---
title: "Medicare's 3-day rule for skilled nursing, explained"
description: "Medicare covers skilled nursing facility care only after 3 inpatient days. How observation affects it, the 30-day window and 2026 costs."
url: https://seniorchoicecare.com/after-the-hospital/medicare-3-day-rule/
updated: 2026-10-10
site: Senior Choice Care
---

Quick answer

# The Medicare 3-day rule for skilled nursing facility care

The rule is short, but it trips up many families because of one detail: time under observation doesn't count, even when your parent spent the night in a hospital bed.

**2 minute read** Updated October 9, 2026Written by the Senior Choice Care team

In short

Original Medicare covers skilled nursing facility care only after a qualifying inpatient hospital stay of at least three consecutive days, not counting the day of discharge. Time as an outpatient under observation does not count. Your parent must also enter a Medicare-certified SNF within 30 days of leaving the hospital and need daily skilled care.

**Written by the Senior Choice Care team** Updated October 9, 2026. Facts are checked against the sources listed at the end of this page. General information; every family is different.

**On this page**

1. [ The conditions, in full](#s-the-conditions-in-full)
2. [How to count the days](#s-how-to-count-the-days)
3. [What your parent pays in 2026](#s-what-your-parent-pays-in-2026)
4. [If the stay doesn't qualify](#s-if-the-stay-doesn-t-qualify)
5. [Questions families ask](#s-faq)

## The conditions, in full

### Medicare SNF coverage

Part A
Your parent has Medicare Part A and days left in the benefit period

Qualifying stay
At least 3 consecutive inpatient days; the discharge day doesn't count

Timing
Admission to the SNF within 30 days of leaving the hospital

Facility
A Medicare-certified skilled nursing facility

Need
Skilled nursing or therapy that is medically necessary

## How to count the days

Inpatient time starts when the doctor writes an order to admit. Medicare.gov's example: a patient who comes to the ER, spends one night in observation and is admitted on the second day was an outpatient for that first night. If your parent arrives Monday, is admitted Tuesday and leaves Friday, the inpatient days are Tuesday, Wednesday and Thursday. Friday is the discharge day.

## What your parent pays in 2026

^ Original Medicare SNF costs per benefit period, 2026

| Days | Your parent pays |
|---|---|
| --- | --- |
| 1 to 20 | $0 per day, after the Part A deductible ($1,736) |
| 21 to 100 | $217 per day |
| 101 and after | All costs |

Some Medigap policies pay all or part of the day 21 to 100 coinsurance. Medicare Advantage plans set their own rules and costs, so check with the plan.

## If the stay doesn't qualify

Ask the hospital, before discharge, whether your parent was an inpatient and for how many days. If the stay won't qualify, ask about home health, which has no hospital-stay requirement, or how a private-pay rehab stay would be billed.

## Questions families ask

### Does observation count toward the 3-day rule?

No. Observation is an outpatient service, so those hours and nights don't count, even in a regular hospital bed.

### Does the day of discharge count?

No. Medicare counts consecutive inpatient days and does not count the discharge day.

### Do Medicare Advantage plans use the 3-day rule?

Plans set their own coverage rules for skilled nursing. Ask the plan directly before discharge.

### Is there a time limit for going to the SNF?

Yes. Medicare's SNF booklet says your parent must be admitted within 30 days of hospital discharge.

## Sources

- [Medicare Coverage of Skilled Nursing Facility Care (booklet 10153)](https://www.medicare.gov/publications/10153-medicare-coverage-of-skilled-nursing-facility-care-508.pdf)
- [Medicare.gov: Skilled nursing facility care](https://www.medicare.gov/coverage/skilled-nursing-facility-snf-care)
- [Medicare.gov: Inpatient or outpatient hospital status affects your costs](https://www.medicare.gov/what-medicare-covers/what-part-a-covers/inpatient-or-outpatient-hospital-status)
- [CMS: 2026 Medicare deductible, coinsurance and premium rates](https://www.cms.gov/files/document/mm14279-medicare-deductible-coinsurance-premium-rates-cy-2026-update.pdf)

## Read next

- [After the hospital](https://seniorchoicecare.com/after-the-hospital/)
- [Observation vs inpatient](https://seniorchoicecare.com/after-the-hospital/observation-vs-inpatient/)
- [SNF vs IRF](https://seniorchoicecare.com/after-the-hospital/snf-vs-irf/)
- [Skilled nursing](https://seniorchoicecare.com/care-options/skilled-nursing/)
- [Acute vs subacute rehab](https://seniorchoicecare.com/after-the-hospital/acute-vs-subacute-rehab/)
- [Short-term rehab](https://seniorchoicecare.com/after-the-hospital/short-term-rehab/)

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