She Fell at 79 and Spent 22 Days in Rehab. Medicare Covered the First 20 in Full, Then the Bill Started at $217 a Day

Picture a 79-year-old widow, the kind of case elder law attorneys see every week. She slips on a throw rug, breaks a hip, spends four nights admitted at the hospital, and is discharged to rehab for 22 days.

For days 1 through 20, she owes nothing for covered skilled nursing services. On days 21 and 22, the facility bills her $217 a day, or $434. She had already paid the Part A inpatient hospital deductible of $1,736 during the hospital stay.

In 2026, Medicare Part A covers a skilled nursing facility stay in full for the first 20 days of a benefit period, then charges a daily coinsurance of $217.00 for days 21 through 100.

Small money, in her case. The same rule produces five-figure bills when a stay runs closer to the full 100 days, and it is the rule most families learn about the week it hits them.

How the Tiers Work

Medicare Part A covers inpatient hospital care, skilled nursing facility care, hospice, inpatient rehabilitation, and some home health care.

Inside a benefit period, a skilled nursing stay breaks into three tiers. Days 1 through 20 carry no coinsurance for covered services. Days 21 through 100 carry the daily coinsurance, $217 in 2026, up from $209.50 in 2025. After day 100, the patient pays the entire bill.

Two distinctions trip families up.

The first is between programs. Medicare is the federal health program for people 65 and older, along with certain people under that threshold with qualifying disabilities or end-stage renal disease. Medicaid is the joint federal-state program that pays for long-term nursing home care after someone has spent down their assets. Medicare will not pay past day 100, and it does not cover a skilled nursing stay when custodial care, meaning help with bathing, dressing, and eating, is the only care needed. Custodial assistance can still be provided during an otherwise covered skilled stay. Open-ended custodial care is Medicaid’s territory, and only for those who qualify financially.

The second is between hospital statuses, and it is the more expensive mistake.

The Observation Trap

Under standard Original Medicare rules, the skilled nursing benefit does not apply unless the patient first had a qualifying three-day inpatient hospital stay. Observation days do not count. Some Medicare Advantage plans waive this requirement, so check the plan.

A patient can sleep in a hospital bed for three nights, receive meals and an IV, and still be classified as outpatient under observation. When that happens, Medicare denies the skilled nursing claim entirely and the family is billed the facility’s full private-pay rate from day one.

Ask the hospital in writing whether the status is inpatient or observation. If it is observation and the clinical picture supports admission, ask the physician and the hospital’s utilization-review staff to reconsider it before discharge.

What the 22-Day Bill Looks Like

Back to the widow. Assuming her hospital stay was genuinely inpatient, her costs are the $1,736 Part A inpatient deductible, which covers hospital days 1 through 60, then nothing for rehab days 1 through 20, then $434 for days 21 and 22.

Coverage depends heavily on what else she carries. Many Medigap plans, including Plans G and N, cover both the Part A deductible and the skilled nursing coinsurance, though not every standardized plan covers both. A Medicare Advantage plan follows its own cost-sharing schedule, often a flat daily copay for a set number of skilled nursing days, so the math changes plan by plan. Traditional Medicare with no supplement leaves the patient responsible for every dollar above the covered days.

Coverage gaps like this one, and the other bills that arrive after a Medicare decision, are mapped in our free Medicare guide.

The Improvement Standard

Families have been known to receive a cut-off notice well before day 20, on the stated grounds that the patient has stopped making measurable progress in therapy.

That reasoning reflects the old improvement standard, which was rejected under the Jimmo legal settlement of 2013. Medicare can cover maintenance care when skilled services are needed to preserve function or slow deterioration. Coverage may end when skilled care is no longer medically necessary. It does not end merely because progress plateaus.

This matters most for stroke and dementia patients, whose recovery curves flatten by nature. If the therapists disagree with the notice, appeal in writing the same day.

When 22 Days Turns Into 100

The harder version of this story is the patient whose rehab stretches to day 60, 80, or 100. Across days 21 through 100, the coinsurance totals $17,360. On day 101, Medicare’s share ends and the family faces the facility’s private-pay rate.

That is the moment families call an elder law attorney about Medicaid. Income limits, the community spouse resource allowance, and home equity caps are set within federal ranges but administered state by state. Whatever the state, the five-year lookback on asset transfers runs backward from the date of the Medicaid application, not forward from the date of the fall.

One Timing Rule Worth Knowing

A new benefit period, with a fresh set of fully covered days, begins after 60 consecutive days without inpatient hospital care or skilled care in a nursing facility.

The patient does not have to leave the building. Someone who remains in the same facility receiving private-pay custodial care is still running out that 60-day clock.

For a retiree living on Social Security, a $217 daily charge lands hard. Knowing when it starts, and how to keep it from starting at all, is most of the fight.

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