Medicare covers a new glucose meter once every 12 months, but the exact timing depends on which Medicare program you have and whether your meter is integrated with other devices

Medicare Part B covers blood glucose monitors (also called glucose meters) as durable medical equipment. The standard rule is one meter per 12-month period. However, Medicare will pay for a replacement sooner if your current meter is lost, stolen, or irreparably damaged — you will need to document what happened and provide a written statement to your supplier.

If you use a continuous glucose monitor (CGM) instead of a traditional finger-stick meter, different rules explore. CGMs are covered separately and have their own replacement schedule. The distinction matters because some people use both devices, and Medicare counts them differently.

The supplier you work with — not Medicare directly — handles the paperwork and timing. If you order from the wrong supplier or do not have a written order from your doctor, Medicare will deny the claim even if you are within the coverage window.

Key Takeaways

  • Medicare Part B covers one glucose meter per 12 months, with the 12-month period starting from the date Medicare paid for your previous meter, not from January 1st.
  • If your meter is lost, stolen, or broken beyond repair, you can request a replacement outside the 12-month window by providing written documentation of what happened.
  • You must order through a Medicare-enrolled supplier and have a written order from your doctor; ordering directly from a pharmacy or retailer will not be covered.
  • Continuous glucose monitors (CGMs) follow a separate coverage schedule and are not counted against your annual glucose meter benefit.
  • Your out-of-pocket cost depends on whether you have Part B coverage only or also have a Medigap or Medicare Advantage plan that covers durable medical equipment.

How the 12-month replacement window actually works

The 12 months does not reset on January 1st. It runs from the date Medicare paid your supplier for your last meter. If Medicare paid for your meter on March 15, 2024, you become may be able to access for a new one on March 15, 2025. Ordering before that date will be denied unless you have documented loss, theft, or damage.

Your supplier can see this date in their system. Before you order, ask them to confirm the date of your last covered meter. Many people assume they can order a new one at the start of the calendar year and end up with a denied claim because the 12 months have not actually passed.

If you switch suppliers, the 12-month clock does not restart. The new supplier can look up your history and will see when Medicare last paid for your meter. This prevents people from gaming the system by changing suppliers to reset the timeline.

What counts as loss, theft, or damage that qualifies for early replacement

Medicare will cover a replacement meter outside the 12-month window if you can document that your current one is lost, stolen, or damaged beyond repair. You will need to provide a written statement describing what happened — a straightforward email or letter to your supplier is usually sufficient, though some suppliers have a specific form.

Damage that qualifies typically means the meter no longer functions at all: the screen is cracked and unreadable, water damage has rendered it unusable, or the buttons no longer respond. Normal wear and tear, a meter that works but has cosmetic damage, or a meter that works but is slow does not may have access to.

If your meter is stolen, you may need to file a police report or at least provide a statement that you reported it. Different suppliers have different standards, so ask what documentation they need before you submit your request. Having this in writing prevents back-and-forth delays.

Continuous glucose monitors and how they fit into your coverage

If you use a CGM — such as a Dexcom, FreeStyle Libre, or Medtronic Guardian — Medicare covers it separately from your glucose meter benefit. You can have both a CGM and a traditional meter covered in the same 12-month period without one counting against the other.

CGMs have their own replacement schedule. Most are covered once every 30 days (for the sensor) or once every three months (for the transmitter, depending on the brand). The exact timing varies by device and by your specific Medicare coverage, so check with your supplier about your particular CGM.

Some people use a CGM as their primary glucose monitor and do not use a traditional meter at all. In that case, you still have access to one covered glucose meter per year if you need it — for example, if your CGM fails and you need a backup while waiting for a replacement sensor.

How to order through a Medicare-enrolled supplier

You cannot straightforward buy a glucose meter at a pharmacy and submit the receipt to Medicare. You must order through a Medicare-enrolled durable medical equipment (DME) supplier. Your doctor provides a written order, you contact an approved supplier, and the supplier bills Medicare directly.

To find an enrolled supplier, use the Medicare Supplier Directory on Medicare.gov or call 1-800-MEDICARE. You can also ask your doctor's office which suppliers they work with regularly. Some suppliers specialize in diabetes equipment and have faster turnaround times.

