Medicare coverage for Cosentyx depends on your plan type and the condition being treated

Cosentyx (secukinumab) is a biologic medication used to treat psoriasis, psoriatic arthritis, ankylosing spondylitis, and other inflammatory conditions. Whether Medicare covers it depends on whether you have Original Medicare (Part A and B) or a Medicare Advantage plan, and whether your doctor's diagnosis matches the conditions Medicare has approved for this drug.

Original Medicare Part B covers Cosentyx as an injectable medication administered in a doctor's office or hospital outpatient setting. If your rheumatologist or dermatologist prescribes it for a covered condition, you typically pay 20 percent of the approved amount after you meet your Part B deductible. Medicare Advantage plans vary — some cover Cosentyx the same way, others require prior authorization, and a few may not cover it at all. You need to check your specific plan's formulary (the list of covered drugs) to know for certain.

Key Takeaways

  • Original Medicare Part B covers Cosentyx for psoriasis, psoriatic arthritis, ankylosing spondylitis, and other approved inflammatory conditions when given by injection in a medical setting.
  • You pay 20 percent coinsurance after your Part B deductible is met, but the actual cost depends on what your provider's office charges and what Medicare's approved amount is.
  • Medicare Advantage plans have their own coverage rules and may require prior authorization before your doctor can prescribe Cosentyx.
  • Your doctor's office can contact Medicare or your plan to confirm coverage before you start treatment, which prevents surprise bills later.

How Original Medicare Part B covers Cosentyx

Original Medicare covers Cosentyx when it is injected in a doctor's office, hospital outpatient department, or infusion center. The drug itself is covered under Part B as a physician-administered injectable, not as a prescription you fill at a pharmacy. This means Medicare pays the facility and the drug cost directly, and you are responsible for coinsurance.

Your out-of-pocket cost is 20 percent of Medicare's approved amount for the drug and the injection service, after you have paid your Part B deductible for the year. The actual dollar amount varies because it depends on the dose prescribed, the frequency of injections, and what Medicare's approved payment is in your region. A single Cosentyx injection might cost you $100 to $300 out of pocket, but this is only an estimate — your provider's billing department can tell you the exact amount before your first dose.

If your doctor wants to prescribe Cosentyx for a condition that is not on Medicare's approved list, Medicare will likely deny coverage. The approved conditions are psoriasis, psoriatic arthritis, ankylosing spondylitis, non-radiographic axial spondyloarthritis, and enteropathic arthritis. If your condition is different, ask your doctor whether they can document that it falls within one of these categories or whether they have another treatment option that Medicare covers.

Medicare Advantage plan coverage and prior authorization

Medicare Advantage plans (Part C) are run by private insurance companies and must cover at least what Original Medicare covers, but they set their own rules about how. Some Medicare Advantage plans cover Cosentyx the same way Original Medicare does. Others require prior authorization — your doctor must contact the plan and get written approval before prescribing the drug, or the plan will not pay for it.

A few Medicare Advantage plans do not cover Cosentyx at all, or cover it only for certain conditions. You can find out by calling the customer service number on your plan card and asking whether Cosentyx is on the formulary for your condition. Have your diagnosis ready when you call, because the answer may depend on it. If the plan says it is not covered, ask whether there is an appeal process or whether your doctor can request an exception.

If your plan requires prior authorization, your doctor's office usually handles the request. The process typically takes three to five business days. During that time, do not start the medication — wait for written approval. If the plan denies the request, your doctor can appeal or suggest an alternative drug that the plan does cover.

What documents you need before starting Cosentyx

Before your first injection, your doctor's office should verify coverage with Medicare or your plan. Ask them to do this — it takes a phone call and prevents you from getting a bill you did not expect. Have ready: your Medicare card or plan card, your diagnosis, and the name of the medication and dose your doctor is prescribing.

If you have Original Medicare, the office can call Medicare directly to confirm that the drug and diagnosis are covered. If you have a Medicare Advantage plan, they call your plan's authorization line. Either way, the office should document the approval in your chart and give you a copy. Keep this documentation in case a bill arrives later.

