Key Takeaways

  • Due in part to the rising costs of prescription insulin, diabetes is the costliest chronic condition in America.

  • Medicare Part D covers injectable insulin that's not used with an insulin pump. It also covers certain medical supplies used to inject insulin, such as syringes, gauze, and alcohol swabs.  

  • Original Medicare does provide some coverage for insulin, but only if you receive your insulin through an insulin infusion pump.

This article was updated in September 2022 after passage of the Inflation Reduction Act.

Due in part to the rising costs of prescription insulin, which is used by an estimated 8.3 million people to control their blood sugar, diabetes is the costliest chronic condition in America.1 If you are on Medicare and have diabetes—or if you’ll soon be eligible to enroll—you may be wondering whether Medicare provides coverage for insulin.

Below is an overview of the insulin coverage provided by Medicare Part B (medical insurance) and Medicare Part D (prescription drug coverage). You must have Part B and Part D to receive the services and supplies they cover.

Is insulin covered by Medicare Part B in 2022?

Original Medicare only pays for insulin that is administered through an external insulin pump (continuous subcutaneous infusion pump). This coverage is provided under Part B.

Why is insulin not covered by Medicare Part B?

Insulin is a prescription drug used to control diabetes. Medicare Part B does not routinely cover prescription drugs. To get Medicare drug coverage, you must join a Medicare-approved plan that offers drug coverage. If you do not choose to enroll into a Medicare Part D drug plan, you can expect to pay 100% of the out-of-pocket cost for insulin administered via injections or inhalation. You also pay 100% for insulin pens, needles, syringes, alcohol swabs, and gauze.

Medicare Part D covers many types of injectable insulins as well as inhaled insulin, along with the supplies needed to use them.

When does Medicare Part B cover insulin?

If you’re medically required to receive insulin via an insulin infusion pump, Medicare Part B covers the cost of the insulin. You pay 20% of the Medicare-approved amount (the amount payable to a doctor or supplier that accepts Medicare) after you meet the Part B deductible.

Medicare Part B also covers other supplies needed by older adults with diabetes. There may be limits on how much or how often you receive these supplies, which include:

  • Insulin pumps and pump supplies
  • Blood sugar or glucose testing monitors
  • Lancets and lancet devices
  • Glucose control solutions

It’s important that you only order supplies from a pharmacy or supplier that accepts and bills Medicare. This will help ensure that Medicare covers your purchase and saves you money. With diabetes supplies covered under Medicare Part B, you pay 20% of the Medicare-approved amount after the yearly Part B deductible.

What insulin is covered by Medicare Part D?

Available to all Medicare beneficiaries, Part D is Medicare’s prescription drug program. You can purchase a drug plan that meets your needs through a private, Medicare-approved insurance carrier. If you have Medicare Advantage (Part C), you may be able to get your drug coverage that way.

Part D covers injectable and inhaled insulin that's not used with an insulin pump. It also covers certain medical supplies used to inject or inhale insulin, like inhaled insulin devices, syringes, gauze, needles, and alcohol swabs.

Most Part D plans charge a monthly premium that’s separate from the Medicare Part B premium you may already be paying. You will be responsible for other out-of-pocket costs, too, such as coinsurance or copayments. Many drug plans also have a deductible that you must satisfy before your plan coverage kicks in.

How can I afford insulin on Medicare?

Worried about affording the insulin you need to manage your diabetes? You may be able to save money through the Part D Senior Savings Model. This program is built into many Medicare drug plans and Medicare Advantage plans. Download a list of participating plans.

With this insulin savings program, plans offer a wide variety of formulary insulins—including rapid acting, short-acting, intermediate-acting, and long-acting versions—at a maximum $35 copayment per month’s supply. This copayment applies throughout the deductible, initial coverage, and coverage gap phases of your Medicare Part D drug coverage. It helps you save money by providing a predictable and consistent insulin copayment. Keep in mind that the cost of drugs may be different in the final phase or Catastrophic Coverage phase of the Part D benefit, as the $35 maximum copayment does not apply.

