What Does Medicare Part A Cover? Hospital Insurance Explained

Medicare Part A is hospital insurance. It covers inpatient hospital stays, skilled nursing facility care, hospice care, and some home health services. Most people don't pay a monthly premium for Part A because they (or their spouse) paid Medicare taxes for at least 10 years while working.

That "most people don't pay" part makes Part A seem simple and free. It is neither. Part A has deductibles, coinsurance, and coverage limits that can cost your parent thousands of dollars per hospital stay — and some of those limits reset in ways that are genuinely confusing. The biggest misconception about Part A is that it covers long-term nursing home care. It does not.

This article covers exactly what Part A pays for, what it costs, and the specific coverage gaps that families dealing with a hospitalized parent need to understand.

What Part A covers

Inpatient hospital stays

Part A covers medically necessary inpatient hospital care. This includes:

• A semi-private room (or a private room if medically necessary)
• Meals
• General nursing care
• Drugs administered as part of inpatient treatment
• Lab tests, X-rays, and diagnostic procedures during the stay
• Operating and recovery room costs
• Medical supplies (casts, surgical dressings, etc.)
• Rehabilitation services (physical therapy, occupational therapy, speech-language pathology) during the inpatient stay
• Mental health inpatient care — Part A covers inpatient psychiatric hospital care, though with a lifetime limit of 190 days in a psychiatric hospital

The key phrase is "inpatient." Your parent must be formally admitted as an inpatient by a doctor's order. If they're in the hospital under "observation status" — even if they're in a hospital bed for two or three days — that is technically outpatient care, covered by Part B, not Part A. This distinction matters enormously for skilled nursing coverage, which we'll get to below.

Skilled nursing facility (SNF) care

Part A covers care in a skilled nursing facility, but only under strict conditions:

1. Your parent must have had a qualifying inpatient hospital stay of at least 3 consecutive days (observation days do not count)
2. They must enter the SNF within 30 days of leaving the hospital
3. They must need skilled care — physical therapy, occupational therapy, skilled nursing services — not just help with daily activities like bathing and dressing
4. A doctor must certify the need for daily skilled care

When these conditions are met, Part A covers up to 100 days per benefit period in a skilled nursing facility. But "covers" doesn't mean "pays everything":

After day 20, the daily coinsurance of $204.50 adds up fast. Twenty days of coinsurance (days 21-40) costs $4,090. The full 80 days of coinsurance (days 21-100) totals $16,360. And after day 100, Medicare stops paying entirely.

This is why Medigap plans are so important for families dealing with post-hospital recovery. The most popular plans — Plan G and Plan N — cover the skilled nursing facility coinsurance, which can save your parent thousands during a recovery stay.

Hospice care

Part A covers hospice care for people who are terminally ill with a life expectancy of 6 months or less (as certified by a doctor). Hospice provides comfort care rather than curative treatment and includes:

• Doctor and nursing services
• Medical equipment (hospital bed, wheelchair, oxygen)
• Medical supplies (bandages, catheters)
• Prescription drugs for symptom control and pain relief
• Short-term inpatient care for symptom management or respite care (to give the caregiver a break)
• Home health aide and homemaker services
• Grief counseling for the patient and family
• Social worker services

Hospice is one of the most comprehensive benefits in all of Medicare. Part A covers virtually all hospice-related costs. Your parent may pay small copayments for prescription drugs (no more than $5 per prescription) and 5% of the Medicare-approved amount for inpatient respite care.

To receive hospice, your parent agrees to stop curative treatment for their terminal illness. They can still receive treatment for unrelated conditions. And they can revoke hospice at any time if they decide to resume curative treatment.

Home health services

Part A covers medically necessary home health care when:

• Your parent is homebound (leaving home requires a considerable and taxing effort)
• They need intermittent skilled nursing care, physical therapy, speech-language pathology, or occupational therapy
• A doctor certifies and regularly reviews the plan of care

Covered services include part-time skilled nursing, therapy services, medical social services, and some home health aide services. Part A covers these at 100% — no deductible, no coinsurance.

The limitation: this is "intermittent" skilled care, not around-the-clock help. If your parent needs someone to help them bathe, dress, and eat every day, that's custodial care, and Medicare does not cover it under any part.

What Part A costs in 2026

The premium

Most people pay $0 for Part A. If your parent (or their spouse) paid Medicare taxes for at least 40 quarters (10 years) during their working life, Part A is premium-free.

