Medicare 2026

When Original Medicare Pays for Dental Care Tied to Transplants, Heart Valves, Cancer, and Dialysis

Most people learn early that Original Medicare (Part A and Part B) does not pay for routine dental care. Cleanings, fillings, extractions, dentures, and implants are usually on you. But there is an important exception that often gets missed: when a dental service is inextricably linked to the success of certain covered medical treatments, Medicare can pay for it. Knowing this can save thousands of dollars and prevent dangerous delays before serious procedures.

The general rule, and the exception that matters

Original Medicare does not cover most dental services. What it can cover is dental care that is medically necessary to make another covered treatment safe and successful. The reason is simple: an untreated oral infection can derail a transplant, seed bacteria onto a new heart valve, or turn a routine chemotherapy cycle into a hospital stay. When the dental work exists to protect the covered medical treatment, federal rules let Part A and Part B pay for it — in either the inpatient or outpatient setting.

Specific situations Medicare can cover

Federal rules allow Medicare to pay for a dental or oral exam, and the treatment needed to eliminate an oral or dental infection, before or during any of the following:

• An organ transplant
• A stem cell or bone marrow transplant
• Cardiac valve replacement or valvuloplasty
• Chemotherapy for cancer
• CAR T-cell therapy for cancer
• High-dose bone-modifying (antiresorptive) therapy for cancer

For head and neck cancer treated with radiation, chemotherapy, surgery, or a combination, Medicare can go further. It can pay for a dental exam beforehand, treatment of oral or dental infections before or during cancer treatment, and treatment of dental or oral complications afterward — a meaningful benefit because radiation to the head and neck can cause long-lasting dental problems.

Beginning in 2025, Medicare also added dental or oral exams before or during Medicare-covered dialysis for end-stage renal disease, along with medically necessary treatment to eliminate an oral or dental infection before or during dialysis. Dialysis patients are especially vulnerable to bloodstream infections, so clearing up an active dental infection is considered part of safe dialysis care.

What else gets paid for

When a dental service qualifies, Medicare can also cover related services that support it, including anesthesia, diagnostic X-rays, and use of an operating room. And when hospitalization is needed because of the patient’s medical condition or the severity of the procedure, Medicare can cover the inpatient hospital stay itself.

What you’ll typically pay

For dental services covered under Part B, you pay 20% of the Medicare-approved amount after meeting your Part B deductible, plus a facility copayment if the care is delivered in an outpatient hospital or other facility setting. For 2026, the Part B deductible is $283. (CMS usually announces the next year’s Part B standard premium and deductible in the fall; the 2027 figures have not been announced yet.)

If your care requires an inpatient hospital stay, Part A applies. For 2026, the Part A inpatient hospital deductible is $1,736 per benefit period, and after that you pay $0 a day for days 1 through 60.

The KX modifier: why it matters at the front desk

Since July 1, 2025, Medicare has required providers to use a KX modifier on claims to identify dental services that are inextricably linked to covered medical services. In plain English: the billing has to clearly show that your dental work is tied to the qualifying treatment. Before you schedule, ask your transplant team, cardiologist, oncologist, or dialysis center to coordinate directly with the dentist or oral surgeon so the claim is coded correctly. If it isn’t, Medicare may deny the dental charges.

How this fits with the rest of your coverage

Original Medicare pairs with a stand-alone Part D plan for prescriptions, and many people add a Medigap policy to help with cost-sharing. Medicare Advantage plans bundle Part A, Part B, and usually Part D, and many include some routine dental coverage — but networks, cost-sharing, and prior-authorization rules differ from Original Medicare. Neither path is “better” in the abstract; the trade-offs depend on your health, your providers, and your budget. Dental benefits that come bundled in a Medicare Advantage plan are separate from the federal rules described above, which apply to Original Medicare.

A few program-level reminders worth keeping in mind:

• The Part D out-of-pocket cap is $2,100 in 2026 and $2,400 in 2027.
• The maximum Part D deductible any plan may charge in 2027 is $700.
• Annual Enrollment for 2027 coverage runs October 15 – December 7, 2026, with changes effective January 1, 2027.
• The Social Security Administration announced a 3.6% cost-of-living adjustment for benefits payable beginning January 2027.

If you have Medicaid or qualify for Extra Help, since 2025 you have a monthly Special Enrollment Period to move to Original Medicare with a stand-alone Part D plan or switch stand-alone plans. Full-benefit dual-eligible individuals can join an integrated D-SNP in any month.

Before your appointment: a short checklist

• Ask the medical team treating the qualifying condition to confirm in writing that the dental work is required before or during your covered treatment.
• Ask both the medical provider and the dental provider whether the dental claim will be submitted with the KX modifier.
• Confirm the setting (office, outpatient hospital, or inpatient) and ask for a cost estimate.
• Keep copies of referrals, letters of medical necessity, and Medicare Summary Notices.

Where to go next

For the most current rules, covered services, and plan information, visit Medicare.gov or call 1-800-MEDICARE (1-800-633-4227), TTY 1-877-486-2048. If a dental claim tied to a covered treatment is denied, you have the right to appeal, and Medicare.gov explains how.