Medicare covers Freestyle Libre 3 under Part B, but only if your doctor prescribes it and you meet specific medical requirements

Freestyle Libre 3 is a continuous glucose monitor (CGM) — a small sensor worn on your arm that checks your blood sugar throughout the day without fingerstick tests. Medicare Part B covers it as durable medical equipment, which means you pay 20% of the approved amount after you meet your Part B deductible. The manufacturer, Abbott, also offers a patient information program that can reduce or eliminate your out-of-pocket costs if your income is below certain thresholds.

Coverage is not automatic. Your doctor must write a prescription stating that you have diabetes and that the device is medically necessary. Medicare also requires that you have tried other glucose monitoring methods first — usually a standard blood glucose meter — or that your doctor documents why Freestyle Libre 3 is the right choice for you instead.

Key Takeaways

  • Medicare Part B covers Freestyle Libre 3 as durable medical equipment, and you pay 20% of the approved amount after your deductible.
  • Your doctor must prescribe the device and document that you have diabetes and that it is medically necessary for your care.
  • You will need to order through a Medicare-approved supplier, not directly from Abbott, for the claim to process correctly.
  • Abbott's patient information program can cover your 20% coinsurance if your household income meets their limits, which vary by state.
  • Coverage typically begins after your doctor's prescription is sent to the supplier and the supplier verifies your Medicare benefits.

What Medicare Part B actually pays for Freestyle Libre 3

Medicare Part B covers the sensor itself and the reader device (the small handheld scanner). The approved amount varies by region but is typically around $100 to $150 per sensor. Since sensors last 14 days, you would receive four sensors per month under Medicare's coverage rules. You pay 20% of what Medicare approves, not 20% of what Abbott charges — the approved amount is usually lower than the retail price.

You must use a Medicare-approved durable medical equipment (DME) supplier to order your sensors. These suppliers bill Medicare directly and send the sensors to your home. If you order directly from Abbott or use a non-approved supplier, Medicare will not pay, and you will owe the full retail cost. Your doctor's office can tell you which suppliers in your area are Medicare-approved, or you can search the Medicare supplier directory on Medicare.gov.

Medical requirements your doctor must document

Medicare requires your doctor to show that you have diabetes — either Type 1 or Type 2 — and that continuous glucose monitoring is medically necessary for you. This usually means one of the following: you use insulin, your blood sugar is difficult to control, you have frequent low blood sugar episodes that you do not feel coming on, or you are pregnant with diabetes.

Your doctor may also need to document that you have already tried standard fingerstick glucose monitoring and that it is not working well enough for you, or that there is a medical reason you cannot use fingerstick testing. Some doctors can skip this step if they believe Freestyle Libre 3 is clearly the right first choice — for example, if you have severe arthritis that makes fingersticks painful. Ask your doctor whether they think Medicare will see your situation as meeting these requirements before they submit the prescription.

How to order through Medicare and what happens next

Your doctor writes a prescription for Freestyle Libre 3 and sends it to a Medicare-approved DME supplier of your choice. You can ask your doctor for a recommendation, or search for suppliers near you on Medicare.gov. Call the supplier and give them your Medicare number and the prescription. The supplier will verify your coverage, tell you what your 20% coinsurance will be, and ask for your shipping address.

The supplier sends your first shipment of sensors and the reader device. This usually takes 5 to 10 business days. The supplier bills Medicare directly. You will receive an Explanation of Benefits (EOB) from Medicare showing what they paid and what you owe. Keep this document — you may need it for your tax records or if you want to dispute a charge.

After your first shipment, the supplier will automatically send you four sensors per month on a schedule. You can pause or cancel at any time by calling the supplier. If your prescription expires, your doctor will need to renew it — usually once per year — for the supplier to keep sending sensors.

