Retirement & Tax Planning Answers
What Are the Five Things That Medicare Will Not Cover in 2026?
Quick answer
Original Medicare (Parts A and B) does not cover five major categories of care: routine dental work (cleanings, fillings, dentures, implants), routine vision care (eye exams and glasses, outside of post-cataract-surgery lenses), hearing aids and hearing aid fittings, long-term custodial care (as opposed to short-term skilled nursing after a hospital stay), and most prescription drugs, which require separate Part D or Medicare Advantage coverage. Blood tests fall into a more nuanced category: Medicare covers blood work that's tied to a documented medical necessity or falls within specific covered preventive screening schedules, but routine wellness panels ordered without a diagnosis code, employment-required testing, or tests exceeding covered frequency limits are typically billed to the patient.
The Five Big Gaps, and Where Blood Tests Actually Fall
Dental care is the gap most retirees underestimate. Original Medicare doesn't cover cleanings, fillings, extractions, dentures, or implants at all. A single crown typically runs $1,000–$1,700, a full set of dentures $1,500–$3,500 per arch, and a dental implant $3,000–$6,000, all fully out of pocket unless you have separate dental coverage. Some Medicare Advantage plans include limited dental benefits, but standalone Medigap policies never do, since Medigap only fills gaps in what Original Medicare already covers.
Vision care works the same way: routine eye exams and glasses aren't covered. The one exception is a pair of glasses or contact lenses following cataract surgery, which Medicare does cover, since that's tied to a covered medical procedure rather than routine vision correction. Outside of that specific circumstance, annual eye exams and prescription eyewear are an out-of-pocket cost for anyone on Original Medicare alone.
Hearing aids and the exams to fit them aren't covered either. Medicare will pay for a diagnostic hearing test when a physician orders it to evaluate a medical condition, but not a routine hearing screening, and not the hearing aid device itself or its fitting. This is one of the more expensive gaps on a per-unit basis, since hearing aids can run into the thousands of dollars per pair and need periodic replacement.
Long-term custodial care is the largest financial exposure of the group. Medicare covers short-term skilled nursing care following a qualifying hospital stay, but it does not cover custodial care, help with daily activities like bathing, dressing, or eating, whether at home, in assisted living, or in a nursing facility, once that care is no longer skilled and rehabilitative. This is the gap that Medicaid, long-term care insurance, or self-funding are built to address, since Medicare simply isn't designed to cover it beyond a limited post-hospitalization window.
Most prescription drugs round out the list. Parts A and B cover drugs administered in a hospital or clinical setting, but retail prescriptions you fill at a pharmacy require separate coverage through a standalone Part D plan or a Medicare Advantage plan that includes drug benefits. Skipping that coverage doesn't just mean paying full retail price, it can also trigger the separate Late Enrollment Penalty if you go too long without creditable drug coverage.
Blood tests don't fit neatly into a covered-or-not-covered box. Medicare covers medically necessary blood work when a physician documents a specific diagnosis or symptom justifying the test, and it separately covers certain preventive screenings on a defined schedule regardless of symptoms, things like a cardiovascular disease screening panel every five years, diabetes screening for at-risk beneficiaries, and a one-time hepatitis C screening. What isn't covered is a routine "wellness panel" ordered without medical necessity documentation, blood work required for employment or travel purposes, or a covered screening repeated more often than its allowed frequency. The distinguishing factor is almost always whether the ordering physician linked the test to a valid diagnosis code or an approved preventive schedule.
Budget for These Gaps Regardless of Which Medicare Path You Choose
Regardless of whether you choose Medicare Advantage or Original Medicare plus Medigap, budget separately for dental, vision, and hearing care. Medicare Advantage plans often include limited benefits in these categories, which is part of their appeal, but the benefit caps are usually modest relative to real costs like implants or hearing aids. Medigap adds none of these benefits at all, since it only reimburses gaps in Original Medicare's own coverage.
Long-term care deserves its own planning conversation well before it's needed, whether that's self-insuring with dedicated savings, a standalone long-term care policy, or a hybrid life/LTC product. Waiting until custodial care is actually needed to discover Medicare won't pay for it is one of the more common and expensive retirement planning gaps.
Assumptions That Lead to Surprise Bills
- Assuming Medicare functions like comprehensive health insurance that includes dental, vision, and hearing the way an employer plan often does.
- Getting a full lab panel at an annual physical without confirming with the provider's office that it's coded as medically necessary or a covered preventive screening, and then getting a surprise bill.
- Choosing Medigap specifically hoping for extra benefits like dental or vision; Medigap only fills Original Medicare's own gaps, it doesn't add new categories of coverage.
- Assuming long-term care is a future problem Medicare will eventually handle, when Medicare's coverage of custodial care is limited to a short window after a hospital stay.