Last reviewed August 13, 2026 by the Medically Modern coverage team. Coverage rules change — always confirm with your plan.
The FreeStyle Libre® 2 Plus and FreeStyle Libre 3 Plus are the only two sensors in Abbott’s current US prescription lineup, and they have more in common than not. Both wear for up to 15 days, both need a 60-minute warm-up before showing readings, both are indicated for ages 2 and up, and both meet the iCGM accuracy class. Just as important for anyone reading a coverage site: Medicare and most insurance plans cover the two sensors under the same rules, so picking one over the other usually doesn’t change whether you’re covered.
The genuine differences come down to four things: size (the Libre 3 Plus is Abbott’s smallest sensor), how readings arrive (the Libre 3 Plus streams a new reading every minute), which app and reader each sensor works with, and which automated insulin delivery (AID) pumps each pairs with. Here’s the side-by-side.
Libre 2 Plus vs Libre 3 Plus: side-by-side
| Feature | FreeStyle Libre 2 Plus | FreeStyle Libre 3 Plus |
|---|---|---|
| Wear time | Up to 15 days | Up to 15 days |
| Warm-up | 60 minutes | 60 minutes |
| Age indication | Ages 2 and up | Ages 2 and up |
| Accuracy class | iCGM | iCGM |
| Size | Larger of the two current sensors | Abbott’s smallest sensor |
| Minute-by-minute streaming | Readings via the FreeStyle Libre 2 app or Libre 2 reader | Yes — a new reading every minute |
| Phone app | FreeStyle Libre 2 app | FreeStyle Libre 3 app |
| Handheld reader | FreeStyle Libre 2 reader | FreeStyle Libre 3 reader |
| Insulin pump (AID) compatibility | Omnipod 5 | Omnipod 5, Tandem t:slim X2, Beta Bionics iLet |
| Insurance & Medicare | Covered under the same CGM rules | Covered under the same CGM rules |
Apps aren’t interchangeable: the Libre 2 Plus works with the FreeStyle Libre 2 app or Libre 2 reader, and the Libre 3 Plus works with the FreeStyle Libre 3 app or Libre 3 reader. If you switch sensors, you’ll switch apps (or readers) too.
If you use — or plan to use — an insulin pump
Pump compatibility is where the two sensors really part ways. The Libre 3 Plus now pairs with three AID systems. The Beta Bionics iLet was the first US pump to connect to it, launching with Libre 3 Plus integration on October 30, 2024. Tandem’s t:slim X2 followed on October 29, 2025 — preloaded on new pumps and available to existing t:slim X2 users through a free software update. And on June 3, 2026, Insulet began rolling out Omnipod 5 compatibility with the Libre 3 Plus alongside its enhanced algorithm.
The Libre 2 Plus pairs with Omnipod 5, an integration cleared in December 2024 and rolled out through 2025. One gap worth knowing: Tandem’s smaller Mobi pump does not integrate with the Libre 3 Plus yet as of August 2026. If you’re set on a t:slim X2 or an iLet, that points you toward the Libre 3 Plus — but sensor and pump choices should be made together with your prescriber, since the two have to work as a pair.
What happened to Libre 2 and Libre 3?
Abbott discontinued the original FreeStyle Libre 2 and Libre 3 sensors after September 30, 2025. Sensors you still have on hand can be used until their expiration dates, but pharmacies and suppliers can no longer fill prescriptions written for the old models. To keep getting sensors, you need a new prescription written specifically for the FreeStyle Libre 2 Plus or Libre 3 Plus.
The good news is that coverage carries over. Abbott confirms the Plus sensors have the same Medicare coverage status as the sensors they replaced, and the Plus models simply took the originals’ place in the lineup. If your plan covered your Libre 2 or Libre 3, the matching Plus sensor is the natural next step — your doctor just needs to send an updated prescription. Our guide to getting FreeStyle Libre through insurance walks through that process step by step.
Not sure which sensor your plan covers?
