Medicare covers rehabilitation stays for a limited time, not indefinitely

Medicare Part A covers inpatient rehabilitation in a skilled nursing facility (SNF) for up to 100 days per benefit period, but most people stay much shorter. The length of your actual stay depends on your medical condition, how quickly you recover, and whether your doctor believes rehabilitation is medically necessary. Medicare will stop paying once you no longer need daily skilled nursing care — not when you reach 100 days, but when your progress plateaus or you can manage at home.

A benefit period begins the day you enter the hospital and ends 60 days after you leave. If you are readmitted to the hospital after that 60-day window closes, a new benefit period starts, and you get another 100 days of SNF coverage. This matters because some people need rehabilitation twice in one year and can use both benefit periods.

Key Takeaways

  • Medicare Part A covers up to 100 days in a skilled nursing facility per benefit period, but your actual stay ends when your doctor determines you no longer need daily skilled care.
  • You must be admitted to a hospital for at least three consecutive days before Medicare will cover a SNF stay that follows.
  • Medicare requires you to pay a copay starting on day 21 (currently $194.50 per day in 2024, though this amount changes yearly), and you pay the full cost from day 101 onward.
  • Your rehabilitation facility must be Medicare-certified, and your doctor must order the care as medically necessary for your recovery.
  • If you have a Medigap or Medicare Advantage plan, your out-of-pocket costs may be lower than Original Medicare alone.

The three-day hospital stay requirement

Before Medicare will pay for a SNF stay, you must first spend at least three consecutive days in a hospital as an inpatient. This is a hard rule — observation stays do not count, even if you spent two nights in the hospital. The three days must be in a hospital bed under inpatient status, not in the emergency department or as an outpatient.

This requirement trips up many people. You may feel ready to leave the hospital after two days, but if your doctor believes you need rehabilitation, they will keep you for a third day to trigger Medicare coverage. If you leave after two days, you will not may have access to for Medicare-covered SNF care afterward, and you will have to pay out of pocket or use another insurance source.

How Medicare decides when your stay ends

Your rehabilitation stay does not automatically end at 100 days. Instead, Medicare and your facility monitor your progress. If your medical team determines that you no longer need daily skilled nursing care — meaning you can safely manage your medications, wound care, physical therapy, or other treatments at home or in a less intensive setting — your Medicare coverage ends.

This decision is made by your doctor and the facility's care team, not by Medicare itself. They look at whether you are making measurable progress toward your discharge goals. If you plateau or decline, and skilled care is no longer medically necessary, the facility must discharge you. You will receive written notice before your coverage ends, usually giving you a few days to arrange transportation or home care.

If you disagree with the discharge decision, you have the right to appeal. You can request a detailed explanation of why your care is ending and can ask for a peer-to-peer review where your doctor speaks directly with a Medicare reviewer.

What you pay during your stay

Under Original Medicare, you pay nothing for days 1 through 20 of your SNF stay. Starting on day 21, you pay a daily copay. In 2024, that copay is $194.50 per day, though Medicare adjusts this amount each year. From day 101 onward, you pay the full cost of the facility — typically $300 to $500 per day or more, depending on the facility and your location.

If you have a Medigap (supplemental insurance) plan, it may cover some or all of your copays. If you have a Medicare Advantage plan, your costs depend on your specific plan — some cover SNF stays differently than Original Medicare does, and some have different daily limits. Check your plan documents or call your plan before you are admitted so you know what to expect.

These costs do not include medications, medical equipment, or services beyond the basic facility care. Ask the facility's billing department for an itemized estimate before or shortly after admission.

Conditions that typically may have access to for Medicare-covered rehabilitation

Medicare covers SNF care for people recovering from specific medical events or conditions that require daily skilled nursing or therapy. Common reasons include recovery from hip or knee replacement, stroke, heart attack, pneumonia requiring IV antibiotics, or a fall with fracture. You must have a condition that genuinely requires a nurse or therapist to oversee your care daily.

Medicare does not cover custodial care — help with bathing, dressing, or meals alone — even if you need it. The care must be skilled: wound dressing changes, medication management, physical or occupational therapy, or monitoring for complications. If you need only help with daily living activities, you may be able to use home health care or hire private caregivers, but Medicare will not cover a SNF stay for that purpose.

What happens if you need care beyond 100 days

If you reach 100 days and still need rehabilitation, Medicare stops paying. At that point, you have several options. You can pay privately if you have the resources. You can look into Medicaid coverage if you meet income and asset limits — Medicaid rules vary by state, and some states cover extended SNF stays. You can explore whether your condition qualifies for home health care, which Medicare may cover for longer periods if you are homebound.

Some facilities offer a transition to a lower level of care, such as assisted living or a residential care home, which may be less expensive than a SNF. Your social worker or discharge planner can help you explore these options before your 100 days are up. Starting this conversation early — around day 80 or 90 — gives you time to plan and avoid a rushed discharge.

Medicare-certified facilities and how to verify one

Medicare only pays for care in a facility that is Medicare-certified as a skilled nursing facility. Not all nursing homes are certified; some are licensed only for custodial or assisted living care. Before you are admitted, ask whether the facility is Medicare-certified. You can also check the Medicare Care Compare website (care.cms.gov), which lists all certified SNFs and shows their inspection records, staffing levels, and quality ratings.

If you are admitted to a non-certified facility, Medicare will not pay, and you will be responsible for the full bill. This can happen if you are transferred from a hospital to a facility that does not have Medicare certification. Always confirm certification before transfer or as soon as possible after admission.

Frequently Asked Questions

Can I stay in rehab longer if I am making slow progress?

Medicare does not have a set timeline for discharge based on progress speed. Your stay continues as long as your doctor believes you need daily skilled care and are making measurable progress toward your goals. If you are improving but slowly, your care may continue. If you stop improving or reach a plateau where further skilled care will not help, your coverage ends regardless of how much time remains.

What is the difference between a skilled nursing facility and a regular nursing home?

A skilled nursing facility has nurses and therapists on staff and provides medical care like wound dressing, IV medications, and rehabilitation therapy. A regular nursing home (custodial care facility) provides help with daily living but not skilled medical care. Medicare covers SNF stays but not custodial nursing home stays. Some facilities have both units, so ask which unit you are in.

If I leave rehab early, can I come back and use the rest of my 100 days?

No. Once you are discharged, that benefit period ends. If you are readmitted to a hospital within 60 days and then return to a SNF, you use the same benefit period and the same 100-day limit. If you are readmitted after 60 days have passed since your hospital discharge, a new benefit period begins and you get another 100 days.

Does Medicare cover rehabilitation at home instead of in a facility?

Yes, but under different rules. Home health care is covered by Medicare Part A if you are homebound and your doctor orders it. Home health can include physical therapy, occupational therapy, and nursing care. However, you do not need a prior hospital stay for home health, and there is no 100-day limit — coverage continues as long as you are homebound and need skilled care. Home health may be an option if you can safely recover at home with support.

What happens if I cannot afford the copays starting on day 21?

Talk to the facility's financial counselor or social worker when ready. Some facilities have financial information programs or can work with you on payment plans. If you have limited income, you may be may be able to access for Medicaid, which can cover Medicare copays in some states. Your state's Medicaid office or a local Area Agency on Aging can tell you whether you may have access to and how the process works.