Whether Medicare pays turns on one word in her chart

The $1,736 deductible is per benefit period, and it is not owed a second time if it was already paid for hospital care within the same benefit period. The point of putting the $17,360 in front of you is that “Medicare covers rehab” and “Medicare covers rehab for twenty days” are very different sentences, and families are usually told the first one.

Does Medicare pay for rehab after a hospital stay?

It can, but only after a medically necessary inpatient hospital stay of at least three days in a row. The count starts the day your parent was admitted as an inpatient and does not include the day they leave. They also have to enter a Medicare-certified skilled nursing facility within a short time of leaving hospital — generally 30 days — and need daily skilled care. Miss any of those and Medicare does not pay for the stay.

The hospital kept my mother three days but Medicare says it will not pay. How?

Almost certainly because some or all of those days were billed as observation rather than as an inpatient admission. Medicare.gov is explicit that time spent at the hospital under observation, or in the emergency room before admission, does not count toward the three-day qualifying inpatient stay. She can be in a hospital bed, on a ward, for three nights, and still have zero qualifying days. Nothing about the room or the care tells you which it was — only the billing status does.

How do I find out whether she is an inpatient or under observation?

Ask, in those words, every day: 'Is she admitted as an inpatient, or is she under observation?' And ask for the Medicare Outpatient Observation Notice, the MOON. Under the NOTICE Act a hospital must give that written notice to a Medicare beneficiary receiving observation services as an outpatient for more than 24 hours, no later than 36 hours after observation services start. Staff must also explain it to you out loud, and a signature has to be obtained from the patient or someone acting for them.

What does rehab cost on Medicare in 2026?

For a covered stay in a skilled nursing facility: days 1 to 20 cost $0 a day once the $1,736 deductible for that benefit period is paid, and that deductible is not owed again if it was already paid for hospital care in the same benefit period. Days 21 to 100 cost $217 a day. From day 101 you pay all costs. Coverage is capped at 100 days per benefit period. Eighty days of coinsurance at $217 is $17,360, which is the figure worth knowing before anyone says 'Medicare covers rehab'.

Are there any exceptions to the three-day rule?

Yes, two worth checking. The requirement can be waived if the doctor is in an approved Accountable Care Organization, and a Medicare Advantage plan may waive it — plans differ, so read that plan's own rules rather than assuming either way. Medicare Advantage plans may also charge copayments during the first 20 days, which original Medicare does not. Separately, Medicare.gov notes that it may be possible to appeal past hospital stays going back to January 2009 where the status was changed to outpatient observation.

What happens when rehab ends?

Usually one of three things: home with help, home with In-Home Supportive Services, or a licensed care home. Rehab is short-term by design and the discharge planner will often raise the next step with a few days' notice. That next step is what we do — we find the licensed Anaheim care home that can take her at the level she is at when rehab finishes, not the level she was at when she went in.

Coverage conditions and all 2026 dollar figures read at medicare.gov, skilled nursing facility care coverage page. MOON requirements read at cms.gov. Both read 13 October 2026. We have not published whether the MOON applies to Medicare Advantage enrollees, because CMS's own fact sheet does not say and the secondary sources that do say it are not the rule. General information for families, not legal or medical advice — for a coverage dispute, the Health Insurance Counseling and Advocacy Program (HICAP) is free.

Last reviewed October 13, 2026. Medicare dollar figures change every January; this page is re-read at source when they do.