We’ll verify your benefits and tell you what your insurance prefers — free, fast, and no obligation.
Which one should you get?
For most people this is less a spec-sheet decision than a two-part conversation. The first part is with your doctor: which sensor fits how you manage your diabetes, whether you use a compatible smartphone or would rely on a reader, and — if a pump is in the picture — which sensor your pump supports. Those are clinical and practical questions your prescriber is best placed to answer.
The second part is with your insurance. Plans often prefer one CGM brand or model on their formulary, and a mismatch between what’s prescribed and what’s preferred is one of the most common reasons a CGM claim gets denied. The fix is usually simple — switch to the preferred sensor or file a formulary exception — but it’s far easier to check before the prescription is written than to appeal after a denial.
Shortcut: a supplier can look this up for you. When Medically Modern runs a coverage check, the team verifies which sensor your specific plan covers and what your out-of-pocket share would look like, before anything is ordered. The eligibility rules are the same for both sensors, so you can also see if you qualify first.
How insurance covers both sensors
Medicare covers both the Libre 2 Plus and Libre 3 Plus as Part B durable medical equipment. The criteria don’t depend on which model you pick: you need a diabetes diagnosis, either insulin treatment (any amount) or a documented history of problematic hypoglycemia, and a visit with your treating provider within the 6 months before the order. In 2026, you pay 20% coinsurance after the $283 Part B deductible when your supplier accepts assignment, and monthly sensor supplies bill under a single all-inclusive allowance. The details are in our Medicare coverage guide.
Private insurance also treats the two sensors alike in most cases. Abbott reports that more than 95% of commercial plans cover FreeStyle Libre systems, and most covered patients pay $0–$20 per month for sensors — though prior authorization and brand preferences vary by plan. See our private insurance guide for how the pharmacy and DME benefit channels work, and the cost guide for what people typically pay under each type of plan.
Frequently asked questions
Is the FreeStyle Libre 3 Plus covered by Medicare?
Yes. Medicare covers the Libre 3 Plus sensor and reader as Part B durable medical equipment for people who qualify: a diabetes diagnosis plus either insulin treatment (any amount) or a documented history of problematic hypoglycemia, along with a provider visit within the 6 months before the order. Your prescription must include both the reader and sensors, and Medicare expects the reader to be used on some days each month. In 2026 you pay 20% coinsurance after the $283 Part B deductible if your supplier accepts assignment; Abbott states most Medicare Advantage patients pay $0. Our Libre 3 Plus Medicare guide covers this in detail.
Can I still get the original Libre 2 or Libre 3?
No. Abbott discontinued both original sensors after September 30, 2025. Sensors you already have can be used until their expiration dates, but new fills require a prescription written for the Libre 2 Plus or Libre 3 Plus.
Do both sensors work with insulin pumps?
Yes, both are AID-compatible, but with different pumps. The Libre 3 Plus works with the Beta Bionics iLet, the Tandem t:slim X2, and Omnipod 5. The Libre 2 Plus works with Omnipod 5. Tandem’s Mobi pump does not integrate with the Libre 3 Plus as of August 2026.
Do I need a new prescription for a Plus sensor?
Yes. Prescriptions written for the original Libre 2 or Libre 3 can’t simply be swapped at the pharmacy — your prescriber needs to write a new prescription for the Plus version. If you order through Medically Modern, the team handles that paperwork with your doctor’s office as part of the free coverage check.
Does insurance cover one sensor better than the other?
Medicare covers both under the same Part B rules. Commercial plans generally cover both as well, but many prefer one CGM brand or model on their formulary — a mismatch can trigger a denial that’s usually fixable by switching to the preferred sensor or filing a formulary exception. A benefits check before you fill the prescription avoids the surprise.
Sources: Abbott FreeStyle Libre transition notice, Abbott FreeStyle Libre 3 product page, Abbott support: Libre 3 Plus Medicare coverage, CMS LCD L33822, Medicare.gov, Beta Bionics, Tandem Diabetes Care, Insulet/Omnipod.