Medicare may cover a continuous glucose monitor (CGM) when its clinical and documentation requirements are met. Having diabetes or seeing an advertisement does not automatically establish coverage. This guide concerns insurance verification; your treating professional selects appropriate care.
Start with your treating professional
Ask whether you meet Medicare's current CGM criteria and whether your medical record contains the required evidence. The rules include specific treatment-related or documented low-blood-sugar criteria, a prescription and training requirements. Medicare also requires an evaluation before ordering the device and follow-up documentation. Have the practice check the full official criteria rather than relying on a product advertisement or an older article.
Know which coverage handles the order
| Question | What to confirm |
|---|---|
| Original Medicare | Whether the CGM and supplies qualify under Part B durable medical equipment rules |
| Medicare Advantage | Your plan's supplier network, authorization process and member cost |
| Replacement supplies | Covered items, permitted quantities and reorder requirements |
Check the supplier before ordering
- Confirm that the supplier participates in your exact coverage.
- Ask whether it accepts Medicare assignment if you use Original Medicare.
- Verify the device, receiver and supplies that the prescription and coverage authorize.
- Request the expected deductible and coinsurance or copayment in writing.
- Ask how follow-up visits and future supplies are documented.
Understand what you may owe
Under Original Medicare, the usual Part B equipment cost sharing generally applies after the deductible. Medicare Advantage costs depend on the plan. A statement that a device is “covered” does not mean it has no cost, that every model qualifies or that every seller can bill your insurance.
If coverage is unclear or denied
Request the reason and any missing documentation. The treating practice can address clinical records; the plan or supplier can explain billing requirements. If you receive a formal denial, follow its appeal instructions and deadline. A Licensed Insurance Agent can help you find the relevant plan documents but does not determine clinical eligibility.
Searching for FreeStyle Libre coverage?
FreeStyle Libre is a glucose-monitor product name, not an insurance plan. Apply the CGM eligibility and supplier checks above to the exact model your practitioner orders. An older article about a 14-day model does not confirm current product availability, compatible supplies or your individual coverage. Ask the supplier to verify the current device and prescription before ordering; this guide does not recommend a brand.
Continue with a related question
- How to Find and Verify a Medicare Provider
- Walkers and Medicare: Check the Order and Supplier
- A Medicare Medical Claim Was Denied: What to Do Next