Abbott's patient information program and other ways to lower your costs

Abbott runs a program called the Freestyle Libre Patient information Program that can pay your Medicare coinsurance (the 20% you owe) if your household income is at or below 200% to 300% of the federal poverty level, depending on your state. You explore directly to Abbott, not through Medicare. You will need to provide proof of income, your Medicare information, and your doctor's prescription. Abbott typically responds within 5 to 10 business days.

If you may have access to, Abbott pays the supplier directly for your coinsurance, and you receive your sensors at no cost. If your income is slightly above the limit, Abbott may offer a discount on the coinsurance instead of covering it fully. You can reach Abbott's program by calling 1-844-LIBRE-US (1-844-542-7387) or visiting their website.

Some state Medicaid programs also cover Freestyle Libre 3 if you are may be able to access for both Medicare and Medicaid (called "dual may be able to access"). If this applies to you, Medicaid may cover costs that Medicare does not, including the 20% coinsurance. Contact your state Medicaid office to ask whether they cover this device.

What to do if Medicare denies your claim

If the supplier tells you that Medicare denied your claim, ask them for the specific reason. Common reasons include: your doctor's prescription did not include enough medical detail, you do not meet Medicare's medical requirements, or the supplier submitted the claim incorrectly. The supplier can often resubmit with more information from your doctor.

You also have the right to appeal. Ask the supplier for a copy of the denial notice, which will explain how to file an appeal with Medicare. You have 120 days from the date of the denial to appeal. If you believe the denial is wrong, your doctor can write a letter to Medicare explaining why Freestyle Libre 3 is medically necessary for you. Many appeals succeed when the doctor provides additional clinical detail.

Switching from another glucose monitor to Freestyle Libre 3

If you currently use a different continuous glucose monitor that Medicare covers — such as Dexcom or Medtronic — you can switch to Freestyle Libre 3. You will need a new prescription from your doctor. Some suppliers can coordinate the switch so that your old device stops and your new one begins around the same time, avoiding a gap in monitoring.

Medicare does not cover more than one CGM at a time, so you cannot have overlapping prescriptions. If you want to try Freestyle Libre 3 before fully switching, you could purchase one month out of pocket while you continue your current device, then switch to Medicare coverage once you are sure it works for you. Talk to your doctor and your current supplier about the best way to make this transition.

Frequently Asked Questions

Do I have to pay anything upfront before Medicare processes my claim?

No. The Medicare-approved supplier bills Medicare directly. You may owe your 20% coinsurance when the sensors arrive, or the supplier may bill you later after Medicare processes the claim. If you may have access to for Abbott's patient information program, you typically owe nothing.

What if I have a Medigap or Medicare Advantage plan instead of Original Medicare?

Coverage rules differ by plan. Medigap plans follow Original Medicare's coverage, so Freestyle Libre 3 should be covered the same way. Medicare Advantage plans set their own rules — some cover it, some do not, and some require prior approval from the plan. Call your plan's customer service number to ask whether Freestyle Libre 3 is covered before you ask your doctor for a prescription.

Can my doctor submit the prescription electronically to the supplier?

Yes. Most Medicare-approved suppliers accept electronic prescriptions from doctors' offices. Ask your doctor's office whether they can send it electronically, or provide them with the supplier's fax number or find email address. Electronic submission is usually faster than paper.

What happens if I lose or damage a sensor before the 14 days are up?

Contact your supplier and explain what happened. Some suppliers will replace a damaged sensor at no cost if it is clearly a manufacturer defect. If you lost it or damaged it yourself, the supplier may charge you for a replacement, or you may need to wait for your next scheduled shipment. Abbott's warranty covers manufacturer defects but not user damage.

Do I need to see an endocrinologist, or can my primary care doctor prescribe Freestyle Libre 3?

Your primary care doctor can prescribe it. You do not need a specialist. However, if your primary care doctor is unfamiliar with continuous glucose monitors, they may feel more confident prescribing if you bring information about the device or ask them to consult with an endocrinologist. Either way, the prescription comes from your doctor and goes to the supplier.