Medicare Part A: What It Covers and What It Costs

What is Medicare Part A?

In short: Medicare Part A is hospital insurance: inpatient stays, skilled nursing after a hospital stay, hospice and some home health. In 2026 the deductible is $1,736 per benefit period, and most people pay no premium.

Your father is in the hospital. A nurse says "he's in observation," or "he's admitted," and you nod, because nobody has told you that those two words can change what comes next. Part A is where that difference lives.

If your parent has just been discharged, or is about to be, and nobody has booked the follow-up or the nursing facility, a navigator can make those calls and track them. Navigate Care explains how that works on its hospital discharge page, and what it may cost on its what you will pay page.

Most families meet Part A at the worst moment. A bill arrives, or a facility says "Medicare covers 20 days," and the rules behind it were never explained. You are not failing at this. Part A has its own clock, its own vocabulary and its own cliff edges, and they are easier to see before you need them.

What Medicare Part A covers

Medicare.gov says Part A helps pay for inpatient care in hospitals, critical access hospitals and skilled nursing facilities. It also helps cover hospice care and some home health care. Four things, and each has conditions.

Inpatient hospital care. This is care you get when you are admitted for at least one night. Medicare.gov's inpatient hospital page lists a semi-private room, meals, general nursing, certain drugs and the other services and supplies that are part of the inpatient treatment. A private room is covered only if it is medically necessary. Private-duty nursing is not covered.

Skilled nursing facility care. After a qualifying hospital stay, Part A can pay for a stay in a skilled nursing facility: semi-private room, meals, skilled nursing, and physical, occupational and speech therapy when needed. It is for people who need daily skilled care, not for someone who is simply unable to live alone. More on that below, because it is where most families get caught.

Hospice. Part A covers hospice for people who are terminally ill and choose comfort care. AARP notes that it includes respite care for up to five days, which gives a family caregiver a short break. We go through the rest in our guide to whether Medicare covers hospice.

Some home health. Home health can come under Part A or Part B, depending on the timing. Your parent needs part-time skilled care and a doctor's certification, and the agency has to be Medicare-approved. Our Medicare Part B guide covers the "homebound" test and what home health leaves out.

What Part A costs in 2026

There are three kinds of cost, and they arrive in a different order than you would guess. A premium that is usually $0. A deductible every time your parent starts a new benefit period. And a daily charge if the stay runs long.

A benefit period is how Part A counts. AARP says it begins when you are admitted to a hospital or skilled nursing facility as an inpatient, and ends after you have been out of both for 60 days in a row. It is not the calendar year. Your parent can have two benefit periods in one year, and pay the deductible twice. Or one stay that spans New Year's and pays it once.

What Part A costs in 2026 for an inpatient hospital stay and a skilled nursing facility stay

Source: Medicare.gov, inpatient hospital care and skilled nursing facility care

Two notes on that table. The lifetime reserve days are 60 extra days in your parent's whole life, not per stay, and once they are used they are gone. Medicare.gov lists them as days 91 to 150 at $868 a day. And if your parent has a Medicare Advantage plan, the nursing facility days can be charged differently: Medicare.gov says those plans may charge copayments in days 1 to 20. Read the plan's own summary.

Here is how it feels with round numbers, an illustration and not a real bill. Say your mother is in the hospital for 10 days and then moves to a skilled nursing facility for 25 more. She pays the $1,736 deductible once. After that, the first stretch costs $0 a day. Then, because she has used up the first 20 days of the facility benefit, the last 5 days of that stay are $217 each. A supplemental policy may cover some of that, so find out whether she has one.

Admitted or observation: the rule behind the nursing facility bill

Medicare.gov says skilled nursing facility care is covered after "a prior medically necessary inpatient hospital stay of at least 3 days in a row." Your parent also generally has to enter the facility within about 30 days of leaving the hospital.

Here is the catch. Time spent in the emergency room, or under observation, does not count toward those three days. Medicare.gov says so on the same page. AARP says the same: a stay "for observation" that does not carry inpatient status will not count.

So your mother can sleep in a hospital bed for three nights and still not have a qualifying stay. Nobody did anything wrong. The bed looks the same either way; the paperwork is what differs. That's the part worth being annoyed about.

What to do about it, in order:

1. Ask on day one: "Is she admitted as an inpatient, or is she here for observation?" Ask the nurse, then ask the case manager.
2. If it is observation, ask why, and whether the doctor expects to admit her.
3. Before any move to a nursing facility, ask the hospital's discharge planner to confirm in writing whether the stay will count toward the three days.
4. If the answer is no, ask what else is available. Home health may still be an option, and the plan for the next few weeks is worth settling before discharge, not after.

We can't tell you how a particular hospital will classify a stay. We can tell you the question is worth asking early. If a claim comes back denied, our guide on how to appeal a Medicare denial covers the clock, and we can't promise an appeal will succeed.

Who gets Part A without a premium

For most people, Part A costs nothing each month. Medicare.gov's costs page says the premium is $0 for most people who, or whose spouse, paid Medicare taxes for enough years. AARP puts it as 40 quarters of work.

If your parent worked fewer quarters, the premium is not zero. In 2026, AARP says it is $311 a month for 30 to 39 quarters of work and $565 a month for fewer.

Part A monthly premium in 2026, by work history

Source: AARP, what is Medicare Part A and Medicare.gov, Medicare costs

A spouse's record can count, which matters for a parent who spent years at home raising children. Social Security can check a work record. Who qualifies at all is a longer question, and we answer it in Who Qualifies for Medicare.

When to sign up for Part A

Most people sign up in the seven-month window around their 65th birthday: three months before the birthday month, the month itself and three months after. The steps are in our guide on how to apply for Medicare. AARP says if you enroll before your birthday month, coverage starts on the first day of that month.

If your parent gets Social Security retirement benefits before turning 65, enrollment in Parts A and B is usually automatic. Check the mail for the card before assuming nothing has happened.

If your parent has to buy Part A, waiting costs more. Medicare.gov says that if you have to buy Part A and don't when you are first eligible, your monthly premium may go up 10%, and you pay the penalty for twice the number of years you didn't sign up. If your parent gets Part A free, this penalty doesn't apply. Whether to delay Part B while still working is a different question; Social Security or SHIP, the free State Health Insurance Assistance Program, can answer it for your parent's situation.

What Part A does not cover

The list that matters most to families is short.

• Custodial care, meaning help with bathing, dressing or meals when it is the only care your parent needs. Medicare generally does not pay for it.
• A private room that isn't medically necessary.
• Private-duty nursing.
• Doctor visits, outpatient care and equipment, which are Part B. Our Medicare Part B guide goes through them.
• Prescription drugs from a pharmacy, which are mostly Part D. See Medicare Part D.

If your parent is on a Medicare Advantage plan, it has to cover at least what Parts A and B cover, but rules and costs differ. Our post on Medicare Part C explains how. For the whole picture, see Medicare insurance plans compared.

Where a navigator comes in

A navigator doesn't treat or diagnose, and doesn't decide whether a stay is inpatient. The hospital and your parent's doctor do that. What a navigator does is the follow-through: asking the discharge questions, booking the follow-up, tracking the home health referral and the equipment.

Medicare doesn't automatically cover navigation. It depends on a qualifying condition or need and a provider visit. For patients with supplemental coverage the cost is usually $0, and we confirm your cost before you start. SHIP is free and is a fair first stop for a plan or billing question.