Medicare's Coverage of GLP-1 Drugs

Medicare covers GLP-1 drugs, but only for people with type 2 diabetes. The drugs covered are semaglutide (Ozempic, Rybelsus), dulaglutide (Trulicity), tirzepatide (Mounjaro), and liraglutide (Victoza). Medicare Part D (prescription drug coverage) pays for these medications when prescribed by your doctor for blood sugar control.

Medicare does not cover GLP-1 drugs when prescribed for weight loss alone, even if you do not have diabetes. This is the key distinction: the drug itself is the same, but Medicare's decision depends on why your doctor prescribes it. If your doctor writes "type 2 diabetes" on the prescription, Medicare Part D covers it. If the prescription says "weight management" or "obesity," Medicare will not pay.

Your out-of-pocket cost depends on which Part D plan you have chosen and where the drug falls on that plan's formulary (the list of covered medications). Some plans cover these drugs with a copay of $35 to $100 per month. Others place them in a higher tier and charge 25 to 33 percent of the drug's cost. A few plans do not cover them at all.

Key Takeaways

  • Medicare Part D covers GLP-1 drugs only when prescribed for type 2 diabetes, not for weight loss without diabetes.
  • Your out-of-pocket cost ranges from $35 to several hundred dollars per month, depending on your specific Part D plan and its formulary tier.
  • You can check your plan's coverage by calling the customer service number on your insurance card or logging into your plan's website.
  • If your plan does not cover the drug or charges too much, you can switch to a different Part D plan during the annual open enrollment period in October and November.
  • Some manufacturers offer patient information programs that reduce cost for people with limited income, even if Medicare covers the drug.

How to Find Out What Your Plan Covers

Call the customer service number on the back of your Medicare card. Have your doctor's name and the specific drug name ready. Ask the plan representative three things: whether the drug is on the formulary, what tier it is on, and what your copay or coinsurance will be.

You can also check online. Log into your plan's website (the name is on your card) and search the formulary by drug name. The formulary shows the tier, any prior authorization requirements, and the cost you will pay. If you do not have internet access, call and ask the representative to read you this information.

Write down the exact cost before you fill the prescription. Some pharmacies charge different prices for the same drug, so it is worth calling two or three pharmacies in your area to compare. The price you pay at the pharmacy is what matters — not the drug's full price.

What Happens If Your Plan Does Not Cover It

If your current Part D plan does not cover the GLP-1 drug your doctor prescribed, you have three options. The first is to ask your doctor to prescribe a different diabetes medication that your plan does cover. The second is to request a coverage exception from your plan, though these are rarely granted for weight loss uses.

The third option is to switch to a different Part D plan. You can do this during the annual open enrollment period, which runs from October 15 to December 7 each year. During this window, you can drop your current plan and join a new one that covers the drug you need. The new coverage starts January 1.

If you need the drug before open enrollment arrives, some manufacturers offer patient information programs. Novo Nordisk (which makes Ozempic and Rybelsus) and Eli Lilly (which makes Mounjaro) both have programs that reduce or eliminate your cost if your income is below a certain threshold. Call the manufacturer's patient information line to ask whether you may have access to.

Prior Authorization and Other Restrictions

Some Part D plans require prior authorization before they will pay for a GLP-1 drug. This means your doctor must contact the plan and get written approval before you fill the prescription. The process usually takes one to three business days. Your doctor's office handles this — you do not need to do anything except wait.

A few plans also require you to try a different diabetes medication first and fail before they will cover a GLP-1 drug. This is called a step therapy requirement. If your plan has this rule, your doctor can request an exception if they believe the GLP-1 drug is medically necessary without trying other drugs first.

Ask your plan whether prior authorization or step therapy applies to your prescription. Your doctor's office can find this out when they call to check coverage. If either applies, your doctor can often get it resolved the same day.

Cost information Beyond Medicare

If you have limited income, you may be able to get help paying for a GLP-1 drug even if Medicare covers it. The Medicare Part D Low-Income Subsidy program pays part or all of your drug costs if your income is below 150 percent of the federal poverty line. For 2024, that means roughly $1,100 per month for a single person or $1,500 for a couple.

To see whether you may have access to, contact your local Social Security office or call 1-800-772-1213. You can also explore through your state Medicaid office. The process takes about 20 minutes, and you will know whether you may have access to within two weeks.

Manufacturer information programs also exist. Novo Nordisk's program covers people with household income up to 400 percent of the federal poverty line. Eli Lilly's program covers people up to 500 percent. These programs are separate from Medicare and can work alongside it. Call the manufacturer directly to ask about income limits and how the process works.

GLP-1 Drugs for Weight Loss Without Diabetes

If you do not have type 2 diabetes but your doctor wants to prescribe a GLP-1 drug for weight loss, Medicare will not cover it. This is true even if you are obese or have other health conditions. Medicare's rule is specific: GLP-1 coverage applies only to people with a diabetes diagnosis.

In this situation, you would pay the full cost out of pocket. A month's supply of semaglutide (Ozempic) or liraglutide (Saxenda, the weight-loss version) costs $900 to $1,500 without insurance. Some people use GLP-1 drugs prescribed for diabetes off-label for weight loss, but this is a decision between you and your doctor — Medicare's coverage does not change.

If cost is a barrier, ask your doctor whether there are other weight loss medications that Medicare might cover, or whether a manufacturer information program could help. Some programs do not require a diabetes diagnosis.

What Changes During Open Enrollment

Every October, Medicare Part D plans change their formularies. A drug that was covered last year might move to a higher tier, require prior authorization, or be dropped entirely. Conversely, a drug that was not covered might be added. This is why it is important to check your coverage every year, even if you have been taking the same medication for years.

During open enrollment (October 15 to December 7), you can switch to a different Part D plan if your current plan's coverage or cost changes in a way that does not work for you. You can also switch if you find a plan with lower copays for the drugs you take. The new plan starts January 1.

Set a reminder in October to review your plan's formulary. Call your plan or check its website to see whether your GLP-1 drug is still covered and at what cost. If the cost has gone up significantly or the drug is no longer covered, use the Medicare Plan Finder tool at Medicare.gov to compare other plans in your area.

Frequently Asked Questions

Will Medicare cover Ozempic or Mounjaro if I use it for weight loss instead of diabetes?

No. Medicare Part D covers these drugs only when prescribed for type 2 diabetes. If your doctor prescribes the same drug for weight loss, Medicare will not pay. The prescription code and diagnosis code determine coverage, not the drug itself.

Can my doctor appeal if Medicare denies coverage?

Yes. Your doctor can request a coverage exception or appeal if they believe the drug is medically necessary. The process takes one to two weeks. Your doctor's office handles the paperwork — you do not need to do anything except provide medical records if asked.

What if I cannot afford the copay even with Medicare?

Ask about the Medicare Part D Low-Income Subsidy if your income is below 150 percent of the federal poverty line. You can also contact the drug manufacturer's patient information program. Novo Nordisk and Eli Lilly both have programs that reduce cost based on income, and they work alongside Medicare.

Can I switch Part D plans if my plan stops covering my GLP-1 drug?

Yes, but only during open enrollment (October 15 to December 7) or if you have a may have access to life event like moving to a new state. If you need the drug before open enrollment, ask your doctor about alternative medications your plan does cover, or contact the manufacturer's information program.

Do all Medicare Advantage plans cover GLP-1 drugs the same way?

No. Medicare Advantage plans set their own formularies and coverage rules. Some cover GLP-1 drugs with low copays, others charge more, and some do not cover them at all. Check your specific plan's formulary or call customer service to find out what you will pay.