When selecting a Medicare drug plan, it is important to select a plan that provides the most value and savings on all your medications, not just insulin costs.  If you are unsure how to decide what plan is best for you, visit your local State Health Insurance Assistance Program (SHIP) office.

You may have heard that Congress passed and the president signed into law the Inflation Reduction Act that includes changes to Medicare. One change is that monthly out-of-pocket costs for insulin for Medicare beneficiaries will be capped at $35. This change will go into effect in 2023. This is great news for older adults with diabetes! Stay tuned for more information about when this change goes into effect and how to take advantage of it.

Eight (8) ways to save money on insulin

  1. Sign up for Diabetes Self-Management Training (DSMT). DSMT is outpatient training designed to help people effectively manage their diabetes. Medicare Part B may pay for up to 10 hours of this program, and you might also qualify for annual follow-up sessions. Your doctor or other qualified healthcare provider must order this training. During DSMT, you'll learn how to monitor your blood sugar and eat healthy. You'll also get tips on taking prescription drugs, which may include ways to save on insulin.
  2. Talk to your doctor. Ask your healthcare provider directly about programs or coupons that can help defray the cost of insulin. Also, not all insulin is priced the same. Check with your provider to see if there are less expensive options (e.g., generic versions) and ask if it's ok for you to switch. Your doctor may even have insulin samples on hand that they can give to you immediately.
  3. See if you qualify for Pharmaceutical Patient Assistance Programs. The U.S. manufacturers of insulin—Novo Nordisk, Eli Lilly, and Sanofi—offer Patient Assistance Programs to help make paying for insulin more manageable. Benefits include free insulin for a specific time period or insulin discounts. These programs are open to Medicare beneficiaries and uninsured individuals who meet certain income criteria.
  4. Check out State Pharmaceutical Assistance Programs. Some states help older adults with low income pay for their prescription medications, including insulin. Not all states participate, and eligibility criteria may be different from state to state. Use the Medicare website to find out if your state offers a Pharmaceutical Assistance Program.
  5. See if Walmart's ReliOn™ Insulin is right for you. ReliOn™ is Walmart’s over-the-counter brand of human insulin, which costs about $25 per vial. This is an older form of insulin that should be accompanied by a strict eating schedule, so talk to your doctor before using it. Walmart also offers a rapid-acting insulin called Novolog that's priced much lower ($72.88 per vial as of May 2022) than the original name-brand version.
  6. Take advantage of program matching services. Services such as and RxAssist help match you with programs that provide free and low-cost insulin to qualified individuals. You'll need to provide basic information such as your location, prescription, income, and insurance details.
  7. Look for savings on coupon sites. GoodRx, SingleCare, and other free sites can help ensure you're getting your insulin at the most affordable cost. You can print out a coupon or use your smartphone to redeem your savings when you pick up your insulin prescription.
  8. Use's NCOA's new and improved BenefitsCheckUp. NCOA’s BenefitsCheckUp connects you with programs that can help you save money on diabetes medications and other healthcare costs. Visit and enter your zip code to browse benefits, learn more about programs, and get information on how to apply. 

Buyer beware: Why you shouldn’t purchase insulin online

If you spot an ad for discount insulin, it can be tempting to stock up. But buying your insulin from unknown online retailers is a gamble. Often, the insulin shows up expired or in damaged packaging (which could signal tampering).

It's much safer to obtain your insulin from a known and reputable source—even if you have to pay a bit more.

If you can’t afford your insulin, don’t be afraid to ask for help

Being on a tight budget can cause us to cut corners sometimes. However, it’s never a good idea to ration your insulin to save money. Don’t skip doses, take less insulin than you’re prescribed, or delay your refills. This can lead to extremely high blood sugar and a potentially life-threatening diabetes complication called diabetic ketoacidosis.

If you're having trouble affording your insulin, explore the resources above or visit for additional options to help you pay for insulin and diabetes medication.


1. Insulin Cost and Pricing Trends, American Action Forum (April 2020). Found on the internet at