The 100-day rule, plainly
Traditional Medicare covers up to 100 days of skilled nursing facility care per benefit period, after a qualifying hospital stay. Within those 100 days the cost-sharing shifts partway through:
| Days | What you generally pay (traditional Medicare) |
|---|---|
| Days 1–20 | Covered in full — no daily copay for the covered skilled care |
| Days 21–100 | A daily copay applies (an amount set each year), with Medicare covering the rest |
| Day 101 and beyond | Medicare no longer pays; the stay becomes private pay, Medicaid, or a move home |
What actually ends coverage
Medicare pays only while your loved one needs daily skilled care — meaning skilled nursing or therapy that has to be delivered by professionals. Coverage ends when any of these happen:
- The person no longer needs skilled care — they've recovered enough, or their progress has leveled off and only ordinary daily help remains.
- They stop participating in or benefiting from therapy.
- The 100-day ceiling is reached.
- They leave skilled care for long enough that the benefit period closes.
That first point causes the most heartbreak: coverage can stop because someone has plateaued, even though they still can't safely live at home. “No longer improving” and “ready to go home” are not the same thing — but Medicare's skilled-care test turns on the former.
How to see the last day coming
The facility must give you written notice before Medicare-covered care ends — and you have the right to appeal if you think it's ending too soon. The key is to watch for the signal early, not to be handed a notice on a Friday afternoon.
Stay ahead of the end date
- Ask in the first days: “What's the therapy goal, and roughly how long do you expect Medicare to cover this?”
- Go to the care-plan meetings — that's where you'll hear whether progress is slowing
- Watch for the phrase “plateauing” or “not making progress” — that's the early warning that coverage may end
- When you get the written end-of-coverage notice, read the appeal instructions on it — appealing usually pauses the clock while it's reviewed
- Line up the next step (home with help, private pay, or a Medicaid application) before day 100, not on it
Medicare Advantage is a little different
If your loved one has a Medicare Advantage plan, the same broad idea applies — short-term skilled care, not long-term living — but the plan sets its own rules for prior authorization, in-network facilities, and how long it approves at a time. Advantage plans often approve care in short increments and re-review frequently, so coverage decisions can come faster. Call the plan early and ask exactly how their skilled-nursing coverage and appeals work.
When Medicare stops, what's next?
- Going home — often the goal, with outpatient or in-home therapy continuing the recovery.
- Private pay — paying the facility's daily rate directly, if long-term care is needed and savings allow.
- Medicaid — the main payer for ongoing long-term care once someone qualifies; start the application early because it takes time.
Medicare vs. Medicaid: who pays for what