Medicare Part B covers glucose meters and test strips, but only if your doctor prescribes them and you meet specific conditions

Medicare Part B will pay for a blood glucose monitor and test strips if you have diabetes and your doctor writes an order saying you need them. The program covers the meter itself, lancets (the small needles), and test strips — but not all brands, and not without documentation. You pay 20 percent of the approved amount after you meet your Part B deductible, and the supplier must be enrolled with Medicare.

The catch is that Medicare requires proof you actually have diabetes and that your doctor believes monitoring at home is medically necessary. If you use insulin, this is usually straightforward. If you take other diabetes medications or manage through diet alone, your doctor may need to document why home testing is required. Without that order, Medicare will deny the claim.

Key Takeaways

  • Medicare Part B covers glucose meters and test strips when prescribed by your doctor, but you pay 20 percent of the approved amount after your deductible.
  • Your doctor must write an order stating you have diabetes and need home glucose monitoring — the order is not automatic even if you have a diabetes diagnosis.
  • You must use a Medicare-approved supplier, and not all meter brands are covered under the same terms.
  • Medicare typically covers one meter every five years and a set quantity of test strips per month based on how often your doctor says you should test.
  • If you use insulin, getting coverage is usually faster; if you do not, your doctor may need to provide extra documentation of medical necessity.

How to get your meter and strips covered

Start by asking your doctor to write a written order for a glucose meter and test strips. The order should state that you have diabetes and that home monitoring is medically necessary. Your doctor's office may have a form they use, or they can write it on a prescription pad — Medicare does not require a specific format, but the order must be dated and signed.

Once you have the order, contact a Medicare-approved supplier. You can find one by calling Medicare at 1-800-MEDICARE or searching the Medicare supplier directory online. Tell the supplier your Medicare number and give them the doctor's order. The supplier will verify your coverage, tell you what your out-of-pocket cost will be, and ship the meter and initial supply of strips to your home.

Keep a copy of your doctor's order for your records. If Medicare denies the claim later, you will need it to file an appeal.

What Medicare actually pays for

Medicare covers the glucose meter itself once every five years. This means if you already have a meter, Medicare will not pay for a replacement until five years have passed, even if the first one breaks or stops working. After five years, you can get a new one covered.

Test strips are covered on an ongoing basis. Medicare sets a monthly limit based on how often your doctor says you should test. If your doctor's order says you should test three times daily, Medicare will cover roughly 90 test strips per month (30 days × 3 tests). If you test more often than your doctor's order states, you pay out of pocket for the extra strips. If you test less often, you do not get a refund — you straightforward use fewer strips from your monthly supply.

Lancets (the needles used to prick your finger) are also covered, typically at 100 per month. Lancing devices — the small spring-loaded tools that hold the lancet — are usually covered as well, though some suppliers charge a small copay.

The difference between Part B and Part D coverage

Medicare Part B covers the physical equipment: the meter, lancets, and lancing device. Part D (prescription drug coverage) does not cover these items because they are not drugs.

Test strips, however, can sometimes be covered under Part D if your plan includes them as a covered supply. This is rare and depends on your specific plan. In most cases, Part B is the primary payer. If you have both Part B and Part D, ask your supplier which program they will bill first — usually it is Part B.

If you have Original Medicare (Part A and Part B) with no Part D plan, you still have coverage for strips under Part B. If you have a Medicare Advantage plan (Part C), coverage rules may differ; check your plan's formulary or call the plan directly to confirm what is covered.

Common reasons Medicare denies glucose meter claims

The most common reason for denial is a missing or incomplete doctor's order. Medicare needs written proof that your doctor prescribed the meter and that you have diabetes. A diagnosis code in your medical record is not enough — your doctor must write an actual order.

The second reason is using an unapproved supplier. If you order a meter directly from a pharmacy or online retailer that is not enrolled with Medicare, Medicare will not pay. Always confirm the supplier is Medicare-approved before placing an order.

A third reason is exceeding the five-year replacement window for the meter itself. If you already received a covered meter less than five years ago and request another one, Medicare will deny it. You can appeal if the first meter was lost, stolen, or irreparably damaged, but you will need to document this.

Finally, if your doctor's order does not specify how often you should test, Medicare may deny the strips or cover fewer than you expected. Make sure your doctor's order includes the testing frequency (for example, "test three times daily" or "test twice daily before meals").

What you pay out of pocket

You pay 20 percent of Medicare's approved amount for the meter and supplies after you meet your Part B deductible. The deductible for 2024 is $240, though this amount changes yearly. Once you reach the deductible, you pay 20 percent of the approved amount for each item.

The approved amount varies by item and supplier. A glucose meter might have an approved amount of $50 to $100, meaning you would pay $10 to $20 after your deductible. Test strips typically have an approved amount of $1 to $2 per strip, so a month's supply of 90 strips might cost you $18 to $36 after your deductible.

If you have a Medigap or Medicare Advantage plan, your out-of-pocket costs may be lower. Some Medigap plans cover the 20 percent coinsurance, and some Medicare Advantage plans have different cost-sharing rules. Check your plan documents or call your plan to see what you will actually owe.

Continuous glucose monitors and Medicare coverage

Continuous glucose monitors (CGMs) — devices that measure glucose throughout the day without finger pricks — are covered by Medicare Part B under certain conditions. Your doctor must order one, and you must meet specific criteria. Generally, Medicare covers CGMs for people who use insulin, though coverage rules have expanded in recent years.

The approval process for a CGM is more involved than for a standard meter. Your doctor may need to submit additional documentation, and Medicare may require a prior authorization before the supplier ships the device. If your doctor thinks a CGM would help you manage your diabetes, ask them whether you meet Medicare's coverage criteria and what paperwork they need to submit.

CGM supplies (sensors and transmitters) are covered on an ongoing basis once the device is approved, similar to test strips for a standard meter.

Frequently Asked Questions

What if my doctor says I do not need to test at home?

If your doctor does not believe home glucose monitoring is medically necessary, Medicare will not cover a meter or strips. This sometimes happens if you manage your diabetes through diet alone or take medications that do not require monitoring. You can discuss with your doctor whether testing would help you, but Medicare will only pay if your doctor writes an order saying it is necessary.

Can I use a meter or strips from a brand Medicare does not cover?

You can buy any brand you want, but Medicare will only pay for approved brands through approved suppliers. If you use a non-covered brand, you pay the full cost yourself. Ask your supplier which brands are covered under your plan before you order.

What happens if my meter breaks before five years?

Contact your supplier and explain what happened. Some suppliers will replace a broken meter at no charge under warranty. If the warranty does not cover it and you are still within the five-year window, Medicare will not pay for a replacement. You can appeal if you can document that the meter was defective, but approval is not may provide.

Do I need a new doctor's order every time I reorder strips?

No. Once your doctor writes an initial order with a testing frequency, that order typically remains valid for one year. Your supplier can refill strips based on that order without asking your doctor each time. However, if your testing needs change or your doctor updates your diabetes management plan, ask your doctor to write a new order.

Will Medicare cover a meter if I have a Medicare Advantage plan?

Medicare Advantage plans must cover at least what Original Medicare covers, but the details vary by plan. Some plans cover the same items with the same cost-sharing; others may have different rules or require you to use specific suppliers. Call your plan or check your plan documents to see what is covered before you order.