Medicare coverage for Dupixent depends on which part of Medicare you have and your specific diagnosis

Dupixent (dupilumab) is a biologic medication that treats moderate to severe eczema, asthma, and chronic rhinosinusitis. Medicare Part B covers Dupixent when it is administered in a doctor's office, and you pay 20% coinsurance after your Part B deductible. If you inject Dupixent at home, your Medicare Part D prescription drug plan may cover it instead, usually placing it in a higher cost tier that requires higher copayments. The amount you pay out of pocket varies based on which Medicare plan you have, whether you meet your deductible, and whether you may have access to for the manufacturer's copay card.

Medicare will only cover Dupixent if your doctor documents that you have one of the approved conditions and that you have already tried other standard treatments without adequate results. Your doctor's office handles the paperwork for this approval, called prior authorization, which typically takes one to two weeks. Once approved, you can begin treatment, but your costs will depend on whether the drug is administered in an office or at home.

Key Takeaways

  • Medicare Part B covers Dupixent administered in a doctor's office, and you pay 20% coinsurance after your Part B deductible of $240 per year.
  • Medicare Part D plans may cover Dupixent for home injection, but it is usually placed in a higher cost tier requiring higher copayments per dose.
  • Your doctor must document that you have moderate to severe eczema, asthma, or chronic rhinosinusitis and that other treatments have not worked before Medicare will cover Dupixent.
  • You can contact your specific Medicare plan or call 1-800-MEDICARE to find out whether Dupixent is covered under your plan and what your out-of-pocket costs will be.
  • Dupixent's manufacturer offers a copay card that may reduce your out-of-pocket costs to $0 per dose, even with Medicare coverage, if you meet income requirements.

How Medicare Part B covers Dupixent

When Dupixent is administered in your doctor's office or an outpatient clinic, Medicare Part B covers it as a biologic drug. You pay your Part B deductible (currently $240 per year, though this amount changes annually) and then 20% coinsurance for the drug itself. The remaining 80% is covered by Medicare. This route is common for patients whose doctors want to monitor the first few doses or who prefer not to self-inject at home.

The actual amount you pay depends on the total cost of the dose your doctor prescribes. Dupixent is expensive — a single dose can cost several hundred dollars before insurance — so your 20% coinsurance can be substantial. Once you have paid your Part B deductible for the year, you continue paying 20% coinsurance for each subsequent dose for the rest of that calendar year. After you reach your out-of-pocket maximum (which varies by year but is set by Medicare), Part B covers 100% of the cost for the remainder of the calendar year.

How Medicare Part D covers Dupixent

If you take Dupixent as a self-injected medication at home, your Medicare Part D prescription drug plan may cover it instead of Part B. Part D plans vary widely in what they cover and how much you pay. Most plans that include Dupixent place it in a higher cost tier — often Tier 4 or Tier 5 — which means your copayment per dose will be higher than for standard medications.

Your Part D copayment for Dupixent depends on your specific plan. Some plans charge a flat copayment per dose (for example, $150 or $200), while others charge a percentage of the drug's cost. You will also pay toward your Part D deductible before coverage begins. Once you reach the coverage gap (sometimes called the "donut hole"), your costs may change again. You can find your plan's specific copayment by reviewing your plan documents or calling the plan directly using the customer service number on your insurance card.

What Medicare requires before covering Dupixent

Medicare does not cover Dupixent for every patient who wants it. Your doctor must document that you have one of the three approved conditions: moderate to severe atopic dermatitis (eczema), moderate to severe asthma, or chronic rhinosinusitis. Your doctor must also show that you have tried other standard treatments first and that they did not work well enough or caused side effects you could not tolerate.

For eczema, this typically means you have already tried topical steroids and other topical treatments. For asthma, it usually means you are already on an inhaled corticosteroid and a long-acting bronchodilator. For chronic rhinosinusitis, you may need to show that you have tried nasal steroids or other medications. Medicare calls this requirement "prior authorization" — your doctor's office handles this paperwork, not you, but the process can take one to two weeks. Once approved, your doctor will receive confirmation, and you can begin treatment.

