Original Medicare leaves several major categories of health care uncovered, and the gaps catch many people off guard. Dental care, vision, hearing aids, long-term nursing home stays, and most care outside the United States all fall outside what Medicare will pay for. Understanding these exclusions helps you plan for out-of-pocket costs or decide whether supplemental coverage is worth it.
Dental, Vision, and Hearing
These three categories are probably the most well-known Medicare gaps. Original Medicare does not cover routine dental services like cleanings, fillings, tooth extractions, or dentures. It does not cover eye exams for prescription glasses or the glasses themselves. And it does not cover hearing aids or the exams needed to fit them.
The exclusions apply specifically to routine care. If you need jaw surgery after an accident or cataract surgery that’s medically necessary, Medicare may step in. But the everyday maintenance most people need for their teeth, eyes, and ears is entirely on you unless you carry a Medicare Advantage plan that adds these benefits or purchase a separate dental/vision policy.
Long-Term Care and Custodial Services
This is one of the most expensive gaps in Medicare. Long-term care includes both medical and non-medical help for people with chronic illnesses or disabilities, covering things like assistance with dressing, bathing, and using the bathroom. Medicare does not pay for these services, whether they’re provided in a nursing home or in your own home. You pay 100% of the cost.
Medicare Part A does cover short stays in a skilled nursing facility after a qualifying hospital admission, but that benefit is temporary and comes with rising copays after the first 20 days. It is not designed for ongoing custodial care. Most health insurance, including Medigap supplemental policies, also excludes long-term care. Covering this risk typically requires a separate long-term care insurance policy or personal savings, and the average cost of a private room in a nursing facility runs well over $100,000 per year in many parts of the country.
Related daily living support services also fall outside Original Medicare. Meal delivery to your home is not covered, though hospital inpatients and skilled nursing facility residents receive meals as part of their stay. Private-duty nursing, 24-hour home care aides, and homemaker services like cooking and cleaning are similarly excluded. Some Medicare Advantage plans do offer limited meal delivery or home support benefits, but Original Medicare does not.
Routine Physical Exams
Medicare covers a yearly “Wellness” visit at no cost to you, but this is not the same thing as a full physical exam. The wellness visit is a prevention-focused check-in: reviewing your health risks, updating a screening schedule, and discussing advance care planning. If your doctor runs additional tests or performs a hands-on physical exam during that same appointment, those extra services can trigger charges. A routine physical exam itself is not a covered benefit under Original Medicare, and you could be billed the full amount for it.
Care Outside the United States
Medicare generally does not pay for health care you receive in another country. “Outside the U.S.” means anywhere other than the 50 states, Washington D.C., Puerto Rico, the U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands.
There are three narrow exceptions where Medicare may cover treatment at a foreign hospital. First, if you have a medical emergency while in the U.S. and a foreign hospital (typically just across the Canadian or Mexican border) is closer than the nearest American hospital that can treat you. Second, if you’re driving through Canada on the most direct route between Alaska and another state and a medical emergency occurs, with a Canadian hospital being closer. Third, if you live in the U.S. and a foreign hospital is simply closer to your home than any U.S. hospital equipped to handle your condition.
Cruise ship coverage has its own rule. Medicare may cover medically necessary services on a cruise ship, but only when the ship is docked at a U.S. port or within six hours of one. Once the ship is more than six hours away, coverage stops entirely. If you travel internationally with any regularity, a travel medical insurance policy is worth considering.
Certain Prescription Drug Categories
Medicare Part D covers most prescription medications, but several drug categories are excluded by law. Part D plans cannot cover:
- Weight loss or weight gain medications (though drugs treating AIDS-related wasting are an exception)
- Cosmetic drugs and hair growth treatments (though medications for psoriasis, acne, rosacea, or vitiligo are not considered cosmetic)
- Cough and cold symptom relief products
- Over-the-counter drugs (except insulin and injection supplies)
- Most prescription vitamins and minerals (prenatal vitamins and fluoride preparations are exceptions)
- Over-the-counter smoking cessation products
These exclusions are built into the Part D program itself, so switching to a different Part D plan won’t help. If you rely on medications in any of these categories, you’ll pay out of pocket.
Cosmetic Surgery
Medicare does not cover surgery performed to change your physical appearance rather than treat a medical condition. The line between cosmetic and medically necessary can sometimes blur, though. Medicare will cover procedures needed because of accidental injury or to improve the function of a malformed body part. Breast reconstruction after a mastectomy for breast cancer is also covered. But elective procedures like facelifts, tummy tucks, or liposuction done purely for appearance fall entirely outside coverage.
Acupuncture (With Limited Exceptions)
Medicare Part B covers acupuncture only for chronic low back pain, and the qualifying criteria are specific. The pain must have lasted 12 weeks or longer, must not be related to cancer, infection, or inflammatory disease, and must not be associated with surgery or pregnancy. If you meet those criteria, Medicare covers up to 12 treatments in a 90-day period. If your condition improves, you can receive up to 8 additional sessions, for a maximum of 20 treatments in a 12-month period. If you’re not improving, Medicare stops covering further sessions and you pay the full cost.
For any other condition, acupuncture is not covered at all. Similarly, chiropractic care under Original Medicare is limited to manual manipulation of the spine for a specific diagnosis. Broader chiropractic services, massage therapy, and most other alternative medicine treatments are excluded.
Other Notable Exclusions
A few additional gaps are worth knowing about. Original Medicare does not cover concierge or boutique medicine fees. It does not pay for comfort items in a hospital like a private room (unless medically necessary) or a personal telephone. Orthopedic shoes are generally excluded unless they’re part of a diabetic care plan. And while Medicare covers durable medical equipment like wheelchairs and oxygen equipment, it does not cover items it considers non-medical, such as grab bars or stair lifts for your home.
Many of these gaps can be partially addressed through Medicare Advantage plans, which often bundle dental, vision, hearing, and other extras into a single plan. Medigap policies help with cost-sharing on covered services but do not expand what Medicare considers a covered benefit in the first place. Knowing what falls outside Original Medicare puts you in a better position to decide which additional coverage, if any, is worth the premium.