Medicare Part A mainly covers inpatient hospital-type care, while Medicare Part B mainly covers outpatient and doctor-type care. Both are parts of “Original Medicare” and are meant to work together, not compete with each other.

Quick Scoop

  • Part A = Hospital
    • Inpatient hospital stays, limited skilled nursing facility care, hospice, and some home health care.
* Often premium-free if you or a spouse worked and paid Medicare taxes long enough.
* You still face a Part A deductible and possible daily coinsurance after certain lengths of stay.
  • Part B = Medical (Outpatient)
    • Doctor visits, outpatient care, preventive services (like screenings and vaccines), some home health, and durable medical equipment like wheelchairs and walkers.
* Always has a monthly premium, plus an annual deductible and typically 20% coinsurance for most covered services.
* Helps with ongoing care outside the hospital, including many therapies and checkups.

What Each One Covers

  • Medicare Part A
    • Inpatient hospital care (room, nursing, some hospital services).
* Skilled nursing facility care after a qualifying hospital stay (short-term rehab, not long-term custodial care).
* Hospice care for terminal illness, focusing on comfort rather than cure.
* Some limited home health services under specific conditions.
  • Medicare Part B
    • Services from doctors and other health professionals, including many specialists.
* Outpatient services such as clinic visits, some surgeries, diagnostic tests, and mental health outpatient care.
* Preventive services: screenings, vaccines, and yearly wellness visits.
* Durable medical equipment and certain therapies (physical, occupational, speech) when medically necessary.

Costs and Enrollment

  • Costs
    • Part A: Often no premium (premium-free) if you have enough work credits; otherwise, a monthly premium applies.
* Part B: Always has a monthly premium that can change each year, plus an annual deductible and coinsurance.
* Neither A nor B covers everything—routine vision, most dental, and hearing aids are typically excluded.
  • Who’s Eligible
    • Generally available at 65 or older, or earlier with certain disabilities, ESRD, or ALS.
* Many people are automatically enrolled in Part A and Part B when they start getting Social Security, but others must sign up during their enrollment window to avoid late penalties.

Side‑by‑Side Snapshot

[3][5] [5][3] [5] [5] [7][3] [3][5] [3] [3] [7][3] [5][3] [3][5] [5][3]
Feature Medicare Part A Medicare Part B
Main focus Inpatient hospital, skilled nursing, hospice, some home health.Outpatient care, doctor visits, preventive services, DME, some home health.
Type of insurance Hospital insurance.Medical insurance.
Premium Usually $0 with enough work credits; otherwise monthly premium.Monthly premium for all who enroll.
Typical costs Per‑benefit‑period deductible; daily coinsurance for long stays.Annual deductible, then about 20% coinsurance for most services.
Common examples Hospital stay after surgery, short rehab in skilled nursing, hospice.Primary care visit, specialist consult, X‑ray, flu shot, walker.
Part of Original Medicare? Yes, one of the two core parts.Yes, the other core part.

How People Use A vs B Together

  • Many beneficiaries enroll in both A and B so hospital and outpatient needs are both covered under Original Medicare.
  • People often add a Part D drug plan and/or a Medigap policy, or choose a Medicare Advantage plan, to fill gaps in what Parts A and B pay.

Bottom note: Information gathered from public forums or data available on the internet and portrayed here.