Medicare covers up to 100 days of inpatient rehabilitation per benefit period, but the number of days you actually receive depends on medical necessity and the type of facility.

Medicare Part A pays for rehabilitation in a skilled nursing facility (SNF) or inpatient rehabilitation facility (IRF) only if you meet specific conditions: you must have been admitted to a hospital for at least three consecutive days, you must be admitted to the rehab facility within 30 days of hospital discharge, and a doctor must order the care as medically necessary. The facility itself must be Medicare-certified. If these conditions are met, Medicare covers the full cost of the first 20 days, then requires you to pay a daily coinsurance amount (currently $194.50 per day in 2024, though this changes yearly) for days 21 through 100.

The actual number of days you receive is not automatic. A doctor and the facility's care team decide how many days are medically necessary based on your condition, progress, and discharge plan. You might be discharged after 15 days if you recover faster than expected, or you might use all 100 days if your recovery is slow. Medicare will not pay beyond 100 days in a single benefit period, even if your doctor believes you need more care.

Key Takeaways

  • Medicare covers up to 100 days of inpatient rehabilitation per benefit period if you were hospitalized for at least three consecutive days first.
  • You pay nothing for days 1–20, then $194.50 per day (2024 rate) for days 21–100; the exact amount changes each year.
  • The number of days you actually receive is determined by your doctor and the facility based on medical necessity, not by the 100-day limit alone.
  • Rehabilitation must begin within 30 days of hospital discharge and take place in a Medicare-certified skilled nursing or inpatient rehabilitation facility.
  • If you need care beyond 100 days, you may be responsible for the full cost unless you have supplemental insurance or meet other coverage programs.

The Three-Day Hospital Stay Requirement

Before Medicare will pay for any inpatient rehabilitation, you must have spent at least three consecutive days in a hospital as an inpatient. This means you were admitted and stayed overnight; a same-day procedure or observation status does not count. The three days must be consecutive calendar days, though the clock stops if you are discharged and readmitted later.

This requirement exists because Medicare considers rehabilitation a continuation of acute hospital care. If you did not meet the three-day threshold, you are not may be able to access for Medicare-covered inpatient rehabilitation, even if your doctor orders it. In that case, you would need to pay out of pocket or look into other coverage options such as Medicare Advantage plans, which sometimes cover rehabilitation under different rules.

Where Rehabilitation Can Take Place

Medicare covers inpatient rehabilitation in two types of facilities: skilled nursing facilities (SNFs) and inpatient rehabilitation facilities (IRFs). A skilled nursing facility is typically attached to or part of a hospital and provides nursing care, therapy, and medical supervision. An inpatient rehabilitation facility is a separate hospital unit or standalone facility that specializes in intensive rehabilitation for conditions like stroke, spinal cord injury, or major surgery recovery.

The facility must be Medicare-certified, which you can verify by asking the facility directly or by searching the Medicare Care Compare tool on Medicare.gov. Not all nursing homes or rehabilitation centers are certified for Medicare inpatient care, so it is important to confirm before admission. If you are admitted to a non-certified facility, Medicare will not pay, and you will be responsible for the bill.

How Medical Necessity Determines Your Length of Stay

The number of days Medicare pays for is not determined by reaching the 100-day limit. Instead, a doctor and the facility's interdisciplinary team (which includes nurses, therapists, and social workers) assess your medical condition and progress regularly. They decide whether continued inpatient rehabilitation is medically necessary or whether you can be safely discharged to home, outpatient therapy, or another setting.

Medicare's coverage rules require that the care you receive be reasonable and necessary for your condition. If you stop making progress toward your discharge goals, or if your condition stabilizes enough that you no longer need 24-hour nursing care and intensive therapy, the facility may recommend discharge even if you have days remaining. You have the right to request a detailed explanation if the facility recommends discharge, and you can appeal if you believe you need more care.

What You Pay During Your Stay

Medicare Part A covers the full cost of days 1 through 20 with no out-of-pocket cost to you. Beginning on day 21, you pay a daily coinsurance amount set by Medicare each year. For 2024, this amount is $194.50 per day, but it increases annually. You are responsible for this coinsurance for each day you stay from day 21 through day 100.

If you have a Medigap (supplemental insurance) policy, it may cover some or all of this coinsurance, depending on the plan. If you have a Medicare Advantage plan, your costs may be different — some plans charge a daily copay instead of coinsurance, and some may cover more than 100 days under certain conditions. Check your plan documents or call your plan to understand your exact costs before admission.

What Happens After 100 Days

Once you reach 100 days of inpatient rehabilitation in a benefit period, Medicare stops paying. You become responsible for the full cost of any additional care at the facility. This can amount to thousands of dollars per day, depending on the facility's private-pay rate.

If you need ongoing care after 100 days, you have several options. You may be discharged to home with outpatient therapy covered under Medicare Part B, which has different rules and limits. You may move to a long-term care facility, which is not covered by Medicare but may be covered by Medicaid if you meet income and asset limits. You may also continue at the same facility as a private-pay patient if you can afford it. Discuss these options with your care team and social worker before you approach day 100.

The Benefit Period and How It Resets

The 100-day limit applies per benefit period, not per calendar year. A benefit period begins the day you are admitted to a hospital and ends 60 days after you are discharged from the hospital or a skilled nursing facility, whichever is later. If you are readmitted to the hospital after that 60-day window closes, a new benefit period begins, and you get another 100 days of rehabilitation coverage.

This means that if you use 60 days of rehabilitation in January and are discharged, you still have 40 days remaining in that benefit period. If you are readmitted in February (before the 60-day window closes), those 40 days are still available. But if you are not readmitted until April, a new benefit period has started, and you have a fresh 100 days. Understanding this timing can help you plan for longer recovery needs.

Frequently Asked Questions

Do I need my doctor's permission to go to a specific rehabilitation facility?

Your doctor must order inpatient rehabilitation for Medicare to pay, but you have the right to choose a Medicare-certified facility. The hospital discharge planner can suggest facilities, but you can request a different one. Call ahead to confirm the facility accepts Medicare and has a bed available before your hospital discharge.

What if I'm discharged from the hospital but don't go to rehabilitation right away?

You must be admitted to the rehabilitation facility within 30 days of hospital discharge for Medicare to cover it. If you wait longer than 30 days, Medicare will not pay for the rehabilitation, even if your doctor still orders it. Plan your admission before you leave the hospital.

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

No. The 100-day benefit applies only to inpatient rehabilitation in a certified facility. If you receive therapy at home, that is covered under Medicare Part B (home health), which has different rules and does not count toward the 100-day limit. Home health requires that you be homebound and that a doctor order it.

What happens if I disagree with the facility's discharge plan?

You have the right to appeal. Ask the facility for a detailed explanation of why they believe you no longer need inpatient care. You can request a peer-to-peer review, where your doctor speaks directly with a Medicare medical reviewer. You also have the right to stay and dispute the discharge while the appeal is pending, though you may be responsible for costs if the appeal is denied.

Will my Medicare Advantage plan cover more than 100 days?

Some Medicare Advantage plans offer extended rehabilitation benefits beyond the standard 100 days, but this varies by plan and year. Check your plan's summary of benefits or call your plan directly to learn what rehabilitation coverage you have and whether it extends beyond 100 days.