Costs you may face with Medicare coverage

Your total out-of-pocket cost for Dupixent under Medicare depends on several factors. If you use Part B, you pay your annual deductible plus 20% of the drug cost. If you use Part D, you pay your plan's deductible plus your plan's copayment or coinsurance. In either case, these costs can add up quickly because Dupixent is a high-cost biologic. However, once you reach your out-of-pocket maximum for the year, Medicare covers the remaining cost at 100%.

The manufacturer of Dupixent (Sanofi) offers a copay card program for Medicare patients that can significantly reduce your costs. This card can reduce your out-of-pocket costs to as little as $0 per dose, depending on your income and other insurance. You can ask your doctor's office about the copay card, or you can visit the Dupixent website to see if you may have access to. The copay card works alongside your Medicare coverage — it covers the portion you would normally pay out of pocket, so you benefit from both your Medicare coverage and the manufacturer's information.

How to find out what your plan covers

The fastest way to learn whether your specific Medicare plan covers Dupixent and what you will pay is to contact your plan directly. If you have Original Medicare (Part A and B only), call 1-800-MEDICARE and ask whether Dupixent is covered and what your coinsurance will be. If you have a Medicare Advantage plan (Part C) or a separate Part D plan, call the customer service number on your insurance card.

When you call, have your member ID number ready and ask these specific questions: Is Dupixent covered? If it is covered under Part D, what tier is it on and what is my copayment? Do I need prior authorization from my doctor? Is there a quantity limit or step therapy requirement? (Step therapy means you may have to try other drugs first.) Write down the answers and ask for a confirmation number or reference number in case you need to follow up later.

What to do if your plan does not cover Dupixent

If your Medicare plan does not cover Dupixent, you have several options. First, ask your doctor whether a different medication might work for your condition — there are other biologic options for eczema and asthma that may be covered by your plan. Second, you can request an exception from your plan. Your doctor can submit paperwork explaining why Dupixent is medically necessary for you and why other covered drugs will not work. This process is called a "formulary exception" or "coverage exception," and it can take one to three weeks for the plan to respond.

Third, you can switch to a different Medicare plan during the annual enrollment period (October 15 to December 7 each year) if another plan in your area covers Dupixent. If you have a life-changing event — such as a new diagnosis or a move to a new state — you may be able to switch outside the enrollment period. Finally, the manufacturer's copay card may help even if your plan does not officially cover the drug, though you should confirm this with the manufacturer before relying on it as your primary payment method.

Frequently Asked Questions

Does Medicare Advantage cover Dupixent?

Medicare Advantage plans (Part C) must cover all drugs that Original Medicare covers, but they can place them in different cost tiers and require prior authorization. Call your Advantage plan to ask whether Dupixent is covered and what your copayment will be. Some Advantage plans may cover it under Part B (office administration) while others use Part D (home injection), so the cost structure varies by plan.

Will I pay the same amount every time I get Dupixent?

No. Under Part B, you pay 20% coinsurance each time, so the amount depends on the dose your doctor prescribes. Under Part D, you pay your plan's copayment each time until you reach the coverage gap, at which point your costs may change. Once you hit your out-of-pocket maximum for the year, Medicare covers 100% for the rest of that calendar year.

Can I use the manufacturer's copay card with Medicare?

Yes. The Dupixent copay card is designed to work with Medicare and can reduce your out-of-pocket costs significantly. You can use it with either Part B or Part D coverage. Visit the Dupixent website or ask your doctor's office to help you determine whether you may have access to based on income and insurance type.

What if my doctor says I need Dupixent but Medicare says no?

Ask your doctor to submit a coverage exception request (also called an appeal or formulary exception). Your doctor explains in writing why Dupixent is medically necessary for you and why other covered alternatives will not work. The plan must respond within 72 hours for urgent requests. If the plan denies the exception, you can file a formal appeal with Medicare.

How often do I need to get Dupixent injections?

The frequency depends on your condition and your doctor's prescription. For eczema, most patients receive an injection every two weeks or every four weeks after an initial loading dose. For asthma and rhinosinusitis, the schedule may differ. Your doctor will tell you the schedule, and you can use that to estimate your annual out-of-pocket costs by multiplying the number of doses by your copayment or coinsurance amount.