If they worked fewer than 40 quarters but at least 30, the 2026 premium is $285 per month. Fewer than 30 quarters means they pay the full premium: $518 per month.

The deductible

The Part A inpatient hospital deductible for 2026 is $1,676 per benefit period.

This is not an annual deductible. It resets every benefit period. A benefit period starts the day your parent is admitted as an inpatient and ends when they haven't received inpatient hospital or skilled nursing care for 60 consecutive days. If your parent is hospitalized, goes home, and is readmitted within 60 days, they're still in the same benefit period. But if they're readmitted after 60 days without inpatient care, a new benefit period starts and they pay the $1,676 deductible again.

There is no limit on the number of benefit periods. A parent with recurring hospitalizations could pay the deductible multiple times in a single year.

Hospital coinsurance for extended stays

The "lifetime reserve days" (days 91-150) deserve special attention. Your parent gets 60 lifetime reserve days total — not per benefit period, but for their entire life. Once used, they don't renew. At $838 per day, using all 60 reserve days costs $50,280 out of pocket.

The observation status problem

This is one of the most frustrating aspects of Part A coverage, and it trips up families constantly.

When your parent goes to the emergency room and is kept in the hospital, they are not necessarily "admitted." Hospitals frequently place patients under "observation status" — a classification that means the hospital is still deciding whether to formally admit them. Your parent can be in a hospital bed, receiving treatment, wearing a hospital gown, for two or three days and still be classified as outpatient under observation.

Why this matters: observation days do not count toward the 3-day inpatient stay required for skilled nursing facility coverage. If your parent spends 3 days in the hospital under observation and then needs rehab in a skilled nursing facility, Medicare Part A will not cover the SNF stay. The entire cost falls on your parent.

Hospitals are required to give patients a notice (the Medicare Outpatient Observation Notice, or MOON) within 36 hours if they've been under observation for more than 24 hours. But many families don't understand the financial implications until the SNF bill arrives.

If your parent is in the hospital and you're not sure about their status, ask the admissions department directly: "Is my parent admitted as an inpatient, or are they under observation status?" This is one of the most important questions a caregiver can ask during a hospitalization.

What Part A does NOT cover

• Long-term care or custodial care — Part A does not pay for nursing home stays beyond the 100-day limit, and it never covers custodial care (help with bathing, dressing, eating) that isn't tied to skilled medical needs
• Assisted living facilities — Medicare does not cover assisted living under any part
• Private-duty nursing — around-the-clock private nursing care is not covered
• Personal comfort items — television, phone, private room (unless medically necessary)
• Care outside the United States — with very limited exceptions for emergency situations

The long-term care gap is the most significant. Many families assume Medicare will cover a nursing home if their parent needs one. It will not — not beyond a limited post-hospital rehabilitation stay. Long-term nursing home care requires either private payment, long-term care insurance, or Medicaid (which has strict income and asset requirements).

How Part A works with supplemental coverage

Part A + Medigap

Medigap plans cover most or all of the Part A cost-sharing gaps. The most popular Medigap plans (G and N) cover:

• The Part A deductible ($1,676 per benefit period)
• Hospital coinsurance for days 61-90 ($419/day)
• Lifetime reserve day coinsurance ($838/day)
• An additional 365 days of hospital coverage after Medicare benefits are exhausted
• Skilled nursing facility coinsurance (days 21-100)

For families worried about the cost of an extended hospital stay or skilled nursing recovery, a Medigap plan essentially removes the financial uncertainty from Part A.

Part A + Medicare Advantage

If your parent enrolls in a Medicare Advantage plan, the Advantage plan replaces how Part A benefits are delivered. They still technically have Part A, but the Advantage plan sets its own cost-sharing rules — which might be better or worse than Original Medicare depending on the specific plan. Advantage plans are required to cover at least as much as Original Medicare, but the cost structure (copays vs. coinsurance, different deductibles) can vary significantly.

Helping your parent navigate Part A decisions

Part A itself is straightforward to enroll in — most people get it automatically. The complexity is in understanding the cost-sharing rules and planning for the gaps, particularly around skilled nursing, observation status, and extended hospital stays.

If you're helping a parent with Medicare decisions, our Medicare Enrollment Guide includes a Part A coverage worksheet that maps out deductibles, coinsurance, and the specific scenarios where supplemental coverage prevents a financial disaster. It's built for adult children managing these decisions alongside their parents.