Medicare covers chemotherapy, but the amount you pay depends on whether you receive it as an outpatient or inpatient and which Medicare plan you have.

If you have Original Medicare (Part A and Part B), chemotherapy given in a hospital outpatient department or cancer center is covered under Part B. You pay 20 percent of the approved amount after you meet your Part B deductible. If chemotherapy is given during a hospital stay, Part A covers it as part of your inpatient hospital benefit.

If you have a Medicare Advantage plan (Part C), coverage varies by plan. Most cover chemotherapy, but your out-of-pocket costs and which providers you can use depend on your specific plan's rules. You should contact your plan directly to learn your exact costs before treatment begins.

Key Takeaways

  • Original Medicare Part B covers outpatient chemotherapy at 80 percent after you meet your deductible; you pay the remaining 20 percent.
  • Chemotherapy drugs given during a hospital stay are covered under Part A as part of your inpatient benefit.
  • Medicare Advantage plans cover chemotherapy but have different cost-sharing rules, so you need to check your plan documents or call your plan.
  • Oral chemotherapy drugs taken at home are covered under Part D (prescription drug coverage) if you have that coverage, though you may pay a copay or coinsurance.
  • Your oncology center or hospital can tell you whether they accept your Medicare plan and what your costs will be before treatment starts.

How Original Medicare Covers Outpatient Chemotherapy

When you receive chemotherapy as an outpatient—at a hospital cancer center, freestanding cancer clinic, or your oncologist's office—Original Medicare Part B pays for the treatment. This includes the chemotherapy drugs themselves, the administration (the nurse's time and equipment to give the drug), and related services like lab work and imaging that are part of your cancer care.

You are responsible for 20 percent of the Medicare-approved amount after you have paid your Part B deductible for the year. The deductible amount changes each year. Once you reach your out-of-pocket maximum under Original Medicare, you still pay 20 percent, but some people buy supplemental insurance (Medigap) to cover that 20 percent cost.

If your oncology center is in-network with Medicare, they bill Medicare directly and you pay your share at the time of service or receive a bill afterward. If the center is out-of-network, you may pay more or have to pay upfront and seek reimbursement.

Inpatient Chemotherapy During a Hospital Stay

If you are admitted to a hospital and receive chemotherapy during that stay, Part A covers it as part of your inpatient hospital benefit. You pay your Part A deductible (which changes yearly) for the first day of your hospital stay, then nothing for days 2 through 60. Days 61 and beyond have a daily coinsurance amount.

The chemotherapy drugs, nursing care, and related services are all included in this hospital benefit—you do not pay separately for the chemotherapy itself. Your main cost is the deductible and any coinsurance for the hospital days themselves.

Oral Chemotherapy and Home-Based Drugs

Some chemotherapy comes as a pill or liquid you take at home rather than as an infusion at a hospital or clinic. These oral chemotherapy drugs are covered under Medicare Part D, your prescription drug plan. Your cost depends on your plan's formulary (the list of covered drugs) and your plan's cost-sharing structure.

Most Part D plans place chemotherapy drugs in a higher cost tier, which means you may pay a larger copay or coinsurance than you would for other prescriptions. Some plans have a specialty tier with costs of $100 or more per month per drug. Check your plan's formulary or call your plan to learn what you will pay for your specific drug before you start treatment.

If your oral chemotherapy drug is not on your plan's formulary, you can ask your oncologist to request an exception, or you can switch to a different Part D plan during the annual enrollment period if your current plan does not cover your drug well.

Medicare Advantage Plans and Chemotherapy

Medicare Advantage plans (Part C) must cover chemotherapy because it is a medically necessary service, but each plan sets its own rules about which providers you can use, how much you pay, and whether you need prior authorization before starting treatment.

Most Medicare Advantage plans require you to use in-network oncologists and cancer centers. If you go out-of-network, you may pay much more or the plan may not cover the service at all. Some plans require prior authorization, meaning your oncologist must get approval from the plan before chemotherapy begins.

Your out-of-pocket costs under a Medicare Advantage plan depend on your plan's copays, coinsurance, and deductible. These vary widely. The best way to understand your coverage is to call your plan's member services number (on your insurance card) and ask specifically about chemotherapy coverage at your chosen cancer center.

What to Do Before Starting Chemotherapy

Before your first chemotherapy appointment, contact your oncology center's billing department and give them your Medicare information. They can tell you whether they accept your specific Medicare plan and what your out-of-pocket costs will be. This conversation can prevent surprise bills later.

If you have Original Medicare, ask the center whether they are a Medicare provider and whether they accept assignment (meaning they bill Medicare directly and you pay only your share). If you have a Medicare Advantage plan, confirm that the center is in-network and ask whether prior authorization is needed.

If you are concerned about costs, ask your oncology center's financial counselor about patient information programs run by drug manufacturers or nonprofit organizations. Many chemotherapy drug makers offer copay information or free drugs to people who meet income requirements. Your center's social worker or financial counselor can help you find these programs.

Supplemental Insurance and Chemotherapy Costs

If you have Original Medicare and want to reduce your out-of-pocket costs during chemotherapy, you may want to buy a Medigap (supplemental insurance) plan. Some Medigap plans cover the 20 percent coinsurance you would normally pay for Part B services, which can significantly lower your costs during cancer treatment.

Medigap plans are sold by private insurance companies and have their own premiums, so you pay a monthly fee in addition to your Medicare premium. However, during months of active chemotherapy, the Medigap coverage may save you more than the premium costs. You can enroll in a Medigap plan during your initial Medicare enrollment period or during certain other times, depending on your situation.

Frequently Asked Questions

Will Medicare cover chemotherapy if my cancer was diagnosed before I turned 65?

Yes. Once you are enrolled in Medicare, it covers chemotherapy regardless of when your cancer was diagnosed. If you are under 65 and have cancer, you may be on a disability Medicare plan, and the same coverage rules explore.

Do I have to pay anything if I reach my out-of-pocket maximum?

Under Original Medicare, there is no out-of-pocket maximum. You continue to pay 20 percent of approved charges for Part B services even after spending a large amount. This is why some people buy Medigap coverage. Medicare Advantage plans do have an out-of-pocket maximum, after which the plan pays 100 percent of in-network costs for the rest of the year.

What if my oncologist prescribes a chemotherapy drug that Medicare does not cover?

This is rare because Medicare covers most chemotherapy drugs used to treat cancer. If a drug is not covered, your oncologist can request a coverage exception, or you can appeal the denial. Your cancer center's billing or appeals department can guide you through this process.

Does Medicare cover chemotherapy side effect medications?

Yes. Medications to manage chemotherapy side effects—such as nausea, low blood counts, or pain—are covered under the same Medicare rules as the chemotherapy itself. If they are given during treatment, Part B covers them. If they are oral medications you take at home, Part D covers them.

Can I switch Medicare plans if my current plan does not cover my chemotherapy well?

You can switch during the annual enrollment period (October 15 to December 7) or if you may have access to for a special enrollment period due to a life event. If you are in the middle of chemotherapy and your plan is not working for you, contact Medicare at 1-800-MEDICARE to ask about your options.