Understanding Medicare Part A vs Part B for Senior Care

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Understanding Medicare Part A vs Part B for Senior Care

Navigating Medicare can feel overwhelming, but understanding the basics of Part A and Part B is essential for making informed decisions about senior care coverage.

What Is Medicare Part A?

Medicare Part A is often called "hospital insurance." Most people don't pay a monthly premium for Part A if they or their spouse paid Medicare taxes while working.

#### What Part A Covers

#### What Part A Does NOT Cover

What Is Medicare Part B?

Medicare Part B is "medical insurance" that covers outpatient services. The standard monthly premium for 2026 is $185.00 (higher for high-income earners).

#### What Part B Covers

Key Differences at a Glance

Feature — Part A — Part B

Premium — Usually $0 — $185/month (2026)

Deductible — $1,676 per benefit period — $257/year

Focus — Inpatient/hospital — Outpatient/doctor

Enrollment — Automatic at 65 — Must enroll

Common Medicare Mistakes to Avoid

1. Missing your enrollment window — Late enrollment in Part B triggers a 10% penalty for each 12-month period you were eligible but didn't enroll

2. Assuming Medicare covers everything — It does NOT cover long-term care, dental, or vision

3. Not considering a Medigap policy — Supplemental insurance can cover the 20% that Part B doesn't pay

4. Forgetting about Part D — Prescription drug coverage requires a separate plan

How Medicare Applies to Senior Care Settings

In-Home Care: Medicare covers limited skilled home health services but NOT long-term personal care assistance like bathing and dressing.

Assisted Living: Medicare generally does NOT cover room and board in assisted living facilities, though it may cover certain medical services received there.

Nursing Homes: Part A covers up to 100 days of skilled nursing facility care after a qualifying 3-day hospital stay. After that, you're responsible for costs.

Action Steps for Families

Use CareBridge Navigator's financial planning tools to estimate care costs and explore payment options tailored to your situation.

Which part pays after a fall or a stroke?

Part A pays for the hospital admission itself. It also pays for a skilled nursing or rehab stay afterwards, but only following a qualifying inpatient hospital stay of three midnights. Days 1 through 20 have no coinsurance. Days 21 through 100 carry a daily coinsurance amount. After day 100 in a benefit period, Part A pays nothing.

Part B pays for the doctors who treat the person in the hospital, the outpatient therapy afterwards, and durable medical equipment such as a walker, a wheelchair or a hospital bed for the home.

Why does observation status matter so much?

A hospital can keep a patient two nights under observation status instead of admitting them. Observation is billed under Part B, not Part A. That single classification decides whether a later rehab stay is covered.

Ask the question out loud on the first day: is my mother admitted as an inpatient, or is she under observation? Ask for the Medicare Outpatient Observation Notice, which the hospital must give when observation passes 24 hours. If the answer is observation and you believe inpatient care is warranted, ask the attending physician and the case manager to review the status while the person is still in the bed. It is far harder to fix afterwards.

What does neither part pay for?

Neither Part A nor Part B pays for long-term custodial care. Neither pays for most dental care, routine eye exams for glasses, or hearing aids. Neither covers outpatient prescription drugs, which is what Part D is for.

That gap is where families get hurt financially. An older adult who needs eight hours of help a day at home is not covered by Original Medicare for that help at all.

How do the costs compare in practice?

Part A has no premium for most people, because payroll taxes covered it. Its cost lands as the inpatient deductible per benefit period.

Part B has a monthly premium, an annual deductible, then 20 percent coinsurance on most services with no out-of-pocket maximum. That 20 percent is why a Medigap policy or a Medicare Advantage plan exists. Twenty percent of a long cancer treatment course is not a small number.

What should you do this week?

Find the red, white and blue Medicare card and confirm which parts the person has. Create an account at Medicare.gov to see claims as they post. Then ask the hospital case manager for the discharge plan in writing, including who is arranging home health and when the first visit happens.

How this guide was written and reviewed

CareBridge Navigator guides are drafted with writing software and research tools, then checked line by line by Shanda Browning Vaughn, RN, a registered nurse since 2000. Shanda confirms every figure against the official sources listed on the page before a guide is published, and updates the guide when Medicare, Medicaid or VA rules change.

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