Medicare and Insulin Coverage: What You Need to Know in 2026

If you use insulin, Medicare covers it, but the details depend on how you get your insulin and which part of Medicare applies. Understanding the difference between Part B and Part D insulin coverage can save you hundreds of dollars a year.

Here is what Medicare covers in 2026 and how to make sure you are getting the best deal on your insulin.

Does Medicare Cover Insulin?

Yes. Medicare covers insulin through two different programs depending on how it is administered:

• Part B covers insulin used with an insulin pump (Durable medical equipment)
• Part D covers self-administered insulin purchased at a pharmacy

Most Medicare beneficiaries who take insulin get it through Part D, their prescription drug plan. That is the coverage most people are referring to when they ask whether Medicare covers insulin.

The $35 Monthly Cap on Insulin

Starting in 2023, the Inflation Reduction Act capped the monthly cost of insulin at $35 per month for Medicare Part D beneficiaries. This cap applies regardless of what stage of coverage you are in, Deductible, initial coverage, or catastrophic.

In 2026, this $35 cap remains in place. Here is what it means in practice:

• You pay no more than $35 per month for a 30-day supply of each covered insulin product
• The cap applies to all Part D plans, including standalone drug plans and Medicare Advantage Plans with drug coverage
• You do not have to meet your deductible before the $35 cap kicks in, it applies from day one

This is a significant benefit. Before the cap, some Medicare beneficiaries were paying $100 or more per month for a single insulin product.

How Part D Covers Insulin

Part D covers insulin you pick up at a pharmacy and inject yourself. This includes:

• Rapid-acting insulin (such as Humalog, Novolog, and generic versions)
• Long-acting insulin (such as Lantus, Basaglar, Tresiba, and generics)
• Premixed insulin products
• Inhaled insulin (Afrezza)

Each Part D plan has its own Formulary, a list of covered drugs. Not every plan covers every insulin product. Before enrolling in a Part D plan, check whether your specific insulin brand is on that plan’s formulary and what tier it falls on.

If your insulin is not on a plan’s formulary, you can ask for a formulary exception. Your doctor will need to submit documentation that the drug is Medically necessary for you.

How Part B Covers Insulin

Part B covers insulin only in a specific situation: when it is used in an insulin pump that Medicare covers as durable medical equipment (DME).

If you use an external insulin pump, Medicare Part B will cover:

• The insulin pump itself (after a 13-month rental, it becomes your property)
• The insulin used in the pump
• Related supplies (tubing, reservoirs, infusion sets)

Part B covers 80% of the Medicare-approved amount after you meet your Part B deductible ($283 in 2026). You pay 20% Coinsurance. If you have a Medicare Supplement plan (Medigap), your supplement may cover that 20%.

Note that the $35 monthly cap described above is a Part D benefit only. Insulin covered under Part B is subject to standard Part B cost-sharing rules.

What About Insulin Covered at a Doctor’s Office?

If a nurse or other provider administers insulin during a medical visit, it may be covered under Part B as a physician-administered drug rather than a self-administered drug. This is less common with insulin but can happen in certain clinical settings.

The Part D Deductible and Insulin

Even with the $35 cap, you should understand how the Part D deductible works. In 2026, the maximum allowable Part D deductible is $615, though many plans set theirs lower.

The good news: the $35 cap on insulin applies before the deductible. You will never pay more than $35 per month for covered insulin, even during the deductible phase of your coverage.

Medicare Advantage and Insulin

If you have a Medicare Advantage plan (Part C) that includes drug coverage, the $35 insulin cap applies to your plan as well. Check your plan’s formulary to confirm your insulin is covered.

Some Medicare Advantage plans offer additional benefits, such as a $0 copay on certain generics or preferred insulins, that may reduce your cost below $35.

Extra Help and Insulin Costs

If you qualify for the Extra Help program (also called Low Income Subsidy), your insulin costs may be even lower than $35 per month. Extra Help reduces or eliminates premiums, deductibles, and copays for Part D beneficiaries with limited income and resources.

To see if you qualify, contact Social Security at 1-800-772-1213 or apply at ssa.gov.

How to Choose the Right Part D Plan for Insulin Users

When comparing Part D plans during Medicare Open Enrollment (October 15 to December 7), insulin users should look at:

2. Is your specific insulin on the formulary? Check the plan’s drug list for your brand and dosage.


3. What tier is your insulin on? Lower Tiers mean lower copays.


4. Does the plan charge a deductible, and does it apply to your insulin? Remember, the $35 cap applies even during the deductible phase.


5. What pharmacies are in-network? Using a preferred pharmacy can reduce costs further.

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