What Does Medicare Part A Cover? Hospital Coverage Explained

Medicare Part A is the hospital insurance component of Original Medicare. While most people are familiar with the concept of Medicare, many are surprised to learn exactly what Part A covers — and what it doesn’t — and how the cost structure works.

If you’re approaching Medicare eligibility, already enrolled, or helping a family member navigate their coverage, this guide explains everything you need to know about Medicare Part A in 2026.

What Is Medicare Part A?

Medicare Part A is one of two components that make up Original Medicare (the other is Medicare Part B, which covers outpatient care). Part A covers inpatient services — care you receive when you are formally admitted to a hospital, skilled nursing facility, or certain other facilities.

Part A is administered directly by the federal government through the Centers for Medicare & Medicaid Services (CMS). Coverage is standardized nationally — the same services are covered regardless of where you live.

What Does Medicare Part A Cover?

Inpatient Hospital Care

The primary function of Part A is covering inpatient hospital stays — situations where a doctor formally admits you to a hospital. Part A covers:

• Semi-private room (or private if medically necessary)
• Meals during your inpatient stay
• General nursing care
• Hospital services and supplies used during your stay
• Inpatient prescription drugs administered as part of your hospital care
• Physical, occupational, and speech therapy provided during the inpatient stay
• Operating room and recovery room services
• Intensive care and other special care units

Part A covers inpatient care at acute care hospitals, critical access hospitals, inpatient rehabilitation facilities, and long-term care hospitals.

What counts as “inpatient”? You are an inpatient when a doctor formally writes an order admitting you to the hospital. Simply being in a hospital overnight doesn’t make you an inpatient — if you’re there for “observation,” you are technically an outpatient and Part B (not Part A) covers your care. This distinction matters enormously for what you pay.

Skilled Nursing Facility (SNF) Care

Medicare Part A covers short-term care in a skilled nursing facility (SNF) — but only under specific conditions:

1. You had a qualifying hospital stay of at least 3 consecutive inpatient days (observation days don’t count)
2. You need skilled care — skilled nursing care, physical therapy, occupational therapy, or speech-language pathology services — not just custodial care (help with daily activities)
3. You are admitted to the SNF within 30 days of your qualifying hospital stay
4. A doctor certifies that you need daily skilled care

If you meet these conditions, Part A covers SNF care as follows:

This 100-day limit is per benefit period, not per year. Many people are surprised to learn that Medicare doesn’t cover long-term nursing home care — only short-term skilled rehabilitative care. If you may eventually need ongoing custodial care, that’s a gap to plan for separately with long-term care insurance or Medicaid long-term care planning.

Home Health Care

Medicare Part A (and Part B) covers home health care services when all of the following are true:

• A doctor certifies that you’re homebound (leaving home requires considerable effort)
• You need skilled nursing care, physical therapy, speech-language pathology, or continued occupational therapy
• The home health agency is Medicare-certified

Covered home health services include:

• Skilled nursing care (up to 8 hours per day, up to 28 hours per week in most cases)
• Physical therapy
• Occupational therapy
• Speech-language pathology services
• Medical social services
• Medical supplies and certain durable medical equipment (partially)

Home health care is a covered benefit at no cost to you when the above conditions are met. There is no prior hospital stay required for home health under Part A (unlike SNF care).

Medicare does not cover custodial or personal care — help with bathing, dressing, eating, or other activities of daily living — unless skilled care is also being provided at the same time.

Hospice Care

Medicare Part A covers hospice care for terminally ill beneficiaries who:

• Have a life expectancy of 6 months or less (certified by a doctor)
• Choose comfort care (hospice) over curative treatment for the terminal illness
• Use a Medicare-approved hospice program

Hospice care is broadly covered. Part A covers:

• Physician and nursing services
• Medications for pain relief and symptom management
• Medical equipment (wheelchairs, walkers, etc.)
• Short-term inpatient care for symptom management
• Inpatient respite care (temporary placement in a facility to give family caregivers a break)
• Grief counseling for family members

Your cost for hospice care is minimal:

• $0 for most hospice care
• $5 or less for each prescription drug for pain and symptom management
• 5% of the Medicare-approved amount for inpatient respite care

Choosing hospice care means focusing on comfort rather than cure. If you decide to resume treatment or recover unexpectedly, you can revoke the hospice election at any time.

Inpatient Psychiatric Care

Medicare Part A covers inpatient care in a psychiatric hospital, up to 190 days in a lifetime. This is separate from the regular inpatient hospital benefit days and applies specifically to freestanding psychiatric hospitals.

Inpatient psychiatric care in a general hospital (rather than a freestanding psychiatric hospital) counts against your regular Part A benefit days. For the full picture of how Medicare covers both inpatient and outpatient behavioral health, see our guide to Medicare mental health coverage.

What Part A Does NOT Cover

Understanding the limits of Part A is equally important:

• Custodial care — long-term nursing home care for help with daily activities is not covered by Medicare at all
• Most dental care, vision, and hearing care — not covered
• Outpatient care — covered under Part B, not Part A
• Outpatient prescription drugs — covered under Part D
• Private-duty nursing — not covered
• Care outside the United States — with very limited exceptions

The absence of long-term care coverage is a significant gap. Medicare is not a substitute for long-term care insurance.

