If you or a parent takes insulin for diabetes, Medicare will likely cover a continuous glucose monitor, but the coverage runs through Part B as equipment, not as a free preventive service. So the real questions aren't just "does Medicare cover a continuous glucose monitor" but "do I qualify" and "what will it cost me." Here's how both actually work.

In This Guide

Does Medicare Cover a Continuous Glucose Monitor?

Yes. Medicare Part B covers a therapeutic continuous glucose monitor and the sensors and supplies that go with it, and it does so as durable medical equipment, the same category as a walker or a hospital bed. A CGM is the small sensor you wear on your arm or belly that reads your blood sugar continuously and sends it to a receiver or your phone, so you're not pricking a finger a half-dozen times a day.

The one thing to get straight up front is which part of Medicare pays. A therapeutic CGM is a Part B equipment benefit, not a Part D prescription-drug benefit. That distinction matters because it decides where you get the device (a medical equipment supplier, not always the pharmacy counter) and how the cost is figured. More on the money below.

Who Qualifies for a Medicare CGM?

Coverage isn't automatic just because you have diabetes. Medicare's coverage page and its national coverage rules lay out a short list of conditions you have to meet.

Here's the plain-English version:

  • You take insulin, or you have a history of problem low blood sugar. Medicare's eligibility page puts it simply: "You take insulin or have a history of problems with low blood sugar (hypoglycemia)." The hypoglycemia route is meant for documented, recurring serious lows, not the occasional dip.
  • A doctor prescribes the CGM for how it's meant to be used. The device has to be prescribed in line with its Food and Drug Administration (FDA) approved uses.
  • You (or a caregiver) are trained to use it. Someone who's going to operate the monitor needs training on the device.

If that's you, you're in the group Medicare designed this benefit for. If you have Type 2 diabetes managed with pills and no insulin and no history of dangerous lows, you may not clear the bar yet. That's a conversation to have with your doctor, who's the one who documents which route you qualify under.

What Does a CGM Actually Cost With Medicare?

This is where the "is it free?" assumption falls apart. A Medicare CGM is durable medical equipment, and DME comes with standard Part B cost-sharing, not the $0 price tag some preventive services carry.

Two numbers drive what you'll pay. First, the annual Part B deductible, which is $283 in 2026. You pay that once for the year across all your Part B services before Medicare starts paying its share. Second, the coinsurance: once the deductible is met, Medicare's own coverage page spells it out plainly, "After you meet the Part B deductible, you pay 20% of the Medicare-approved amount (if your supplier accepts assignment).",

That 20% applies to the ongoing supplies too, not just the initial device, so this is a recurring cost, not a one-time one. The phrase "if your supplier accepts assignment" is doing real work in that sentence. A supplier who accepts assignment agrees to Medicare's approved amount as full payment, which caps your share at that 20%. It's worth confirming your supplier does before you order, because it's the difference between a predictable bill and a larger one.

How to Get a Continuous Glucose Monitor That Medicare Covers

The path is short, and your doctor's office does most of the paperwork. In practice it goes like this:

  1. Talk to your doctor. They confirm you meet Medicare's criteria (insulin use or a history of problem lows), document it, and write the prescription for a CGM used the way it's FDA-approved to be used.
  2. Get trained on the device. You or the family member who'll manage it needs training on how the monitor works.
  3. Fill it through a supplier that accepts assignment. The CGM comes through a medical equipment supplier, and picking one that accepts Medicare assignment is what holds your cost to the 20% coinsurance.

If a step stalls, the doctor's office is usually the place to unstick it, since they hold the documentation Medicare wants to see.

Frequently Asked Questions

Does Medicare cover a CGM if I have diabetes but don't take insulin?

Possibly. Medicare's eligibility page describes two routes: taking insulin, or having "a history of problems with low blood sugar (hypoglycemia)." If you don't use insulin, you'd qualify through the documented-hypoglycemia route rather than the insulin one. Your doctor decides and documents which one fits your case.

How much will a continuous glucose monitor cost me under Medicare?

After you meet the annual Part B deductible ($283 in 2026), you generally pay 20% of the Medicare-approved amount, as long as your supplier accepts assignment. That 20% applies to the sensors and supplies you keep buying, so treat it as an ongoing cost rather than a single purchase.

Is a Medicare CGM covered under Part B or Part D?

Part B. Medicare covers a therapeutic CGM as durable medical equipment, which is a Part B benefit, not a Part D prescription-drug benefit. That's why you get it through a medical equipment supplier and pay the Part B deductible and coinsurance rather than a pharmacy copay.

What do I need before Medicare will cover one?

Three things: you meet the medical criteria (insulin use or a history of problem low blood sugar), your doctor prescribes the device for its FDA-approved use, and you or a caregiver are trained to use it.

Learn More

MedicareWhat Medicare Covers for DiabetesHow Medicare covers diabetes in 2026: the $35 monthly insulin cap, CGMs, test strips, and what falls under Part B versus Part D, plus training and prevention. MedicareHow Medicare Covers Durable Medical EquipmentHow Medicare durable medical equipment coverage works: the 5 rules for covered DME, your 20% cost, the enrolled-supplier rule, and rent vs. buy in 2026. MedicareHow Much Does Medicare Cost?How much does Medicare cost in 2026? Part A, B, C, and D premiums, deductibles, and coinsurance, plus IRMAA and ways to lower your Medicare costs.

Find personalized help figuring out whether a parent's continuous glucose monitor is covered by Medicare at brevy.com.

The information on Brevy.com is for educational purposes only and is not a substitute for professional legal, financial, or medical advice. Rules vary by state and program and change frequently. Always verify with the relevant agency or a qualified professional. Brevy is not a law firm, financial advisor, or healthcare provider.

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Brevy Care Team

Expert eldercare guidance from Brevy's team of healthcare professionals and researchers.