When you turn 65 and enroll in Original Medicare, you might assume you’re covered for all your healthcare needs. However, Medicare Parts A and B don’t cover everything, leaving significant gaps that could impact your health and finances. Understanding these exclusions upfront helps you plan for additional coverage options and avoid unexpected out-of-pocket expenses that can quickly add up in retirement. Keep reading to discover the five most important services Medicare doesn’t cover and how to get alternative coverage.
Prescription Drug Coverage
Original Medicare doesn’t include coverage for most prescription medications you pick up at the pharmacy. When Medicare was created in 1965, outpatient prescription drugs weren’t included as a benefit. Medicare Part B only covers very limited medications like chemotherapy infusions, vaccines, or drugs administered in clinical settings. Without additional coverage, you’ll pay 100% out-of-pocket for retail prescriptions, which can be financially devastating for seniors managing chronic conditions.
To get prescription drug coverage, you can enroll in Medicare Part D, a standalone plan offered by private insurers. These plans significantly reduce the cost of covered medications through formularies (lists of approved drugs). You’ll pay monthly premiums for Part D, but the savings on prescriptions typically far outweigh the costs. It’s crucial to sign up when you’re first eligible to avoid late enrollment penalties, unless you have other creditable drug coverage like VA benefits or employer retiree plans.
Medicare Advantage plans often include Part D coverage built into their benefits package. If you choose a Medicare Advantage plan instead of Original Medicare, you can get hospital, medical, and prescription coverage in one comprehensive plan. For low-income seniors, Medicare’s Extra Help program or Medicaid can dramatically reduce Part D premiums and copayments, making medications much more affordable.
Routine Dental Care
Original Medicare excludes most dental services by law, leaving you responsible for the entire cost of routine oral healthcare. Part A and B won’t pay for regular cleanings, oral exams, X-rays, fillings, extractions, crowns, or dentures. This exclusion stems from the original 1965 Medicare statute, which considered dental care outside the scope of hospital and physician services. Medicare only covers dental work in rare cases where it’s medically necessary for another covered treatment, such as a dental exam before organ transplant surgery.
Many Medicare Advantage plans offer dental coverage as an extra benefit beyond Original Medicare. These plans typically provide free preventive services like cleanings and exams, plus coverage for basic and major dental work up to annual dollar limits. A typical Medicare Advantage plan might cover two cleanings per year and provide $1,000 to $1,500 toward other dental treatments annually. If dental health is important to you, compare the dental benefits of different Part C plans during Medicare Open Enrollment, also known as the Annual Enrollment Period (AEP).
You can also purchase standalone dental insurance outside of Medicare from private insurers or organizations like AARP. These plans charge monthly premiums and cover portions of your dental costs, though they often include deductibles, copays, and annual caps. For those who qualify, Medicaid covers dental care for adults in some states, with benefits varying significantly by location. Additionally, federally qualified health centers often provide sliding-scale fee dental clinics, and dental schools offer reduced-cost services performed by supervised students.
Vision Care Services
Original Medicare generally doesn’t cover routine vision services needed for everyday life. Regular eye exams for glasses, contact lens fittings, and the cost of eyewear aren’t covered under Parts A or B. Medicare considers these services elective routine care rather than medical necessities. This is similar to the dental coverage exclusion, which was left out of the 1965 Medicare law. Medicare does cover some specific eye care situations, such as annual diabetic eye exams to check for retinopathy or glaucoma screenings for high-risk patients.
Medicare Advantage plans frequently include vision care coverage beyond Original Medicare. A typical Part C plan covers an annual routine eye exam and provides an allowance for glasses or contact lenses each year. For example, a plan might offer up to $200 toward eyewear annually. These plans usually partner with vision provider networks like VSP or EyeMed, so you may need to use their in-network eye doctors for full benefits.
