“Medicare covers 100 days” is one of the most repeated, and most misunderstood, lines in senior care. The real answer to how long Medicare pays for rehab is: as long as your loved one keeps needing daily skilled care, up to 100 days in a benefit period. Here is what that means in practice.
If you are still in the hospital and want the basics on qualifying for a rehab stay, start with what Medicare covers after a hospital stay. This page picks up once rehab is underway.
The 100-day timeline and what it costs in 2026
| Stretch of the stay | Original Medicare pays | Your share |
|---|---|---|
| Days 1 to 20 | All covered costs | $0 (once the $1,736 Part A deductible for the benefit period is met, usually during the hospital stay) |
| Days 21 to 100 | All but the coinsurance | $217 per day |
| Day 101 on | Nothing | All costs |
That $217 a day adds up quickly: a full stretch from day 21 to day 100 would be over $17,000. A Medigap policy, TRICARE For Life, or Medicaid may pick up that coinsurance. Covered care includes a semi-private room, meals, skilled nursing and therapy.
What actually decides when coverage ends
Coverage depends on one question, asked again and again during the stay: does your loved one still need daily skilled care that can only practically be given in a skilled nursing facility? Skilled care means services that require a nurse or therapist, such as therapy several days a week, wound care, IV medications or close nursing monitoring.
When the care your loved one needs becomes mostly help with bathing, dressing, eating and getting around, Medicare considers it custodial, and coverage ends even if it is day 15.
“She has plateaued” is not, by itself, a reason to end coverage. Under the Jimmo settlement, CMS confirmed that Medicare has never required a patient to be improving. Skilled care to keep someone from getting worse, or to preserve what they can still do, can be covered. If you hear “no progress,” ask whether your loved one still needs skilled care to maintain their condition.
How benefit periods reset
The 100 days belong to a benefit period, not to a lifetime or a calendar year. A benefit period begins when someone is admitted to a hospital or skilled nursing facility, and it ends once they have gone 60 days in a row without inpatient hospital care or Medicare-covered skilled nursing care. After that, a new hospital stay of three inpatient days can open a fresh 100 days, with a new Part A deductible. If your loved one goes back to the hospital before 60 days have passed, they stay in the same benefit period and pick up where they left off on the day count.
If you are told coverage is ending
The facility should give you a written Notice of Medicare Non-Coverage at least two days before covered services end. If you think it is too soon:
- Call the independent reviewer listed on the notice, the BFCC-QIO, no later than noon the day before the end date.
- Ask the doctor and therapists to put in writing why skilled care is still needed.
- Expect a decision, usually by the end of the day after the reviewer has the information it needs.
A fast appeal costs nothing to file. While it is pending, ask the facility how billing will be handled if the appeal is denied.
When the hospital used observation status
Time in the hospital under observation does not count toward the three inpatient days needed to qualify for rehab. Since February 14, 2025, a patient who was admitted as an inpatient and then switched to observation during the same visit should receive a Medicare Change of Status Notice and can request a fast appeal through the BFCC-QIO. Ask for that notice before leaving the hospital if you do not receive it.
Medicare Advantage plays by different rules
Medicare Advantage plans may charge copays during the first 20 days, may waive the three-day hospital requirement, and commonly require the plan to approve a rehab stay in advance and to keep re-approving it. Plans also choose which facilities are in network. Ask the plan for its approval in writing, and ask the facility how often the plan reviews the stay. If the plan stops covering the stay, you still have appeal rights.
What to do next
- Ask the rehab team at the first care meeting what goals they are working toward and how long they expect the stay to last.
- Start planning the next step in the first week: home with home health, assisted living, or long-term care.
- Keep every notice the facility hands you, with the date.
- If coverage ends sooner than seems right, appeal by the noon deadline.
Common questions
Does Medicare always pay for 100 days of rehab?
No. Medicare pays up to 100 days in a benefit period only while daily skilled care is needed. Many stays are shorter.
What happens after Medicare stops paying for rehab?
Your loved one can stay and pay privately, use long-term care insurance or Medicaid if eligible, or move home or to another setting. Compare skilled nursing and other options before the last covered day.
Can Medicare stop paying for rehab because my mom is not improving?
Not for that reason alone. Medicare covers skilled care that maintains a person’s condition or slows decline. Coverage ends when skilled care is no longer needed.
How many days of rehab does Medicare pay in full?
In Original Medicare, the first 20 days are covered at $0 for the room, care and therapy. From day 21 to 100, you pay $217 a day in 2026.
Rehab ending and not sure what comes next? We can help you line up the next step, free. Tell us about your loved one or call 801-859-7000.
Sources
- Medicare.gov: Skilled nursing facility care
- CMS: 2026 Medicare deductible, coinsurance and premium rates (MM14279)
- CMS: Jimmo v. Sebelius settlement fact sheet
- Medicare.gov: Fast appeals from non-hospital settings
- Medicare.gov: Appealing a hospital status change
- Medicare Rights Center: Benefit periods
This guide is general information, not medical, legal or financial advice. Coverage rules change; confirm details with the program or your plan.