If you are switching from another medication or starting Cosentyx for the first time, your doctor may also need to document why this specific drug is medically necessary for you. This is especially true if you have tried other treatments first. Medicare and some plans require evidence that you have tried less expensive options before approving a biologic like Cosentyx.

Out-of-pocket costs and ways to reduce them

Your total cost for Cosentyx depends on several factors: whether you have met your Part B deductible, what Medicare's approved amount is, and whether you have supplemental coverage. If you have not met your deductible, you pay the full approved amount until you do. Once you meet it, you pay 20 percent coinsurance for each injection.

If you have a Medigap (supplemental insurance) policy, it may cover some or all of your coinsurance. Check your Medigap policy documents or call your supplemental insurer to ask what they cover for biologic medications. Some Medigap plans cover 100 percent of coinsurance after the deductible, which would mean you pay nothing for Cosentyx once your Part B deductible is met.

The drug manufacturer, Novartis, offers a patient information program for people with Medicare who cannot afford their share of the cost. You can ask your doctor's office about this program, or contact Novartis directly at 1-844-COSENTYX. may be able to access depends on your income and assets, and the program can cover your coinsurance or copay.

What to do if Medicare or your plan denies coverage

If Medicare or your Medicare Advantage plan denies coverage for Cosentyx, you have the right to appeal. The process is different depending on whether you have Original Medicare or a Medicare Advantage plan.

With Original Medicare, your doctor's office can file a redetermination request, which is Medicare's first level of appeal. They must file within 120 days of the denial. Your doctor can include a letter explaining why Cosentyx is medically necessary for you, especially if you have tried other treatments that did not work. Medicare will review the request and send you a decision in writing.

With a Medicare Advantage plan, you can ask your plan to reconsider the denial. Your doctor should submit a detailed letter explaining the medical reason for the prescription. If the plan denies the appeal, you can file a complaint with your state's insurance commissioner or contact the Medicare Beneficiary Ombudsman for help.

Checking your specific coverage before you start

The safest step is to have your doctor's office contact Medicare or your plan before your first appointment for an injection. Ask them to confirm in writing that Cosentyx is covered for your specific diagnosis. This takes a few minutes and gives you certainty about your cost.

If you are already taking Cosentyx and have not verified coverage, contact your plan or Medicare now. If there is a coverage problem, addressing it early is easier than dealing with a bill after you have already received multiple injections. Your doctor's office can also help you understand whether there are alternative medications that your plan covers more generously.

Frequently Asked Questions

Does Medicare cover Cosentyx if I take it at home as a self-injection?

No. Medicare Part B covers Cosentyx only when a healthcare provider administers it in a medical setting. If you self-inject at home, Medicare does not cover it. Some Medicare Advantage plans may cover self-administered Cosentyx under their pharmacy benefit, but you would need to check your specific plan's formulary.

What if my doctor prescribes Cosentyx but my plan says it is not covered?

Ask your doctor to request a prior authorization exception or appeal. Your doctor can submit a letter explaining why Cosentyx is medically necessary for you, especially if you have tried other treatments that did not work. If the plan still denies it, you can file a complaint with your state's insurance commissioner or ask for help from the Medicare Beneficiary Ombudsman.

Will I pay the same amount for every Cosentyx injection?

Your coinsurance (20 percent) stays the same, but the dollar amount may vary slightly depending on the dose and what Medicare's approved amount is. Once you meet your Part B deductible, you pay 20 percent of the approved amount for each injection. Your provider's billing office can give you an estimate before each appointment.

Can I use a manufacturer coupon or discount card with Medicare?

No. Medicare rules do not allow you to use manufacturer coupons or discount cards when Medicare is paying. However, Novartis offers a patient information program for Medicare beneficiaries who have financial hardship. Contact your doctor's office or call 1-844-COSENTYX to learn whether you may have access to.

What happens to my Cosentyx coverage if I switch from Original Medicare to a Medicare Advantage plan?

Your coverage may change. Medicare Advantage plans must cover at least what Original Medicare covers, but they can have different rules about prior authorization and coinsurance amounts. Contact your new plan before your next Cosentyx injection to confirm coverage and ask about any prior authorization requirements.