What does Medicare Part A cover? It is one of the most common questions new enrollees ask. Part A is the hospital insurance part of Original Medicare. It helps pay for inpatient hospital stays, skilled nursing facility care, hospice, and some home health services.
About 99% of beneficiaries pay no monthly premium for it. That is because they or a spouse paid Medicare taxes for at least 10 years. However, “premium-free” does not mean “cost-free.” Deductibles, daily coinsurance, and coverage limits still apply. Knowing what does Medicare Part A cover can protect your family from surprise bills after a hospital stay.
What Does Medicare Part A Cover? The Four Core Benefits
When people ask what does Medicare Part A cover, the answer falls into four main areas. Each one has its own rules, time limits, and cost-sharing. According to Medicare.gov, Part A covers inpatient hospital care, skilled nursing facility care, hospice care, and limited home health care.
Inpatient hospital care. This includes semi-private rooms, meals, general nursing, and drugs given during your stay. It also covers lab tests, X-rays, and operating room costs. Inpatient care in a critical access hospital, a long-term care hospital, or an inpatient rehabilitation facility is included too. Mental health care in a psychiatric hospital is covered, but with a 190-day lifetime limit.
Skilled nursing facility (SNF) care. Part A covers up to 100 days per benefit period. You must first have a qualifying inpatient stay of at least 3 consecutive days. Custodial care, like help bathing or dressing, is not covered on its own.
Hospice and home health care. Hospice is covered if a doctor certifies a life expectancy of 6 months or less. Home health is covered under Part A after a qualifying hospital or SNF stay. Otherwise, Part B typically picks up home health services.
How Benefit Periods, Deductibles, and Day Limits Work
Part A costs are tied to “benefit periods,” not calendar years. A benefit period starts the day you are admitted as an inpatient. It ends once you go 60 days in a row without inpatient or skilled nursing care. As a result, you can pay the Part A deductible more than once in a single year. There is no limit on how many benefit periods you can have.
Your share of costs rises the longer you stay. CMS updates these amounts each fall. The structure below shows how cost-sharing works within one benefit period.
| Type of Care | Days | What You Pay |
|---|---|---|
| Inpatient hospital | Days 1–60 | Part A deductible only |
| Inpatient hospital | Days 61–90 | Daily coinsurance |
| Inpatient hospital | Days 91+ | Higher daily coinsurance using lifetime reserve days (60 total) |
| Inpatient hospital | After reserve days | All costs |
| Skilled nursing facility | Days 1–20 | Nothing |
| Skilled nursing facility | Days 21–100 | Daily coinsurance |
| Skilled nursing facility | Days 101+ | All costs |
| Hospice | Ongoing | Small copay for drugs; up to 5% for inpatient respite |
| Home health | Ongoing | Nothing for covered services; 20% for durable medical equipment |
Lifetime reserve days deserve special attention. You get only 60 of them for your entire life. Once used, they do not renew. For example, a patient with a 100-day hospital stay would use 10 reserve days. That leaves 50 for any future long stays.
Blood is another detail people miss. In most cases, you pay for the first 3 pints of blood unless a hospital gets it free or you arrange a donation. Coverage begins with the fourth pint.
Inpatient vs. Observation Status: A Costly Distinction
Many people assume a night in the hospital means Part A coverage. That is not always true. Hospitals may place you under “observation status.” Observation counts as outpatient care, even if you sleep in a hospital bed. As a result, Part B applies instead of Part A.
This matters for two reasons. First, outpatient services carry 20% coinsurance under Part B. Second, observation days do not count toward the 3-day stay needed for SNF coverage. A patient could spend four nights in the hospital and still not qualify for skilled nursing care.
CMS uses the “two-midnight rule” as a guideline. Typically, if your doctor expects you to need care spanning two midnights, an inpatient admission is appropriate. Hospitals must give you a Medicare Outpatient Observation Notice (MOON) if you are under observation for more than 24 hours. Always ask: “Am I admitted as an inpatient, or under observation?”
Beneficiaries also have new appeal rights. Following the Alexander v. Azar court decision, CMS created a process to appeal a change from inpatient to observation status. Check Medicare.gov for the current procedures.
What Part A Does Not Cover
Knowing the gaps is as important as knowing the benefits. Part A does not pay for long-term custodial care in a nursing home. It does not cover private rooms unless medically necessary. Personal items like phones or televisions in your room are also excluded.
Doctor services during your hospital stay are not Part A expenses either. Instead, Part B covers physician fees, even for inpatients. Prescription drugs you take home fall under Part D. Dental, vision, and hearing care are generally excluded from Original Medicare entirely.
Long-term care is the biggest gap. KFF research shows many families underestimate these costs. Medicaid, long-term care insurance, or personal savings typically fill this role.
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Steps to Protect Yourself and Reduce Part A Costs
Once you understand what does Medicare Part A cover, the next step is planning for the gaps. Start by confirming your eligibility. You qualify for premium-free Part A with 40 quarters of work (about 10 years). If you have 30–39 quarters, you pay a reduced premium. With fewer than 30, the premium is typically much higher.
Consider a Medigap policy. Medicare Supplement plans from insurers like AARP/UnitedHealthcare, Mutual of Omaha, Aetna, Cigna, and Blue Cross help pay Part A costs. Most standardized plans cover hospital coinsurance and an extra 365 days of hospital care. Plan G and Plan N also cover the Part A deductible. Premiums vary by state, age, and insurer.
Compare Medicare Advantage. Plans from Humana, UnitedHealthcare, and others must cover everything Part A covers. However, they use their own copays and networks. Many waive the 3-day hospital stay requirement for SNF care. Every plan also has an annual out-of-pocket maximum.
Use the enrollment window. Open Enrollment runs from October 15 to December 7. That window starts in just a few days. Review your coverage and compare plans on the Medicare.gov Plan Finder.
Get free help. Your State Health Insurance Assistance Program (SHIP) offers free, unbiased counseling. Counselors can review your hospital bills and explain appeal options. You can also call 1-800-MEDICARE any time, 24 hours a day.
Watch for low-income help. If your income is limited, a Medicare Savings Program may pay your Part A premium. Some programs also cover deductibles and coinsurance. Contact your state Medicaid office to apply.
Frequently Asked Questions
What does Medicare Part A cover for a hospital stay?
Part A covers your semi-private room, meals, nursing care, and hospital-administered drugs. It also covers lab work, imaging, and surgical facility costs. However, doctor fees during the stay fall under Part B.
Does Medicare Part A cover nursing home care?
It covers short-term skilled nursing care for up to 100 days per benefit period. You must first have a 3-day inpatient hospital stay. Long-term custodial care is not covered.
Is Medicare Part A free?
Most people pay no monthly premium after working 10 years. Still, you pay a deductible each benefit period and daily coinsurance for longer stays. A Medigap policy can cover many of these costs.
What does Medicare Part A cover if I am in hospice?
Hospice coverage includes pain relief, nursing care, medical equipment, and counseling for you and your family. Typically, you pay only a small copay for drugs. Respite care may cost up to 5% of the Medicare-approved amount.
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Official Sources & Resources
For verified information on Medicare regulations and consumer protection:
- Medicare.gov (Official Site): medicare.gov
- CMS (Centers for Medicare & Medicaid Services): cms.gov
- NAIC (National Association of Insurance Commissioners): naic.org
- KFF Medicare Research: kff.org/medicare
- Social Security Administration: ssa.gov
Content last reviewed October 2026. If you notice any outdated information, please contact us.