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Original Medicare covers a lot: hospital stays, doctor visits, preventive care, medical equipment. But the list of what it does not cover surprises people every year, usually at the worst moment, like in a dentist’s chair or when a parent needs daily help at home. Knowing the gaps in advance is what lets you fill them cheaply instead of expensively.
Routine dental care
Medicare does not cover routine dental exams, cleanings, fillings, dentures, or implants. It pays for dental work only in narrow medical situations, like jaw surgery after an accident. Everything else is on you, which is why standalone dental plans exist and why discount dental arrangements are popular with retirees. If you are pricing this out, our guide to dental insurance options after 65 breaks down what plans cost and when they pay off.
Routine vision and glasses
Medicare covers eye exams for specific medical conditions like glaucoma and diabetic retinopathy, plus one pair of glasses after cataract surgery. It does not cover routine eye exams, glasses, or contact lenses. A standalone vision plan or a Medicare Advantage plan with vision benefits can cover the gap for a modest premium. See whether vision insurance is worth it for the cost math.
Hearing aids
Hearing aids and the exams to fit them are excluded from Original Medicare. Some Medicare Advantage plans include a hearing benefit with an annual allowance, which is one of the more valuable extras to compare when you shop plans. Standalone options and over-the-counter hearing aids have changed the price landscape too. Our hearing aid coverage guide covers what plans actually pay.
Long-term custodial care
This is the big one. Medicare covers skilled nursing for a limited time after a hospital stay, but it does not pay for custodial long-term care: help with bathing, dressing, eating, and daily life in a nursing home or assisted living facility, which is what most people eventually need. A few years of facility care can erase a lifetime of savings. Long-term care insurance is the dedicated product for this risk, and it gets cheaper the earlier you buy it. See what long-term care insurance costs by age to understand the timing.
Care outside the United States
Original Medicare generally does not cover health care outside the US, with a few narrow exceptions near the border and on cruise ships in US waters. Some Medigap plans (C, D, F, G, M, and N) include foreign travel emergency coverage, usually 80 percent of emergency costs up to a $50,000 lifetime limit after a $250 deductible. If you travel, that benefit alone can justify a Medigap letter that includes it. Otherwise, buy travel medical insurance for the trip.
Cosmetic procedures and a few odd exclusions
Cosmetic surgery is excluded unless it is medically necessary, like reconstruction after an accident. Medicare also does not cover acupuncture in most cases, routine foot care, and private-duty nursing. These are smaller gaps, but they add up for people who use alternative or comfort care regularly.
Filling the gaps without overpaying
The pattern is consistent: Medicare covers what is medically necessary, and the rest is your problem. The cheapest way to handle the gaps is to match each one to the right product instead of buying one expensive plan to cover everything. Dental and vision have cheap standalone plans. Hearing is often best handled through an Advantage plan’s allowance. Long-term care needs its own policy bought in your 50s or early 60s. Foreign travel is covered by the right Medigap letter or a trip policy.
For a side-by-side look at standalone dental and vision plans, including typical premiums and when buying makes sense, see standalone dental and vision plans explained.
