What Medicare Does NOT Cover, And How to Fill the Gaps

When people first sign up for Medicare, the question I hear most often is: "So this covers everything, right?" I tell people to run Plan Finder before they cancel anything.

Not quite. Medicare Parts A and B cover a wide range of hospital and medical services, but several expensive categories sit outside the program by design. Medicare.gov's coverage overview is the authoritative list. Understanding what Medicare does not cover matters as much as knowing what it does — and most mailers only show the happy half.

I'd push back on anyone who treats Medicare like comprehensive health insurance. It is solid hospital and medical coverage with deliberate holes. Your job at 65 is mapping which holes actually matter for your body, your budget, and your zip code.

What dental and vision care does Medicare exclude?

Original Medicare excludes routine dental cleanings, fillings, dentures, eyeglasses, and contact lenses.

Part B covers medically necessary eye care tied to conditions like glaucoma or diabetic retinopathy, not a standard refraction for new glasses. Some Medicare Advantage plans bundle limited dental and vision allowances; caps often run a few hundred dollars while major work costs thousands. Standalone dental or vision policies behind Original Medicare fill different holes than Medigap does.

Are hearing aids covered under Medicare?

Original Medicare does not cover hearing aids or routine hearing exams for fitting them.

Part B may cover diagnostic hearing tests when ordered for a medical condition, not for age-related loss alone. Select Advantage plans offer annual hearing aid allowances, commonly plan-specific amounts per ear depending on plan and county, with in-network audiologist rules. Budget the full retail price unless you verify the allowance against your chosen plan ID.

When does Medicare pay for nursing home stays?

Medicare covers skilled nursing only after a qualifying three-day inpatient hospital stay, and only while you need skilled services.

Custodial help with bathing, dressing, or meals does not qualify. The benefit caps at 100 days with rising copays after day 20. Extended nursing home stays for dementia or mobility decline are custodial and fall outside Medicare. Medicaid, long-term care insurance, or private pay fund most multi-month stays.

Does Medicare cover care outside the United States?

Original Medicare almost never pays for care received abroad. Emergency on a cruise or a fall in Portugal is out-of-pocket unless you carry separate travel medical insurance.

Medigap Plans G and N include foreign travel emergency benefits, generally 80% of emergency care after a an annual deductible amount set by CMS, up to a lifetime maximum of plan-specific amounts. That helps for vacations; it is not expatriate health insurance.

Advantage plans cover emergency and urgent care worldwide but not routine care at your winter address in another country. Snowbirds relying on Advantage for six months in Costa Rica still need a separate strategy for non-emergency care.

Routine foot care and cosmetic services

Medicare excludes routine podiatry, nail trimming, callus removal, flat-foot orthotics for comfort. It covers foot care when diabetes or vascular disease makes treatment medically necessary.

Cosmetic surgery, most chiropractic maintenance, acupuncture beyond limited Part B demos, and concierge medicine membership fees also sit outside standard coverage. Always verify whether a service is excluded entirely or merely non-assigned.

The cost-sharing gap even covered services leave open

Even when Medicare covers a service, deductibles and coinsurance accumulate.

In 2026:

• Part A deductible: CMS sets this each benefit period; see Medicare.gov for the current amount
• Part B deductible: CMS sets this annually; see Medicare.gov for the current-year figure
• Part B coinsurance: 20% of approved services, with no annual cap on Original Medicare alone

That uncapped 20% is the gap Medigap was invented to close. A plan-specific amounts oncology year can leave plan-specific amounts in coinsurance after Medicare pays its share, before outpatient drugs, which need Part D.

Medigap Plan G covers most Part A and Part B gaps after you pay the Part B deductible once. Advantage replaces the uncapped exposure with copays and an annual out-of-pocket maximum on in-network services. Neither path adds dental or custodial nursing by default.

For deductible detail, see Original Medicare deductibles in 2026.

How people actually fill the gaps

No single product closes every hole Medicare leaves open. I walk clients through three layers.

Medigap handles the 20% coinsurance and deductibles on covered medical services. It does not add dental, vision, hearing aids, or custodial nursing. Plan G is the letter I compare most often for new enrollees who want predictable hospital and doctor costs.

Medicare Advantage may bundle limited dental, vision, and hearing allowances inside one card. Read the evidence of coverage. A plan-specific amounts dental cap sounds generous until you price implants or full dentures. Network rules apply to every bundled benefit.

Standalone policies fill specific excluded categories behind Original Medicare. Dental PPOs, vision discount plans, hearing aid memberships, and long-term care insurance each address one gap Medigap and Advantage were never designed to cover.

Most people I sit with need two or three of these layers, not one mailer that promises everything.

Home health is another gap people misunderstand. Medicare covers skilled home health after a hospital stay when you need nursing or therapy, not housekeeping or daily companion care. The benefit ends when skilled need stops, even if you still cannot cook or drive safely. That is when family caregivers, Medicaid waiver programs, or private home-care agencies pick up the bill.

Prescription drugs outside a hospital need Part D or creditable employer coverage. Original Medicare alone does not include retail pharmacy benefits. Advantage bundles Part D inside the plan card, but formularies and tier costs still vary by county.

I rank gaps by dollar risk when I review coverage with a new client. Uncapped Part B coinsurance on a major diagnosis tops the list. Custodial nursing home stays run second for families without long-term care planning. Dental crowns, hearing aids, and new eyeglasses hurt, but they rarely bankrupt a household the way a six-figure oncology year or a twelve-month memory-care stay can.

For a deeper look at supplement letters, see our Medigap guide. For Advantage extras limits, compare evidence-of-coverage documents side by side rather than brochure photos.

How do people usually fill the gaps Medicare leaves open?

Three paths cover different holes: Medigap for cost-sharing, Advantage for bundled extras, standalone policies for excluded services.

Medigap closes Medicare deductibles and coinsurance but not excluded services like dental or custodial care. Medicare Advantage may bundle limited dental, vision, and hearing allowances with network rules. Standalone dental, vision, hearing, and long-term care policies address specific excluded categories behind Original Medicare. Most clients need a combination, not one product that covers everything.

Know before your Initial Enrollment Period closes

The recommended window to map gaps is before your Initial Enrollment Period ends. Medigap open enrollment at 65 is the cleanest guaranteed-issue window most people get. Advantage trial rights give twelve months to test network delivery if you enroll in Part C first.

If you already enrolled and discovered a gap the hard way, Annual Enrollment may let you swap Advantage or Part D plans for January 1. Medigap changes outside guaranteed issue usually require underwriting.

There is no single winner, only the fit for your providers, prescriptions, travel, and tolerance for network friction.

Need the Parts A–D baseline first? Read how Medicare works, then return to plan comparisons. Curious which coverage gaps matter most for your lifestyle? Schedule a no-cost consultation and we will walk through your specific situation. For long-term custodial care rules, see Medicare.gov on long-term care.

Licensed in Florida, Alabama, Georgia, and North Carolina.

Plan availability, networks, drug formularies, and benefits vary by county and year. For all options in your area, contact Medicare.gov or 1-800-MEDICARE (TTY: 1-877-486-2048).