How Much Does Medicare Part A Cost in 2026?

Premium

Most people pay $0 premium for Part A. You qualify for premium-free Part A if:

• You (or a spouse, current, former, or deceased) worked and paid Medicare taxes for at least 40 quarters (10 years)

If you have 30–39 quarters of Medicare-covered employment, your Part A premium in 2026 is $311/month.

If you have fewer than 30 quarters of Medicare-covered employment, your Part A premium in 2026 is $565/month — the full buy-in rate.

These situations are relatively uncommon — most Americans qualify for premium-free Part A through their own or a spouse’s work history. You can also earn additional quarters by continuing to work; reaching 40 lifetime quarters switches you to premium-free Part A. And if you have limited income, a Medicare Savings Program can pay these Part A premiums on your behalf.

Benefit Period Deductible

Part A uses benefit periods rather than a simple annual deductible. A benefit period begins when you’re admitted to a hospital or SNF and ends when you’ve been out of the hospital or SNF for 60 consecutive days.

The Part A deductible applies per benefit period, not per year.

In 2026, the Part A deductible is $1,736 per benefit period.

If you’re hospitalized multiple times in a year and each stay is separated by more than 60 days, you pay the $1,736 deductible each time — unlike Part B’s single annual deductible.

A worked example. Say you’re admitted in February for a five-day stay, discharged, and fully recovered. You pay the $1,736 deductible and nothing more (days 1–60 carry no coinsurance). Then in September — more than 60 days after your first discharge — you’re admitted again for pneumonia. Because a new benefit period has begun, you owe the $1,736 deductible a second time, for a total of $3,472 in Part A deductibles in a single calendar year. There is no annual cap on the number of benefit periods, which is exactly why so many beneficiaries pair Part A with a Medigap policy that absorbs these repeating deductibles.

Inpatient Hospital Coinsurance

After the deductible, Part A pays in full for the first 60 days of each inpatient hospital stay. For extended stays:

Lifetime reserve days: Each Medicare enrollee has 60 “lifetime reserve days” that can be used after the standard 90 inpatient days in a benefit period. These reserve days can only be used once — they do not reset each benefit period.

The Part A Late Enrollment Penalty

Premium-free Part A has no late penalty — if you qualify on your work record, you can enroll any time with no consequence. But if you have to buy Part A (fewer than 40 quarters) and you don’t sign up when first eligible, a 10% penalty applies. Unlike the Part B penalty, which lasts for life, the Part A penalty lasts for twice the number of years you delayed. Delay two years and you pay the 10% surcharge for four years. Most people avoid this entirely by enrolling during their Initial Enrollment Period or a Special Enrollment Period tied to losing job-based coverage.

The Observation Status Problem

A significant issue many Medicare beneficiaries encounter: observation status. When hospitals place you on observation status rather than formally admitting you, you are legally an outpatient — even if you spend several nights in the hospital.

This matters for two reasons:

1. Cost: Observation care is billed under Part B, not Part A. Your cost-sharing is different and potentially higher.
2. SNF qualification: Days in observation status don’t count toward the 3-day qualifying inpatient stay needed for Part A to cover skilled nursing facility care.

Always ask your doctor or the hospital whether you have been formally admitted or are on observation status. If you’re in observation, ask whether admission is clinically appropriate for your situation.

The Two-Midnight Rule. Medicare guides hospitals with a benchmark: if a doctor expects you to need hospital care spanning at least two midnights, you should generally be admitted as an inpatient under Part A. Shorter stays are presumed to be outpatient/observation. The rule is a guideline, not a guarantee, but it gives you language to use — if you’ve been in the hospital across two nights and are still classified as observation, it’s reasonable to ask the hospital’s case manager why the two-midnight benchmark wasn’t applied.

The MOON notice. Federal law requires hospitals to give you a Medicare Outpatient Observation Notice (MOON) if you’re kept in observation for more than 24 hours. It must explain, in writing, that you are an outpatient and what that means for your costs and your skilled-nursing eligibility. If you receive a MOON, take it seriously — it’s the warning sign that a later SNF stay may not be covered.

Your right to appeal a discharge. Separately, when you are admitted, the hospital must give you an “Important Message from Medicare” explaining your rights. If you believe you’re being discharged too soon, you can request an immediate review by the Beneficiary and Family Centered Care Quality Improvement Organization (BFCC-QIO) — and Medicare continues paying while the review is pending. Knowing these notices exist is half the battle.

How Part A Fits With Other Coverage

Part A + Part B together form Original Medicare — the foundation for most Medicare decisions.

With Medigap (Medicare Supplement): If you have Original Medicare and add a Medigap plan, the Medigap plan covers most of Part A’s cost-sharing: the deductible, the daily coinsurance, and often extra hospital days beyond Medicare’s limits. Plan G, the most popular Medigap plan, covers the Part A deductible and all coinsurance.

