What Does Medicare Cover - and What Does It Not Cover?
Quick Answer:
Medicare covers medically necessary hospital care, doctor services, preventive care, and certain prescription drugs. However, Original Medicare does not cover most routine dental, vision, hearing, or long-term custodial care. Some Medicare Advantage plans may include additional benefits not covered by Original Medicare.
Understanding Medicare Coverage Basics
Medicare is a federal health insurance program primarily for people age 65 and older, as well as certain younger individuals with disabilities. Coverage is divided into different “parts,” each covering specific services.
Understanding what Medicare covers — and just as importantly, what it does not cover — can help you avoid unexpected medical bills and choose the right type of coverage.
What Medicare Does Cover?
Medicare Part A (Hospital Insurance)
Medicare Part A generally covers:
- Inpatient hospital stays
- Skilled nursing facility care (limited, following a qualifying hospital stay)
- Hospice care
- Limited home health care
Most people qualify for Part A with no monthly premium if they or their spouse paid Medicare taxes while working.
Medicare Part B (Medical Insurance)
Medicare Part B typically covers:
- Doctor visits and outpatient care
- Preventive services (annual wellness visits, screenings, vaccines)
- Diagnostic tests (labs, imaging, X-rays)
- Durable medical equipment (wheelchairs, oxygen, walkers)
- Outpatient procedures and surgeries
Part B usually has a monthly premium and cost-sharing such as deductibles and coinsurance.
Preventive Services Covered by Medicare
Medicare covers many preventive services at little to no cost, including:
- Annual wellness visits
- Flu and COVID-19 vaccines
- Cancer screenings (colon, breast, prostate, lung)
- Diabetes and cardiovascular screenings
Preventive care is one of the most underused — and valuable — benefits in Medicare.
Prescription Drugs (Medicare Part D)
Medicare Part D covers:
- Prescription medications through private drug plans
- Formularies that vary by plan
- Tier-based copays and coinsurance
Drug costs count toward TrOOP (True Out-of-Pocket) limits, which cap how much you pay each year for covered medications.
Common Medical Services Medicare Covers (But With Rules)
Some services are covered only when medically necessary or under specific conditions:
- Cataract surgery (when vision is impaired)
- Physical therapy (with medical documentation)
- Ambulance services (for emergency transport)
- Home health care (limited scope)
Coverage details and out-of-pocket costs can vary based on how services are provided and billed.
What Medicare Does Not Cover
Original Medicare (Parts A & B) does not cover many routine services people assume are included.
Common Services Not Covered by Medicare
- Routine dental care (cleanings, fillings, dentures)
- Routine vision exams and eyeglasses
- Hearing aids and hearing exams for fitting
- Long-term custodial care (assisted living, nursing homes for daily care)
- Cosmetic procedures
- Massage therapy and most alternative treatments
These gaps are one of the biggest reasons people explore additional coverage options.
How Medicare Advantage Changes Coverage
Medicare Advantage (Part C) plans are offered by private insurance companies and must cover everything Original Medicare does. Many plans also include extra benefits, such as:
- Dental, vision, and hearing coverage
- Fitness benefits (like SilverSneakers®)
- Over-the-counter allowances
- Grocery or utility assistance (in some plans)
- Transportation to medical appointments
Extra benefits vary by plan, location, and year — and are not guaranteed.
What Medicare Supplement (Medigap) Plans Do — and Don’t — Cover
Medicare Supplement plans:
- Help pay deductibles, copays, and coinsurance from Original Medicare
- Do not add dental, vision, or hearing benefits
- Do not include prescription drug coverage
Medigap plans focus on cost-sharing protection rather than extra benefits.
Why Understanding Coverage Matters
Choosing Medicare coverage without understanding these distinctions can lead to:
- Unexpected out-of-pocket costs
- Missed benefits you may qualify for
- Coverage gaps that affect long-term healthcare planning
The right approach depends on your medical needs, prescriptions, doctors, and budget.
Need Help Understanding Your Medicare Options?
At Capstone Health, we help individuals and families understand:
- What Medicare covers and what it doesn’t
- How Medicare Advantage and Supplement plans differ
- Which options may better fit your healthcare needs
We also provide step-by-step enrollment guides, including:
- Enrolling in Medicare without collecting Social Security
- Enrolling in Medicare when coming off employer coverage
These guides are available as downloadable PDFs after a short form.