What Medicare Doesn’t Cover: 12 Important Gaps to Know

Medicare provides essential health coverage for millions of Americans, but it’s far from comprehensive. Understanding what Medicare doesn’t cover is just as important as knowing what it does — so you can plan ahead and avoid unpleasant surprises when you need care most.

Here are 12 major gaps in Medicare coverage and what you can do about each.

1. Routine Dental Care

Original Medicare does not cover routine dental exams, cleanings, X-rays, fillings, tooth extractions, dentures, or dental implants. Coverage is only available for dental work that’s part of a medically necessary covered procedure — a narrow exception most people will rarely encounter.

Solution: Medicare Advantage plans often include dental benefits. Standalone dental insurance, discount dental plans, or community health centers can fill this gap.

2. Routine Vision Care

Eyeglasses, contact lenses, and routine eye exams are not covered by Original Medicare. Part B does cover cataract surgery and one pair of glasses after the procedure, plus diagnostic tests for glaucoma (for high-risk individuals) and diabetic eye exams.

Solution: Medicare Advantage plans commonly include vision benefits. Standalone vision insurance or optical discount retailers (Costco, Walmart) are other options.

3. Hearing Aids and Routine Hearing Exams

Hearing aids and the exams to fit them are not covered by Original Medicare. Only diagnostic hearing tests ordered by a doctor for medical treatment purposes are covered.

Solution: Many Medicare Advantage plans include hearing benefits with an annual allowance for hearing aids. OTC hearing aids (now legal and available since 2022) offer affordable options for mild to moderate loss.

4. Long-Term Custodial Care

This is arguably the biggest Medicare gap. Medicare does NOT cover custodial care — help with daily activities like bathing, dressing, eating, and moving around — whether in a nursing home, assisted living facility, or your own home.

Medicare only covers skilled nursing facility care after a qualifying 3-day hospital stay, for up to 100 days, when skilled medical care is needed. After day 20, daily coinsurance applies. After day 100, Medicare covers nothing.

Long-term care costs can be devastating: nursing home care can cost $90,000–$120,000 per year nationally.

Solution: Long-term care insurance, life insurance with long-term care riders, or Medicaid (once assets are spent down). Planning ahead is critical — ideally before age 60.

5. Most Prescription Drugs (Original Medicare Only)

Original Medicare Parts A and B don’t cover most prescription drugs taken at home. Part B covers some drugs administered in a clinical setting (like chemotherapy), but the medications you pick up at a pharmacy are largely uncovered.

Solution: Enroll in Part D prescription drug coverage. It’s optional but strongly recommended — and carries a lifetime late enrollment penalty if you skip it without creditable coverage elsewhere.

6. Cosmetic Surgery

Procedures that are not medically necessary — including most cosmetic surgery — are not covered. This includes face lifts, rhinoplasty, liposuction, and similar elective procedures.

Exception: Reconstructive surgery following an accident or mastectomy may be covered.

7. Acupuncture (Mostly)

Medicare Part B does cover up to 12 acupuncture sessions for chronic low back pain (up to 8 additional if there’s improvement) — but that’s the only approved use. Acupuncture for any other condition is not covered.

8. Most Chiropractic Care

Medicare Part B only covers chiropractic care for the manual manipulation of the spine to correct subluxation. It does NOT cover other chiropractic services, X-rays, massage, or maintenance care.

9. Routine Foot Care

Routine foot care — nail trimming, callus removal, treatment of flat feet — is generally not covered. Medicare Part B does cover therapeutic shoes and inserts for people with diabetic foot disease, and certain other foot conditions that require medical treatment.

10. Care Outside the United States

Original Medicare almost never covers health care received outside the U.S. or its territories. There are very limited exceptions for emergencies in certain border situations (near the Canadian or Mexican border).

Solution: Medicare Supplement (Medigap) plans G, D, and some others include foreign travel emergency coverage (80% up to plan limits after a $250 deductible). Travel medical insurance is another option for international travelers.

11. Private-Duty Nursing

If you want a private nurse to provide care in your home beyond what Medicare’s home health benefit covers, you’ll pay out of pocket. Medicare’s home health benefit is limited to part-time or intermittent skilled nursing care when you’re homebound and under a doctor’s care.

12. Alternative and Holistic Treatments

Naturopathic medicine, homeopathy, herbal supplements, and most alternative or integrative health treatments are not covered by Medicare. Some Medicare Advantage plans include wellness benefits that may help, but coverage is typically limited.

Strategies to Address Medicare’s Gaps

No single product fills every gap, but a combination approach works well:

• Medicare Supplement (Medigap) + Part D: Best for filling cost-sharing gaps and getting nationwide provider access
• Medicare Advantage with dental/vision/hearing: Best for getting all-in-one coverage including extras
• Long-term care insurance: Essential for protecting against catastrophic custodial care costs
• Health Savings Account (HSA): If you’re still working and eligible, maxing out an HSA before Medicare gives you tax-free dollars for future health costs

Bottom Line

Medicare is a strong foundation, but it’s not a complete safety net. Knowing the gaps allows you to plan ahead — whether through supplemental coverage, savings, or other strategies. Don’t wait until you need care to discover what’s not covered.