What You Need to Know About Medicare Coverage for Freestyle Libre

Medicare covers Freestyle Libre, but only under specific conditions

Medicare Part B covers the FreeStyle Libre continuous glucose monitor (CGM) if you have diabetes and meet certain requirements. The device itself and the sensors are covered, but you will need to use a Medicare-approved supplier and your doctor must prescribe it as medically necessary. Coverage is not automatic — your doctor has to document that you meet the criteria, and the supplier has to submit the claim correctly.

The amount Medicare pays depends on whether you have Original Medicare or a Medicare Advantage plan. Original Medicare typically covers 80 percent of the approved amount after you meet your Part B deductible. Medicare Advantage plans vary by plan and by region, so you will need to check your specific plan's formulary or call the plan directly.

Key Takeaways

Your doctor must prescribe Freestyle Libre and document that you have diabetes and need continuous glucose monitoring for medical reasons.
You must order through a Medicare-approved durable medical equipment (DME) supplier, not directly from Abbott or a pharmacy.
Original Medicare covers 80 percent of the approved amount after your Part B deductible; Medicare Advantage coverage varies by plan.
You will pay out-of-pocket costs that depend on your plan type, deductible status, and whether the supplier is in-network.

What your doctor needs to do first

Your doctor must write a prescription for the Freestyle Libre and include a statement that continuous glucose monitoring is medically necessary for your diabetes care. Medicare requires this documentation before any supplier will submit a claim. The prescription should specify that you need real-time glucose readings, which is the key reason Medicare covers this device.

If your doctor has never prescribed a CGM before, they may need guidance on the specific wording Medicare requires. You can ask your doctor's office to contact a Medicare-approved DME supplier — the supplier's staff can often help the doctor's office understand what documentation Medicare needs. Do not assume your doctor knows the Medicare requirements; many do not prescribe CGMs regularly.

How to order through a Medicare-approved supplier

You cannot buy Freestyle Libre directly from Abbott or from a pharmacy and have Medicare pay for it. You must order through a company that holds a Medicare DME supplier number. These suppliers are listed in the Medicare Supplier Directory, which you can search at dmepos.cms.gov. Search for "continuous glucose monitor" or "Freestyle Libre" along with your zip code to find suppliers near you.

Call the supplier and tell them you have a prescription for Freestyle Libre and want to know if they accept Medicare. Ask whether they are in-network for your plan (if you have Medicare Advantage) and what your out-of-pocket cost will be. The supplier will handle submitting the prescription to Medicare and billing your plan. You should receive your first sensors within one to two weeks of the supplier receiving your prescription.

What you will pay out of pocket

With Original Medicare, you pay 20 percent of the Medicare-approved amount for the reader device and each sensor after you have met your Part B deductible for the year. The deductible is set each year by Medicare; in 2024 it was $240. Once you meet the deductible, you pay 20 percent of what Medicare approves for each sensor and reader.

The exact amount varies because Medicare's approved amount differs by region and supplier. A typical out-of-pocket cost for sensors ranges from $30 to $50 per sensor after your deductible is met, but this is not a may provide — your actual cost depends on your supplier and your region. If you have Medicare Advantage, your costs depend entirely on your plan's coverage rules, which may include copays, coinsurance, or different deductibles.

If your Medicare Advantage plan denies coverage

Some Medicare Advantage plans do not cover Freestyle Libre, or they cover it only under certain conditions — for example, only if you use insulin or only after you have tried other glucose monitors first. If your plan denies the claim or your doctor's request for prior authorization, you have the right to appeal.

Ask your plan for the denial in writing and the specific reason. Then ask your doctor to submit an appeal with additional medical documentation explaining why Freestyle Libre is necessary for your care. Many plans will approve on appeal if your doctor provides evidence that other monitoring methods have not worked or that your diabetes requires real-time glucose data. The appeal process usually takes 30 to 60 days.

Replacing sensors and ongoing costs

Freestyle Libre sensors last 14 days each, so you will need a new sensor every two weeks. Medicare covers replacement sensors at the same rate as the initial sensors — 80 percent of the approved amount with Original Medicare, after your deductible. You do not need a new prescription for each sensor; one prescription typically covers ongoing sensor replacements for up to one year.

The reader device itself is covered once per year by Medicare. If your reader breaks or stops working, your supplier can request a replacement through Medicare. Keep your receipts and documentation of when you received your reader, because Medicare will ask for this information if you need a replacement.

Frequently Asked Questions

Can I use my Freestyle Libre prescription from my doctor at a regular pharmacy?

No. Pharmacies cannot bill Medicare for Freestyle Libre. You must use a Medicare-approved DME supplier. If a pharmacy fills your prescription, you will have to pay the full retail price out of pocket, and Medicare will not reimburse you.

What if I cannot find a Medicare supplier in my area?

Search the Medicare Supplier Directory at dmepos.cms.gov and expand your search radius. Many suppliers ship nationwide, so you may be able to order from a supplier outside your when ready area. If you still cannot find one, ask your doctor's office for help — they may have contacts with suppliers who work with their patients.

Do I need prior authorization from Medicare before I order?

Original Medicare does not require prior authorization for Freestyle Libre if your doctor's prescription includes the medical necessity statement. Medicare Advantage plans often do require prior authorization. Your supplier will usually submit the prior authorization request on your behalf, but confirm this with them before you place your order.

Will Medicare cover Freestyle Libre if I do not use insulin?

Yes. Medicare covers Freestyle Libre for any person with diabetes who needs continuous glucose monitoring, regardless of whether they use insulin. Your doctor must document the medical reason you need real-time glucose readings, but insulin use is not a requirement.

What happens if I reach my out-of-pocket maximum?

With Original Medicare, there is no annual out-of-pocket maximum — you continue paying 20 percent of approved costs for the rest of the year. Medicare Advantage plans have out-of-pocket maximums, usually between $6,700 and $7,550 per year. Once you reach your plan's maximum, the plan pays 100 percent of covered costs for the rest of the year.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.