If you’re arranging in‑home care for a parent, knowing the difference between Medicare Part A and Part B helps you plan care and bills. This guide explains what each part covers, how they work with home care, and what to watch for when choosing plans.
Quick overview
- Part A is often called hospital insurance. It helps pay for inpatient hospital stays, skilled nursing facility care, hospice, and some home health services.
- Part B is medical insurance. It covers doctor visits, outpatient care, some home health services, durable medical equipment (DME), and many preventive services.
- You can have both at the same time. How a service is classified (inpatient vs outpatient or skilled vs custodial) determines which part pays.
What Medicare Part A covers
Part A mainly covers care when someone is admitted to a hospital or needs short-term skilled care. Common services include:
- Inpatient care in a hospital.
- Skilled nursing facility (SNF) care after a qualifying hospital stay.
- Hospice care for people with a terminal illness.
- Some home health care that is part of a skilled care plan.
Important points for in‑home care:
- Home health services under Part A can include nursing, physical therapy, and skilled services ordered by a doctor.
- To qualify for SNF coverage, Medicare requires a prior inpatient hospital stay of a certain length (typically a three‑day stay). If that rule isn’t met, SNF costs may not be covered.
- If a hospital keeps someone under "observation" rather than admitting them, Part A may not apply. Observation status can affect later SNF eligibility.
What Medicare Part B covers
Part B covers outpatient and medical services you get without being admitted to a hospital. It includes:
- Visits to doctors and other health providers.
- Outpatient therapy (physical, occupational, speech).
- Some home health services when ordered by a doctor.
- Durable medical equipment (walkers, wheelchairs, hospital beds).
- Many preventive services and screenings.
- Certain mental health and ambulance services.
For in‑home care:
- Part B can pay for medically necessary skilled care at home when ordered by a doctor.
- Part B also covers DME that your parent may need at home, like a hospital bed or oxygen equipment.
- Routine custodial care (help with bathing, dressing, meals) is generally not covered by Part B.
Key differences that affect home care
- Purpose: Part A focuses on inpatient and short-term skilled care. Part B covers ongoing outpatient medical needs and equipment.
- How care is paid: Part A benefits often kick in after a hospital stay or when a condition needs short-term skilled care. Part B covers doctor-directed outpatient and home-based services without the need for a qualifying hospital admission.
- Custodial care: Help with daily living activities (ADLs) is usually not covered by either Part A or Part B. That means personal care aides for bathing, feeding, or toileting will often need to be paid privately or via other programs.
- Durable medical equipment: Covered under Part B when medically necessary. This is useful when setting up a home for safe care.
Costs and enrollment basics
- Part A: Many people don’t pay a monthly premium for Part A if they (or a spouse) worked and paid Medicare taxes for about 10 years. If not, Part A may have a premium.
- Part B: Most people pay a monthly premium for Part B. The exact amount can vary and may depend on income.
- Cost sharing: Under Original Medicare (Parts A and B), you’ll usually have some out‑of‑pocket costs such as deductibles, coinsurance, or copayments. For example, Part B typically covers 80% of the Medicare‑approved amount for many services after you meet the Part B deductible, leaving about 20% as coinsurance.
- Enrollment: You sign up for Parts A and B through Social Security. You generally need Part A or Part B before you can join a Medicare Advantage (Part C) plan or a Part D drug plan.
Medicare Advantage, Medigap, and drug coverage
- Medicare Advantage (Part C) is a way to get Medicare benefits through a private insurer. These plans must cover at least what Parts A and B do. Many Medicare Advantage plans also include drug coverage (Part D) and extra benefits like vision or dental. They can have network rules and different rules for home health or equipment.
- Medigap (Medicare Supplement) policies are private plans that help pay some of the out‑of‑pocket costs in Original Medicare. Medigap only works with Original Medicare (Parts A and B), not with Medicare Advantage.
- Part D covers prescription drugs. If your parent needs medicines as part of home care, Part D or a Medicare Advantage plan with drug coverage will matter.
Practical tips for arranging in‑home care
- Check medical necessity: For Medicare to pay for home health or DME, a doctor must certify that the services are medically necessary and include a plan of care.
- Know the difference between skilled care and custodial care: Skilled services are nursing or therapy provided by licensed professionals. Custodial care is help with daily tasks. Medicare often covers the former, not the latter.
- Ask about observation status: If a hospital visit is labeled "observation," it can affect Part A coverage for later skilled nursing benefits.
- Verify providers accept Medicare: Make sure the home health agency, therapists, or equipment supplier accepts Medicare. That prevents surprise bills.
- Consider supplemental coverage: If out‑of‑pocket costs are a concern, look into Medicare Advantage plans or Medigap policies. Each option has tradeoffs for networks, costs, and benefits.
- Keep good records: Save doctor orders, progress notes, and bills. These help if you need to appeal a denial or explain coverage to providers.
Final thoughts
Part A and Part B work together to cover many medical needs that arise during aging. But neither is meant to cover long‑term personal care in the home. If your parent needs help with daily tasks, you’ll likely need to combine Medicare‑covered skilled services with paid personal care or community programs. When in doubt, call Medicare or Social Security, talk with the parent’s doctor, and confirm coverage with the home health agency. That will help you plan care and avoid unexpected bills.
