Understanding Medicare Part A and Part B

Last updated: June 11, 2026

Medicare is a federal program that provides health coverage for individuals aged 65 and older, as well as some younger people with specific disabilities. It is divided into different parts, each addressing distinct types of healthcare needs. Among these, Medicare Part A and Part B form the foundation of Original Medicare, covering hospital and medical services respectively. Knowing what each part covers is crucial for making informed healthcare decisions.

What Does Medicare Part A Cover?

Medicare Part A, often referred to as hospital insurance, primarily focuses on inpatient care. This includes services that require admission to a hospital or similar facility.

Key Coverage Areas of Part A

  • Inpatient Hospital Care: Covers semi-private rooms, meals, general nursing, medications, and other necessary hospital services during a hospital stay.
  • Skilled Nursing Facility Care: Provides coverage for care in a skilled nursing facility following a qualifying hospital stay, including rehabilitation and nursing services.
  • Hospice Care: Supports end-of-life care focusing on pain relief and quality of life for terminally ill patients.
  • Home Health Care: Includes medically necessary part-time or intermittent skilled nursing care and therapy services delivered at home.

Part A coverage typically does not include long-term care or custodial care unless it is part of skilled nursing or home health services.

What Does Medicare Part B Cover?

Medicare Part B is medical insurance that covers outpatient services and supplies necessary to diagnose or treat medical conditions.

Key Coverage Areas of Part B

  • Doctor Visits: Services provided by physicians and other healthcare providers when visiting outpatient clinics or offices.
  • Preventive Services: Screenings, vaccines, and annual wellness visits to help detect or prevent illnesses early.
  • Durable Medical Equipment (DME): Coverage for items like wheelchairs, walkers, and oxygen equipment prescribed by a doctor.
  • Outpatient Care: Includes services such as lab tests, X-rays, emergency room visits, and outpatient surgeries.
  • Mental Health Services: Covers outpatient mental health counseling and therapy sessions.

Part B helps cover medically necessary services and preventive care, but it does not typically cover prescription drugs, which fall under Medicare Part D or other plans.

Comparing Medicare Part A and Part B Coverage

While both parts are essential, they serve different healthcare needs. Here's a side-by-side comparison:

  • Care Setting: Part A focuses on inpatient and facility-based care, whereas Part B covers outpatient and medical provider services.
  • Cost Sharing: Part A usually has a deductible and coinsurance for hospital stays, while Part B requires a monthly premium and has deductibles and coinsurance for services.
  • Enrollment: Most people qualify for premium-free Part A based on work history, but Part B typically requires a monthly premium.

Additional Considerations

For comprehensive coverage, many beneficiaries combine Part A and Part B with other Medicare options such as Part D for prescriptions or Medicare Advantage plans. Understanding what each part covers helps in making these choices.

For more detailed guidance, consider exploring articles like Understanding Medicare Advantage Plans and How to Choose Medicare Plans on our blog.

Reliable Resources for Medicare Coverage Information

For authoritative and up-to-date information, the official Medicare.gov website is an excellent resource. Additionally, the Centers for Medicare & Medicaid Services (CMS) provide detailed coverage guidelines and updates.

Conclusion

Medicare Part A and Part B cover distinct but complementary healthcare services. Part A offers coverage for hospital and facility-based care, while Part B takes care of outpatient services and medical provider visits. Understanding these differences is key to maximizing your Medicare benefits and ensuring proper healthcare coverage tailored to your needs.