharged from a nursing facility, spend 60 days at home, and then need rehabilitation again, you get a fresh 100-day benefit. However, if you’re still in the facility or readmitted within 60 days, you’re drawing from the same benefit period bucket. Here’s where it gets complicated: Medicare only counts days where you’re receiving skilled care toward the 100-day limit. If you’re in a facility but the care becomes purely custodial—meaning no skilled nursing or therapy is being provided—those days don’t count against your benefit, but Medicare also won’t pay for them.
You’d be responsible for the costs. Some facilities will keep a patient on the books longer than medically necessary, which is why families should understand that reaching “100 days” isn’t really the insurance company’s problem—the real issue is whether insurance will continue paying each day based on medical necessity. There’s also the copay structure to understand. For days 1-20 of SNF care, Medicare Part A covers 100% of the cost (minus your Part A deductible). For days 21-100, you pay a daily copay, which in 2024 was $200 per day. Many families are shocked to receive bills for $4,000-$6,000 out of pocket during the latter part of an SNF stay, even though they thought Medicare was covering them. These copays can quickly deplete savings, which is why some people with Medigap policies or sufficient resources choose to stay in a facility for the full 100 days, while others are forced to discharge themselves earlier due to cost.
Medicare Advantage Plans and How They Differ
If you’re enrolled in a Medicare Advantage plan (Part C) instead of traditional Medicare, your rehabilitation coverage might be different. While Medicare Advantage plans must cover at least what traditional Medicare does, many plans add additional benefits—some cover days 101-150 of SNF care, for example, or waive the copays after day 20. This is one area where having the “right” insurance plan can make a substantial financial difference. However, Medicare Advantage plans also have network requirements.
You generally must use facilities in the plan’s network to receive coverage, and prior authorization is often required before admission. If you’re admitted to an out-of-network facility, even if it’s the closest suitable facility to your home, coverage might be denied or significantly limited. A patient with a Medicare Advantage plan who needs urgent rehabilitation after a hospitalization should verify that their preferred facility is in-network before assuming coverage will apply. Some Medicare Advantage plans also impose stricter medical necessity reviews than traditional Medicare does. They might deny continuation of SNF benefits earlier, arguing that you’ve reached your rehabilitation potential or that further care is not “skilled.” If this happens, you have the right to appeal, but the appeal process takes time and many people don’t know how to navigate it.
The Medical Necessity Requirement and Rehabilitation Potential
One of the biggest constraints on Medicare rehabilitation coverage isn’t the day limit—it’s the medical necessity requirement. Medicare will only cover rehabilitation services if a physician orders them and they’re aimed at restoring function or preventing further decline. If Medicare’s review determines you’ve “plateaued” or are unlikely to improve, they may deny coverage even if you have days remaining. This is where the concept of “rehabilitation potential” becomes a practical hurdle. Medicare doesn’t explicitly publish how they define it, which creates uncertainty. A patient working three hours a day with therapists, showing measurable improvement in mobility or cognitive function, will almost always continue to receive coverage.
But if progress slows—say, you were improving weekly but have now gone three weeks without measurable gains—the insurance company may initiate a coverage review. They’ll request documentation from the facility showing your current progress, your physician’s opinion on your likely future improvement, and whether you’re medically stable enough to continue intensive rehabilitation. For example, someone recovering from a severe stroke might show rapid gains in the first month of therapy, but then progress slows. If the patient is still motivated and working with therapists, Medicare generally continues coverage. But if the patient is no longer engaged in therapy or the treatment team believes further improvement is unlikely, Medicare might stop payment. The nursing facility then faces a choice: discharge the patient or transition them to custodial care (which the family pays for out of pocket).
Documentation, Prior Authorization, and Coverage Denials
Getting rehabilitation coverage approved isn’t automatic. Most hospitals and nursing facilities will request prior authorization from Medicare before or shortly after admission. The authorization process involves the facility submitting detailed clinical documentation—your diagnosis, comorbidities, functional status, and the specific skilled services you’ll need—to an insurance reviewer who approves or denies the request. If the insurance company denies your claim, either upfront or in the middle of your stay, you have the right to appeal. However, many people aren’t informed of this right, and appeals require effort and often legal assistance.
