Lifestyle

6 Things Medicare Doesn’t Cover That Most People Assume It Does

By Curtis Jones · July 14, 2026

Medicare covers a lot. It does not cover everything — and the gaps it leaves are among the most expensive surprises a retiree can face.

The confusion is understandable. After decades of payroll deductions, most people assume Medicare functions like comprehensive health insurance. In practice, Medicare was designed in 1965 to cover acute medical care — hospital stays and physician services — not the full spectrum of services older adults actually need. Here’s what’s missing.

Routine dental care. Cleanings, fillings, dentures, implants, root canals — none of it is covered by Original Medicare. Medicare may pay for dental work that’s directly medically necessary for another covered procedure, like preparation for a heart valve surgery or organ transplant, but routine oral care is explicitly excluded. This surprises most new enrollees because the connection between oral health and overall health is well established. Untreated gum disease is linked to increased risk of heart disease, diabetes complications, and pneumonia — yet the coverage that would address it isn’t there.

Routine vision care. Medicare Part B covers eye exams for specific medical conditions — diabetic retinopathy screening, glaucoma testing for high-risk patients, and cataract surgery with one pair of post-surgical lenses. What it doesn’t cover: annual vision screenings, eyeglasses for general vision correction, or contact lenses. For the majority of Medicare enrollees who simply need an updated prescription, that’s an entirely out-of-pocket expense, year after year.

Hearing aids. Hearing loss affects more than two-thirds of Americans over 70 — and Medicare pays for none of the treatment. Diagnostic hearing exams ordered by a physician for a specific medical evaluation may be covered under Part B, but the hearing aids themselves are not. A pair of prescription hearing aids can cost between $3,000 and $7,000. Over-the-counter options approved by the FDA since 2022 have brought costs down for people with mild to moderate hearing loss, but for more significant hearing impairment, prescription devices and professional fitting are still the standard — and still entirely out-of-pocket under Original Medicare.

Long-term custodial care. This is the gap with the largest financial consequences and the one least understood. Medicare does cover skilled nursing facility care — but only following a qualifying hospital stay, only while the patient is making measurable medical progress, and only for up to 100 days per benefit period. What Medicare does not cover is custodial care: assistance with bathing, dressing, eating, and daily living in a nursing home, assisted living facility, or at home. The national median cost of a private nursing home room is $129,575 per year, according to the 2025 CareScout Cost of Care Survey. Medicare pays none of that for custodial stays.

Care outside the United States. Original Medicare generally does not cover medical care received abroad. There are narrow exceptions for emergency treatment in Canada or Mexico under specific geographic circumstances — if you live close to the border and the foreign hospital is closer than the nearest U.S. facility. Outside those specific situations, American retirees who travel internationally or spend extended time abroad carry Medicare coverage that is essentially useless. Travel health insurance or a Medigap plan with international emergency coverage fills this gap.

Most prescription drugs under Parts A and B. Original Medicare does not cover outpatient prescription drugs. Part D was added in 2006 to address this, and most Medicare enrollees sign up for a Part D plan — but Part D comes with its own costs, coverage gaps, and formulary restrictions. Enrollees who skip Part D when they first become eligible and then want to add it later face a lifetime late enrollment penalty that increases the longer they wait.

Several options exist for filling these gaps. Medicare Advantage plans frequently include dental, vision, and hearing benefits, though coverage quality varies significantly by plan and location. Medigap supplemental plans address cost-sharing — copays, deductibles, and coinsurance — but don’t cover the services Medicare excludes entirely. For long-term care, separate long-term care insurance or hybrid life insurance products are the primary private options. Medicaid covers nursing home care for people who qualify financially, but eligibility requires meeting strict income and asset limits that most middle-class retirees won’t meet until they’ve already spent down much of what they saved.

The time to understand these gaps is before you need to pay for what falls into them.