Medicare's Coverage of FreeStyle Libre Sensors

Medicare Part B covers FreeStyle Libre sensors for people with diabetes who meet specific requirements. The program pays for the sensor itself — the small patch you wear on your arm — but not the reader device you use to scan it. Your out-of-pocket cost depends on whether you have Original Medicare or a Medicare Advantage plan, and whether you have met your deductible.

As of 2024, Medicare Part B covers one FreeStyle Libre sensor per month under the Durable Medical Equipment (DME) benefit. The actual amount Medicare pays varies by supplier and region, but typically ranges between $50 and $70 per sensor. You pay 20 percent of that approved amount after you meet your Part B deductible (which is $240 in 2024). If you use more than one sensor per month, Medicare will not cover the extras.

The reader device — the handheld scanner you use to check your glucose — is not covered by Medicare. You must purchase it yourself, though FreeStyle sometimes offers discounts or payment plans. Some Medicare Advantage plans may cover the reader as an added benefit, so check your plan documents or call your plan directly.

Key Takeaways

  • Medicare Part B covers one FreeStyle Libre sensor per month, and you pay 20 percent of the approved cost after meeting your deductible.
  • The reader device is not covered by Medicare Part B, though some Medicare Advantage plans may include it as an extra benefit.
  • You must have a prescription from your doctor and meet diabetes-related requirements to receive coverage.
  • If you need more than one sensor per month, you will pay out of pocket for the additional sensors.

Who Qualifies for Medicare Coverage

Medicare covers FreeStyle Libre sensors only for people with diabetes who meet one of two conditions. You must either inject insulin at least once daily, or you must use a diabetes medication that carries a risk of low blood sugar (hypoglycemia). If you manage your diabetes with diet alone or with oral medications that do not cause low blood sugar, Medicare will not cover the sensor.

You also need a written prescription from your doctor. The prescription must state that you have diabetes and that continuous glucose monitoring is medically necessary for your care. Your doctor does not need to explain why you meet the insulin or medication requirement — that is assumed if they prescribe the sensor — but the prescription itself is required before any supplier will process your order.

How to Order Through Medicare

You cannot order FreeStyle Libre sensors directly from the manufacturer and have Medicare pay. You must order through a Medicare-approved DME supplier. These suppliers are companies that have contracted with Medicare to provide glucose monitors and related equipment.

Start by asking your doctor for a prescription and a list of approved suppliers in your area. If your doctor does not have a list, call your Medicare plan or visit Medicare.gov and search "DME suppliers near me." Call at least two suppliers to compare their processes and shipping times — some deliver within a week, others take longer.

When you call the supplier, have your Medicare number and prescription ready. The supplier will verify your coverage, confirm you have met your deductible (or calculate what you owe), and arrange shipment. Most suppliers ship directly to your home. You will receive an invoice showing what Medicare paid and what you owe.

What You Pay Out of Pocket

Your cost for FreeStyle Libre sensors under Medicare Part B is 20 percent of the approved amount, paid after you meet your annual Part B deductible. In 2024, the Part B deductible is $240. Once you have paid $240 toward Part B services in a calendar year, Medicare covers 80 percent of approved DME costs, and you pay 20 percent.

The approved amount varies slightly by region and supplier, but Medicare typically approves $50 to $70 per sensor. If the approved amount is $60, you would pay $12 per sensor (20 percent) after your deductible is met. If you have not met your deductible, you pay the full approved amount until you reach $240, then switch to paying 20 percent.

If you have a Medicare Advantage plan instead of Original Medicare, your out-of-pocket cost may be different. Some plans charge a copay (a flat fee like $10 or $15 per sensor), others charge coinsurance (a percentage), and some may cover the sensor with no cost to you. Check your plan's formulary or call the plan to find out your exact cost.

Medicare Advantage Plans and FreeStyle Libre

Medicare Advantage plans are required to cover at least what Original Medicare covers, but many cover more. Some plans cover the reader device as an added benefit, which Original Medicare does not. Others may cover more than one sensor per month, or may charge lower copays than the 20 percent coinsurance you would pay under Original Medicare.

The best way to know what your plan covers is to call the plan directly or check your plan's coverage documents (called the Summary of Benefits and Coverage). Ask specifically whether the reader is covered, whether you can get more than one sensor per month, and what your copay or coinsurance will be. Plans change their coverage each year, so check before you order.

Switching From Another Glucose Monitor

If you currently use a different continuous glucose monitor (CGM) or blood glucose meter, Medicare will still cover FreeStyle Libre as long as you meet the requirements above. You do not need to use up your current supply first. straightforward get a new prescription from your doctor and order through a DME supplier.

Some suppliers may ask whether you have used another monitor recently, but this does not prevent you from switching. Medicare does not limit how often you can change monitors, though in practice most people stay with one system for several months because switching requires a new prescription and a new supplier order.

Common Issues and How to Solve Them

The most common problem is that a supplier tells you Medicare will not cover the sensor because you do not meet the requirements. If this happens, ask the supplier to explain which requirement you did not meet. Then contact your doctor to clarify your prescription. Your doctor may need to add language stating that you inject insulin or use a medication that causes low blood sugar risk.

Another issue is that you ordered sensors but received a bill for the full amount instead of your 20 percent share. This usually means the supplier did not verify your coverage correctly before shipping. Call the supplier and ask them to resubmit the claim to Medicare with your correct deductible status. Do not pay the full bill until this is resolved.

If you have a Medicare Advantage plan and the supplier says your plan does not cover FreeStyle Libre, call your plan directly. The supplier may not be in-network with your plan, or the plan may have specific suppliers you must use. Your plan can tell you which suppliers are approved and what your cost will be.

Frequently Asked Questions

Does Medicare cover the FreeStyle Libre reader?

No, Medicare Part B does not cover the reader device. You must purchase it yourself, though FreeStyle offers discounts for Medicare beneficiaries. Some Medicare Advantage plans may cover the reader as an added benefit — call your plan to ask.

Can I get more than one sensor per month?

Medicare Part B covers only one sensor per month. If you need more, you pay out of pocket for the extras. Some Medicare Advantage plans may cover additional sensors, so check your plan documents.

What if my doctor says I do not need insulin?

Medicare requires either insulin injections at least once daily or a medication that carries hypoglycemia risk. If your doctor has not prescribed either, Medicare will not cover the sensor. Talk to your doctor about whether one of these treatments is appropriate for your diabetes management.

How long does it take to receive sensors after I order?

Most DME suppliers ship within 5 to 10 business days. Some ship faster. Ask the supplier for an estimated delivery date when you place your order. If you need sensors urgently, call multiple suppliers to find the fastest option.

Will my cost change if I switch Medicare Advantage plans?

Yes, different plans cover FreeStyle Libre differently. When you switch plans during open enrollment, review the new plan's coverage for glucose monitors before your coverage starts. Your copay, coinsurance, or whether the reader is covered may all change.