Medicare's 3-Day Rule for Skilled Nursing Care, Explained

After a hip replacement, a stroke, or a serious infection, many Texans need a few weeks of rehab before they can safely go home. Medicare Part A can cover that care in a skilled nursing facility (SNF). But one rule decides whether it pays at all.

The rule in one sentence

Part A generally covers skilled nursing care only if you first had a medically necessary inpatient hospital stay of at least three days in a row.

What counts, and what doesn't

Counts:

• Days after a doctor orders your admission and the hospital formally admits you
• The day you're admitted

Doesn't count:

• Time in the emergency room before you're admitted
• Time under observation, even overnight in a regular hospital bed
• The day you're discharged

This is where families get caught off guard. Medicare's own example: one day under observation followed by two inpatient days doesn't qualify, even though the person spent three days in the hospital.

The other requirements

• The facility is Medicare-certified.
• You generally enter it within 30 days of leaving the hospital.
• You need daily skilled care, such as physical therapy or IV medication, given by or under the supervision of skilled staff.
• The care aims to improve or maintain your condition, or to prevent or slow its decline.

What you pay in 2026

Days in the facility	What you pay (per benefit period)
Days 1–20	$0
Days 21–100	$217 per day
After day 100	All costs

A 40-day stay would mean 20 days at $217, or $4,340, unless other coverage helps. These are 2026 amounts; 2027 figures are announced each fall.

How to protect yourself

1. Ask every day: "Am I an inpatient or an outpatient under observation?" Medicare encourages you to ask.
2. Watch for the MOON. If you're under observation for more than 24 hours, the hospital must give you a Medicare Outpatient Observation Notice explaining your status and costs.
3. Ask your doctor whether your condition supports an inpatient admission.
4. Check your other coverage. Some Medigap policies help with the daily coinsurance. Some Medicare Advantage plans waive the 3-day rule, though they may require prior approval and charge their own copays. Your doctor may also be part of an Accountable Care Organization approved to waive it.

Rural Texas: plan for the transfer

In much of Texas, the hospital that treats you may be hours from home, and the nearest Medicare-certified rehab facility may be somewhere else entirely. Before discharge, ask the case manager which certified facilities near your family have a bed, and whether your coverage works with them. You can compare facilities on Medicare's Care Compare tool. If you're well enough to go home but still need skilled nursing or therapy, Medicare home health care may be another option.

Hurricanes and declared emergencies

During a declared public health emergency, such as a major Gulf Coast hurricane, CMS can temporarily waive the 3-day hospital stay requirement for people affected by the emergency. These waivers are specific to each disaster, so if a storm displaces you or a loved one, ask the facility or your plan whether one is in effect. Keep your Medicare card and a medication list in your hurricane go-kit.

What happens after day 100

Medicare stops paying for skilled nursing care after 100 days in a benefit period. Original Medicare also doesn't cover custodial care, like help with bathing and dressing, when that's the only care you need. Long-term nursing home care is usually paid out of pocket, by long-term care insurance, or by Texas Medicaid for people whose income and assets fall below set limits. Texas Health and Human Services explains the rules, including a requirement to live in a nursing home for 30 days in a row before applying.

A new benefit period, with a fresh 100 days, starts only after you've gone 60 days in a row without inpatient hospital or skilled nursing care. For more on hospital coverage, see our guide to Medicare Part A, or call Texas HICAP at 1-800-252-9240 for free counseling.