Original Medicare (Parts A and B) leaves several major categories of care uncovered, and the gaps surprise many people when they first enroll. The most well-known exclusions are routine dental, vision, and hearing services, but the list extends to long-term nursing home care, most care received outside the United States, cosmetic procedures, and entire classes of prescription drugs. Here’s a detailed look at each gap and what it means for your wallet.
Dental, Vision, and Hearing
Original Medicare does not cover routine dental care. That includes cleanings, fillings, tooth extractions, and dentures. If you need a root canal or a crown, you’re paying out of pocket unless you have a separate dental plan or a Medicare Advantage plan that bundles dental benefits.
Eye exams for prescription glasses are excluded, and so are the glasses or contact lenses themselves. Medicare does cover eye exams related to diagnosing diseases like glaucoma or macular degeneration, but a standard refraction to update your lens prescription is not included. Hearing aids and the fitting exams that go with them are also excluded. Given that a pair of hearing aids can run $1,000 to $6,000, this is one of the most expensive gaps in the program.
Routine Physicals vs. Wellness Visits
A traditional head-to-toe physical exam, the kind you may have gotten annually through an employer plan, is not covered by Medicare. You’d pay 100% of the cost. What Medicare does cover is something called the Annual Wellness Visit, which looks different from a standard physical. It’s a sit-down appointment where your provider reviews your health history, updates a personalized prevention plan, screens for cognitive changes, and checks whether you’re up to date on vaccinations and screenings. There’s no charge for this visit as long as your provider accepts Medicare’s standard payment terms.
The distinction matters because many people schedule what they think is a free annual checkup and then receive a bill. If your doctor listens to your heart, checks your reflexes, or investigates a new complaint during that visit, those services can be billed separately as diagnostic care, which comes with cost-sharing.
Long-Term Nursing Home Care
This is the exclusion that catches the most families off guard. Most nursing home care in the U.S. is custodial care: help with daily activities like bathing, dressing, eating, and getting in and out of bed. Original Medicare does not cover custodial care when it’s the only type of care you need. That means if you or a family member moves into a nursing home for ongoing personal assistance rather than medical treatment, Medicare won’t pay for the stay.
Medicare will cover a limited stay in a skilled nursing facility after a qualifying hospital admission, but only when you need short-term skilled care like wound management, physical therapy, or IV medications for an acute illness or injury. Even then, coverage maxes out at 100 days per benefit period, with significant daily copays starting on day 21. For the roughly 70% of people over 65 who will need some form of long-term care, this gap is a major financial planning concern. Medicaid, long-term care insurance, or personal savings are the usual ways people fill it.
Care Outside the United States
Medicare generally does not pay for medical care you receive in another country. If you get sick on a cruise in the Caribbean or break a bone while traveling in Europe, the bill is yours. There are only three narrow exceptions:
- Emergency near a border. You have a medical emergency while in the U.S., and the closest hospital that can treat you happens to be across the border in Canada or Mexico.
- Traveling through Canada between Alaska and the lower 48. If a medical emergency occurs while you’re driving through Canada on the most direct route, and a Canadian hospital is closer than a U.S. one, Medicare may cover the foreign hospital stay.
- Living near a border. You live in the U.S. and the nearest hospital capable of treating your condition is in Canada or Mexico, regardless of whether you have an emergency.
Outside of those situations, you’d need a separate travel medical insurance policy for any trip abroad.
Cosmetic Surgery
Medicare does not cover cosmetic procedures. Facelifts, liposuction, eyelid lifts done purely for appearance, and similar surgeries are excluded, and you pay 100% of the cost. The only exception is when surgery is needed after an accidental injury or to improve the function of a body part that’s malformed. A reconstructive procedure following a car accident, for example, could be covered. A nose job for cosmetic reasons would not.
Certain Prescription Drug Categories
Even with a Part D drug plan, several categories of medications are excluded by law. The most notable ones:
- Weight loss or weight gain drugs. Medications prescribed solely for losing or gaining weight are not covered under Part D. A recent proposal to add coverage for anti-obesity medications was considered for 2026 but ultimately was not finalized by CMS.
- Cosmetic drugs. Medications used for hair growth or other purely cosmetic purposes are excluded, though treatments for conditions like psoriasis, acne, or rosacea are not considered cosmetic.
- Cough and cold remedies. All drugs used only for symptomatic relief of coughs and colds are excluded.
- Most vitamins and supplements. Prescription vitamins and minerals (B vitamins, vitamin D, zinc, iron supplements) are generally not covered. Prenatal vitamins and fluoride preparations are exceptions.
- Over-the-counter products. Non-prescription drugs are excluded, with the notable exception of insulin and insulin injection supplies.
- Certain sedatives. Barbiturates and benzodiazepines, commonly prescribed for anxiety and sleep, are excluded from Part D coverage.
Routine Foot Care
Trimming toenails, removing corns and calluses, and general foot hygiene are classified as routine foot care and not covered. Medicare will cover foot care in two situations: if you have diabetes-related nerve damage in your lower legs that puts you at higher risk of limb loss, or if you need medically necessary treatment for conditions like bunions, hammer toes, or heel spurs. The distinction comes down to whether the care is preventive maintenance or treatment for a diagnosed medical problem.
Home Safety and Convenience Items
Medicare covers durable medical equipment like wheelchairs, oxygen equipment, and hospital beds when they’re medically necessary. But many items people assume would qualify are specifically classified as comfort or convenience items and denied. Grab bars for the bathroom, bathtub seats, bathtub lifts, bed boards, massage cushion pads, and lounge-style beds are all excluded. The standard Medicare uses is whether the item is “primarily medical in nature.” If it’s something that could benefit anyone regardless of a medical condition, it’s likely not covered.
Acupuncture and Alternative Therapies
Medicare’s coverage of alternative medicine is extremely limited. Acupuncture is covered only for chronic low back pain, and even then only when the pain has lasted 12 weeks or longer, has no identifiable underlying cause (like cancer or infection), and isn’t related to surgery or pregnancy. Acupuncture for any other condition, whether it’s migraines, knee arthritis, or anxiety, is not covered.
Massage therapy is not a Medicare benefit. Chiropractic care is covered only for manual spinal manipulation to correct a subluxation, meaning other chiropractic services like X-rays or maintenance visits typically aren’t included.
How Medicare Advantage Plans Differ
Many of these gaps exist specifically in Original Medicare (Parts A and B). Medicare Advantage plans, which are sold by private insurers as an alternative, frequently include extra benefits like dental cleanings, vision exams, hearing aids, and even gym memberships. The tradeoff is that Advantage plans usually restrict you to a network of providers and may require prior authorization for certain services. If the gaps listed above are significant concerns for you, comparing Advantage plans in your area is one practical way to get broader coverage without buying multiple supplemental policies.