Is the FreeStyle Libre 3 Plus Covered by Medicare?

Last reviewed August 13, 2026 by the Medically Modern coverage team. Coverage rules change — always confirm with your plan.

The short answer: Medicare covers the FreeStyle Libre® 3 Plus the same way it covers every sensor in the FreeStyle Libre family — as Part B durable medical equipment (DME) under the Medicare glucose-monitor policy (LCD L33822). Both the sensors and the Libre 3 reader are eligible for reimbursement when you meet the criteria below, and Abbott has confirmed the 3 Plus carries the same Medicare coverage as the original Libre 3 it replaced.

There is no separate Medicare rule for the 3 Plus. If you qualified for a Libre sensor before, you qualify for this one; if you’re new to CGMs, the eligibility test is the same two-path test explained in our full Medicare coverage guide.

What is the FreeStyle Libre 3 Plus?

The Libre 3 Plus is Abbott’s smallest sensor and, since the original Libre 3 was discontinued in September 2025, the current top-of-line model in the US. It streams a glucose reading every minute to your phone or reader — no scanning required.

One Medicare-specific detail worth knowing: Medicare prescriptions must include both the sensors and the reader, and Abbott’s Medicare guidance says the reader must be used on some days each month — even if you mostly use the phone app. A good supplier will make sure your prescription is written correctly the first time.

Who qualifies for the Libre 3 Plus under Medicare

Medicare’s CGM criteria have two paths. You need a diabetes diagnosis (any type), plus one of the following:

• You use insulin — any insulin regimen counts, including basal-only. There is no minimum number of daily injections and no fingerstick-testing requirement.
• You have a history of problematic hypoglycemia — documented recurrent level 2 lows (glucose below 54 mg/dL) that persist despite treatment adjustments, or one level 3 low that required someone else’s help.

You also need a visit with your treating practitioner — in person or by Medicare-approved telehealth — within the 6 months before the order, and your practitioner attests that you’ve had sufficient training on the device. After you start, Medicare requires a follow-up visit every 6 months to keep coverage active; missed follow-ups are one of the most common reasons claims get denied.

Not sure where you land? Our quick eligibility check walks through the same questions in about a minute.

What you’ll pay for the Libre 3 Plus in 2026

Under Original Medicare, you first meet the Part B annual deductible — $283 in 2026 — and then pay 20% of the Medicare-approved amount, as long as your supplier accepts assignment. GoodRx estimates that 20% share works out to roughly $45 for a box of two sensors, or about $45–$55 per month without supplemental coverage.

Supplemental coverage can bring that lower:

• Medigap: Plan G covers the 20% coinsurance, which can bring your sensor cost to $0 out of pocket after the deductible, depending on your plan.
• Medicare Advantage: plans must cover CGMs at least as well as Original Medicare, and Abbott reports most Medicare Advantage patients pay $0 — but expect prior authorization, possible copays, and network-supplier rules that vary plan to plan.

For a full breakdown by plan type — including what the sensors cost without insurance — see our FreeStyle Libre cost guide.

Libre 3 vs. Libre 3 Plus on Medicare: what changed

If you were using the original Libre 3, here’s the situation: Abbott discontinued the original FreeStyle Libre 2 and Libre 3 sensors after September 30, 2025. Any remaining old sensors can be used until they expire, but pharmacies and suppliers can no longer fill prescriptions written for them.

The 3 Plus also works with the same FreeStyle Libre 3 app and Libre 3 reader you may already have, and it wears for up to 15 days per sensor. If you’re weighing it against the other current model, our Libre 2 Plus vs. 3 Plus comparison covers the differences that matter for coverage.

How to get the Libre 3 Plus through Medicare

1. See your doctor

   You need an in-person or Medicare-approved telehealth visit within 6 months before the order. Your chart should document your insulin use or qualifying hypoglycemia — that documentation is what Medicare audits.

2. Get the prescription written for the 3 Plus

   For Medicare, the order must include both the sensors and the reader, and it must name the Libre 3 Plus — old Libre 3 prescriptions can’t be filled.

3. Choose a Medicare-enrolled DME supplier

   Medicare bills CGMs under Part B DME, not the pharmacy drug benefit. Many major retail pharmacies aren’t enrolled DME suppliers and won’t submit Part B claims — which can leave you paying cash with no reimbursement. An enrolled supplier that accepts assignment caps your share at the deductible plus 20%.

4. Start your supply schedule

   Your supplier verifies benefits, collects the doctor’s paperwork, and ships sensors on Medicare’s monthly supply allowance — typically two 15-day sensors per 30 days, often shipped 90 days at a time. Keep up your 6-month doctor visits so coverage continues.

The step-by-step version, with what to do if something gets denied, is in our guide to getting FreeStyle Libre through insurance.

Frequently asked questions

Does Medicare require the Libre 3 reader, or can I use my phone?

Medicare requires the prescription to include both the sensors and the reader, and Abbott’s Medicare guidance states the reader must be used on some days each month. You can still use the FreeStyle Libre 3 app on a compatible smartphone for day-to-day readings alongside the reader.

How many Libre 3 Plus sensors does Medicare cover per month?

Each sensor lasts up to 15 days, so a 30-day supply is two sensors. Medicare pays for sensors through a monthly all-inclusive supply allowance (HCPCS code A4239) — one unit covers 30 days, and suppliers can bill up to three units per 90 days, which is why many ship a 90-day supply at a time. If a sensor fails early, the allowance is all-inclusive: your supplier furnishes replacements for that period at no extra charge.

Can I use the Libre 3 Plus with an insulin pump on Medicare?

The Libre 3 Plus integrates with three automated insulin delivery systems in the US: the Beta Bionics iLet, the Tandem t:slim X2 (added via a free software update in October 2025), and the Omnipod 5 (added June 2026). Medicare’s CGM criteria are the same whether or not you use a pump — insulin treatment itself is a qualifying path. Insulin pumps have their own separate Medicare coverage rules, so talk with your doctor and supplier about the pump side.

Can I switch from the Libre 2 Plus to the Libre 3 Plus on Medicare?

Yes. Both sensors are covered under the same Medicare Part B rules, so switching doesn’t change your eligibility. Your doctor writes a new prescription for the 3 Plus, and your supplier updates your file. Keep in mind the systems aren’t interchangeable — the Libre 2 Plus works with the Libre 2 app or reader, while the 3 Plus uses the Libre 3 app or reader.

Does Medicare Advantage cover the FreeStyle Libre 3 Plus?

Medicare Advantage plans must cover CGMs at least as well as Original Medicare, and Abbott reports most Medicare Advantage patients pay $0 for Libre systems. Plans commonly add prior authorization, copays, and in-network supplier requirements, though, so confirm the details with your plan — or have a supplier verify your benefits for you. More answers are in our FAQ.

Sources: CMS LCD L33822 (Glucose Monitors), Medicare.gov, Federal Register (2026 Part B rates), Abbott transition notice, Abbott Medicare FAQ, GoodRx.

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