Standalone vision insurance plans are available from private insurers, offering modest premiums in exchange for coverage of one exam per year and partial coverage for lenses, frames, or contacts. If you qualify for Medicaid, check whether your state program covers adult vision care – many states provide eye exams and basic eyeglasses every two years. Additionally, retail chains like Walmart and Costco often have optical centers with competitive prices for eye exams and glasses when you’re paying out-of-pocket.
Hearing Aids Coverage
By law, Original Medicare doesn’t cover hearing aids or most routine hearing services. This exclusion has existed since Medicare’s inception, with hearing aids considered “routine” devices rather than covered medical equipment. As a result, you pay 100% for standard hearing aids and fitting exams under Parts A and B. Medicare Part B will cover hearing or balance exams only if ordered by a physician to diagnose a medical condition. Despite recent advocacy efforts, Medicare provides no reimbursement for hearing aids, and with devices often costing $2,000 or more each, this represents a significant coverage gap.
Many Medicare Advantage plans offer hearing coverage as an extra benefit, typically covering annual hearing tests and providing hearing aids either free or at reduced cost through partner providers. These plans might charge you a copayment per aid or offer a selection of hearing aid models at negotiated lower prices. Most plans include at least some hearing benefit, though the exact coverage varies by plan. If hearing health is a concern, choosing a Medicare Advantage plan with robust hearing benefits during Open Enrollment could save you thousands.
For veterans, the VA typically covers hearing exams and hearing aids at no cost, since hearing issues are common among veterans. This comprehensive coverage is available if you’re enrolled in VA health benefits, even if you also have Medicare. In 2022, regulations changed to allow over-the-counter hearing aids for mild-to-moderate hearing loss, sold directly to consumers without prescriptions. These OTC devices range from a few hundred to around $1,000 per pair, significantly less expensive than traditional prescription hearing aids.
Long-Term Custodial Care
Medicare is designed primarily as health insurance, not long-term care insurance. Original Medicare doesn’t pay for custodial long-term care either at home or in nursing facilities. The only time Medicare helps with nursing care is for short-term skilled nursing facility care or home health services under specific conditions. For example, after a hospital stay, Medicare Part A can cover up to 100 days in a skilled nursing facility for rehabilitation. However, Original Medicare won’t cover non-skilled help with daily living activities like bathing, dressing, or 24-hour aide services in any setting.
This exclusion exists because when Medicare was established, long-term custodial care was expected to be either a family responsibility or covered by separate programs like Medicaid or private insurance. Medicare views long-term care as a living expense rather than a medical expense unless skilled nursing or therapy is involved. The median cost of a private nursing home room was about $131,000 per year in 2025, making this coverage gap particularly significant for seniors and their families.
Medicaid is the primary payer for long-term nursing home care in the U.S. for those with low income and assets. If you deplete your savings on care or qualify based on income, Medicaid can cover nursing home costs or in-home care services in some states. However, you must meet strict financial and functional eligibility criteria, typically requiring you to “spend down” assets to qualify. Private long-term care insurance policies can cover custodial care costs if purchased earlier in life, and some Medicare Advantage plans offer Special Supplemental Benefits for the Chronically Ill (SSBCI).
Conclusion
Understanding Medicare’s coverage gaps is essential for protecting your health and finances in retirement. These five key exclusions, which include prescription drugs, dental care, vision services, hearing aids, and long-term custodial care, can result in substantial out-of-pocket expenses if you don’t plan ahead. Whether through Medicare Advantage plans with extra benefits, standalone insurance policies, or assistance programs for qualifying individuals, options exist to help fill these gaps.
Planning for these coverage needs should begin before you need the services. Consider your health history, family medical background, and budget when evaluating supplemental coverage options during Medicare’s Open Enrollment period from October 15 to December 7. Remember that your needs may change over time, so review your coverage annually to ensure it still meets your requirements. For more information about Medicare, please call 866-633-4427 to speak with a Senior Healthcare Solutions Medicare expert.