When you contact the supplier, have your Medicare number and your doctor's name ready. The supplier will verify your coverage, confirm you are within the 12-month window (or document your reason for an early replacement), and arrange delivery. Most meters arrive within 5 to 10 business days.

What you will pay out of pocket

If you have Original Medicare (Part A and Part B) with no supplemental coverage, you typically pay 20 percent of the Medicare-approved amount for the meter after you meet your Part B deductible. The deductible is the same for all Part B services combined, so if you have already met it for other services this year, you may have no out-of-pocket cost.

If you have a Medigap plan, your supplemental coverage may cover the 20 percent coinsurance, depending on which plan you have. Plans C, D, G, and M cover Part B coinsurance, while Plans A and B do not. Check your plan documents or call your Medigap insurer to confirm.

If you have Medicare Advantage (Part C), your out-of-pocket cost depends on your specific plan. Some plans cover glucose meters with no copay, others charge a copay, and a few may require you to use a specific supplier. Review your plan's formulary or call the plan directly to find out your cost.

Common mistakes that lead to denied claims

Ordering before 12 months have passed is the most common reason for denial. The second most common is ordering from a non-enrolled supplier — a pharmacy, a big-box retailer, or an online seller that does not have a Medicare contract. Even if the meter is the same brand and model, Medicare will not pay if it did not come through an enrolled supplier.

A third mistake is not having a written order from your doctor. Some people call their doctor's office, speak to a nurse, and assume that counts as an order. Medicare requires a written prescription or order form. If your doctor's office says they sent one but the supplier never received it, ask for a copy to be faxed directly to the supplier.

Waiting until you run out of test strips to order a new meter can also cause delays. Order while you still have strips on hand so there is no gap in your ability to test. If you wait until the last moment and the supplier is slow, you may end up without a meter for a few days.

What to do if your claim is denied

If Medicare denies your claim, your supplier will send you a notice called a Explanation of Benefits (EOB). Read it carefully — it will state the reason for denial. Common reasons are "not within 12-month window," "no written order on file," or "supplier not enrolled."

If the reason is that you are not within the 12-month window but you have documented loss, theft, or damage, contact your supplier and provide the written statement. They can resubmit the claim with the documentation. If the reason is no written order, ask your doctor to send one when ready and have the supplier resubmit.

If the supplier is not enrolled, you will need to order from a different supplier. Ask your doctor to send a new order to an enrolled supplier, or use the Medicare Supplier Directory to find one in your area. You can appeal the denial, but it is usually faster to straightforward reorder through the correct channel.

Frequently Asked Questions

Can I order a glucose meter from my local pharmacy and have Medicare pay for it?

No. Medicare only covers meters ordered through an enrolled DME supplier, not through pharmacies or retail stores. Your doctor must send a written order to the supplier, and the supplier bills Medicare directly. If you buy a meter at a pharmacy, Medicare will not reimburse you.

What if I lost my meter two months after getting a new one?

You can request a replacement by providing written documentation of the loss to your supplier. They will submit it to Medicare along with your request. Medicare will usually approve it if you can describe what happened and confirm the meter is truly gone, not just misplaced.

Does my Medicare Advantage plan cover glucose meters the same way as Original Medicare?

No. Medicare Advantage plans set their own coverage rules. Some cover meters with no copay, others charge a copay, and some may require you to use a specific supplier or brand. Check your plan documents or call the plan to find out your coverage and any restrictions.

If I use a continuous glucose monitor, do I still get a covered glucose meter?

Yes. A CGM and a traditional glucose meter are covered separately. You can have both in the same year. The CGM has its own replacement schedule (usually monthly or quarterly for sensors), and you still have access to one covered meter per 12 months if you need it.

How do I know if my supplier is enrolled with Medicare?

Use the Medicare Supplier Directory at Medicare.gov or call 1-800-MEDICARE. You can also ask your doctor's office which suppliers they work with. An enrolled supplier will have a Medicare provider number and will bill Medicare directly rather than asking you to pay upfront and seek reimbursement.