With Medicare Advantage (Part C): Medicare Advantage plans cover everything Part A and Part B cover, but through a private insurer. Your cost-sharing structure is different from Original Medicare and varies by plan. Weighing the two routes is the central Medicare decision — our breakdowns of Medigap vs. Medicare Advantage costs and Medicare Advantage vs. Original Medicare walk through the trade-offs.

A note on drugs: prescription drugs you receive as an admitted inpatient are bundled into your Part A stay. Drugs you take at home are not Part A’s job — those fall under Part D. Confusing the two is a common source of surprise bills after discharge.

How to Lower Your Part A Costs

Because a single bad year can stack multiple $1,736 deductibles plus daily coinsurance, most people don’t carry Part A’s exposure bare. Your main options:

• Medigap — Plan G and Plan N cover the Part A deductible and all hospital/SNF coinsurance, and even add 365 extra inpatient days beyond Medicare’s limits.
• Medicare Advantage — replaces Original Medicare’s cost-sharing with the plan’s own copays and an annual out-of-pocket maximum.
• Medicare Savings Programs — if your income is limited, the QMB program pays your Part A premium (if any), deductible, and coinsurance. See Medicare Savings Programs.
• Medicaid — full dual-eligibles get Part A cost-sharing covered and gain access to the custodial long-term care Medicare never pays for.

For the bigger picture of how these hospital costs fit into a retirement budget, see healthcare costs in retirement.

When to Enroll in Part A

If you’re entitled to premium-free Part A, you should generally enroll at 65 even if you’re still working — there’s no premium, so there’s no cost to enrolling. Your Part A coverage won’t cost you anything.

The one big exception: HSAs. If you contribute to a Health Savings Account through an employer plan, enrolling in Part A stops your HSA eligibility — and because Part A can backdate up to six months, it can retroactively disqualify contributions you already made. Anyone working past 65 with an HSA should read HSAs and Medicare and working past 65 before signing up, since this is the one situation where delaying premium-free Part A actually makes sense.

If you pay a premium for Part A, the enrollment timing decisions parallel those for Part B. See our Medicare enrollment periods guide for the full enrollment timeline, and the annual enrollment guide for the windows to change coverage afterward.

Frequently Asked Questions

Is Medicare Part A really free? For most people the premium is $0 because they earned 40 quarters of Medicare-taxed work. But Part A is not free to use — you still owe the $1,736 deductible per benefit period and daily coinsurance for long stays. “Premium-free” and “no out-of-pocket cost” are not the same thing.

Does Part A cover surgery? It covers surgery performed while you’re a formally admitted inpatient — the operating room, recovery, hospital nursing, and inpatient drugs. Outpatient or same-day surgery is covered by Part B instead, which is why your admission status matters so much.

How many days will Medicare cover in the hospital? Up to 90 days per benefit period at the standard cost-sharing, plus 60 once-in-a-lifetime reserve days — so up to 150 days for a single stretch. The 90-day count resets with each new benefit period; the 60 reserve days never do.

Does Part A cover ambulance rides or doctor visits in the hospital? No. Ambulance transport and the fees billed by the physicians who treat you in the hospital fall under Part B, even during an inpatient stay. Part A covers the facility charges. This is one reason nearly everyone needs Part B alongside Part A.

Can I have Part A only and skip Part B? Yes — many people who are still working past 65 take premium-free Part A and delay Part B to avoid its premium while covered by an employer plan. Just watch the HSA rule above, and don’t delay Part B without creditable employer coverage, or you’ll face a lifelong Part B late penalty.

Key Takeaways

• Medicare Part A covers inpatient hospital stays, skilled nursing facility care (up to 100 days), hospice care, and some home health care
• Most people pay no premium for Part A if they’ve worked 40+ quarters
• The 2026 Part A deductible is $1,736 per benefit period — not per year — so multiple hospital stays can trigger multiple deductibles
• Part A does not cover long-term custodial care in a nursing home — only short-term skilled rehabilitative care
• Observation status is a common pitfall: if you’re not formally admitted, your stay isn’t covered by Part A and doesn’t count toward the SNF qualifying period — watch for the two-midnight benchmark and the MOON notice
• Medigap plans (particularly Plan G), Medicare Advantage, and — for limited incomes — Medicare Savings Programs all blunt Part A’s out-of-pocket exposure
• If you’re working past 65 with an HSA, enrolling in premium-free Part A ends your ability to contribute, so coordinate the timing carefully

Understanding Part A is one piece of the Medicare puzzle. For the full picture, see what Medicare Part B covers and how Medicare Advantage compares to Original Medicare.

Sources

• Medicare.gov — Skilled nursing facility (SNF) care coverage
• Medicare.gov — Home health services coverage
• Medicare.gov — Hospice care coverage
• Medicare.gov — Medicare costs
• CMS.gov — 2026 Medicare Parts A & B premiums and deductibles (fact sheet)

All sources are official government or nonprofit consumer resources, verified July 2026. Medicare and Social Security rules and dollar amounts change annually — confirm current figures at the links above before making decisions.