If you receive a “notice of non-coverage” from your facility, you should take it seriously. This notice should explain why Medicare is ending coverage and should inform you of your appeal rights. Some families wait until coverage stops and bills pile up before taking action, but you can appeal immediately. A critical warning: if you’re in a facility and worried about coverage ending, ask your case manager or social worker to show you the current authorization status. If you’re nearing the end of days approved, start planning for discharge or cost-sharing. Don’t assume 100 days means you have 100 days—Medicare can and will stop payment earlier if they determine continued care is not medically necessary.
What Happens When Medicare Coverage Ends
When Medicare stops paying for your SNF care, the facility must provide written notice at least two days before the coverage ends (though this rule is sometimes violated, and you can file complaints if it is). At that point, you have several options: discharge to home, transfer to a lower level of care that you’ll pay for privately, or appeal the coverage denial. For many families, the financial reality sets in quickly.
Private pay rates for nursing facility care range from $250 to $500+ per day depending on the region and facility quality. If you need care but Medicare has ended payment, you might need to spend down personal assets, apply for Medicaid (which covers long-term care for those with limited income and assets), or negotiate a reduced rate with the facility. Some facilities are more willing to negotiate than others, and some offer programs for indigent patients, but this shouldn’t be assumed.
Rehabilitation in the Home as an Alternative
Home health rehabilitation is often overlooked, but it’s an important alternative to facility-based care when it’s appropriate. There’s no 100-day limit on Medicare-covered home health services—coverage continues as long as you’re homebound and need skilled care. If you can safely rehabilitate at home with daily or a few times weekly therapy visits, and if you’re homebound (meaning you can’t leave home without considerable effort or medical assistance), Medicare will pay for as long as rehabilitation is medically necessary. The catch is the homebound requirement, which Medicare interprets strictly.
Being homebound doesn’t mean you never leave your house; it means you can’t leave without a considerable effort, like arranging medical transport or assistance. If you’re able to get in a car with help, you likely won’t qualify. The assessment of homebound status happens during the initial home health evaluation, and decisions can be appealed if you disagree. Home health rehabilitation also requires that someone be available at home to let therapists in and provide support—it’s not an option if you live alone with no support system.
Conclusion
Medicare will pay for rehabilitation care, but the amount of coverage depends on the type of facility, your medical condition, and whether your care continues to meet the definition of medically necessary skilled care. The headline figure—100 days in a skilled nursing facility—is real, but it’s not a guarantee. Many people receive fewer days of coverage because insurance reviewers determine rehabilitation potential has been reached or because they’re transitioned to custodial care they must pay for privately.
Your best protection is understanding these rules before you need rehabilitation. Know what type of facility you’re likely to need, understand the copay structure, ask for authorization status regularly if you’re in a facility, and don’t hesitate to appeal denials. Consider whether home health might work for your situation, explore whether Medigap or Medicare Advantage coverage might help, and start planning financially for potential out-of-pocket costs. If you’re facing a coverage denial or are unsure about what Medicare will cover in your specific case, ask to speak with your facility’s case manager or contact Medicare directly at 1-800-MEDICARE for clarification.
Frequently Asked Questions
Does Medicare cover rehabilitation in my home?
Yes, if you’re homebound and need skilled nursing or therapy services, Medicare Part A covers home health rehabilitation with no day limit. The coverage continues as long as you meet medical necessity and homebound requirements.
What’s the difference between inpatient rehabilitation facilities and skilled nursing facilities?
IRFs are hospital-level intensive care settings, typically for patients needing 3+ hours of therapy daily and close physician oversight. SNFs are the next step down, often for patients needing skilled nursing or lighter therapy. Medicare covers both, but intensity levels and qualification requirements differ.
If I use all 100 days of SNF coverage, can I get more?
Not within the same benefit period. However, if you’re discharged and remain out of the hospital or SNF for 60 consecutive days, you reset to a new benefit period with a fresh 100 days.
What happens if Medicare stops paying while I’m still in a facility?
The facility must give you written notice at least two days before coverage ends. You then have the right to appeal the decision, discharge, or arrange private payment.
Can Medicare Advantage plans cover more rehabilitation days than traditional Medicare?
Yes, many Medicare Advantage plans offer extended SNF coverage beyond 100 days or waive copays. Check your plan details to see what’s included.
How can I appeal a rehabilitation coverage denial?
If you receive a notice of non-coverage, you can file an appeal through the facility, request a peer-to-peer review with your physician, or appeal to Medicare directly. The appeal process is explained in the non-coverage notice.