In This Guide
More than 33% of Medicare beneficiaries have diabetes—making diabetes management one of the most heavily used benefit areas in the entire program. Medicare has robust coverage for diabetes care, but it is split across Part B (for supplies and equipment) and Part D (for most medications), and quantity limits vary based on how you manage your diabetes. Here’s the complete breakdown.
1. Blood Glucose Monitors and Test Strips
Medicare Part B covers blood glucose monitors (glucometers) and their supplies as durable medical equipment (DME). The monitor itself is covered at 80% after your Part B deductible. You pay 20% coinsurance.
Test strip and lancet quantity limits differ based on your insulin use:
| Patient Type | Test Strips | Lancets | Frequency |
|---|---|---|---|
| Insulin users (injections or pump) | Up to 300 strips | Up to 300 lancets | Per 3 months |
| Non-insulin-treated diabetes | Up to 100 strips | Up to 100 lancets | Per 3 months |
| Insulin users requiring more frequent testing (documented medical necessity) | More than 300 strips possible | More than 300 lancets possible | With prior authorization |
Note on meter brand: Medicare covers the meter, but the meter must match the test strips your supplier provides on the Medicare contract. Some lower-cost contracted strips may not be the same brand as your current meter. If brand continuity matters (e.g., you use a specific app ecosystem), confirm your supplier’s contracted strip brands before switching.
2. Continuous Glucose Monitors (CGM)
This is one of Medicare’s most significant diabetes coverage expansions of the past several years. Medicare Part B now covers CGM devices and their supplies—sensors, transmitters, and receivers—as therapeutic continuous glucose monitors (CGMs) classified as DME.
Currently covered CGM systems under Medicare Part B include the following:
- Dexcom G7 (and G6)
- Abbott FreeStyle Libre 2 and 3
- Medtronic Guardian 4
To qualify for Medicare CGM coverage under Part B, you must meet all of the following:
- Have diabetes (Type 1 or Type 2)
- Be treated with insulin (multiple daily injections or an insulin pump) OR have documented hypoglycemia unawareness or recurrent hypoglycemia
- Have a face-to-face visit with the ordering physician within 6 months before the CGM order
- Your supplier must be a Medicare-enrolled DME supplier who handles CGM devices
Non-insulin-treated Type 2 diabetes patients may also qualify if their physician documents that CGM is medically necessary for diabetes management—CMS has progressively expanded CGM access beyond insulin-only patients in recent years.
Under Part B, you pay 20% coinsurance on the Medicare-approved amount for the CGM receiver (one-time) and for sensors (ongoing, typically monthly). CGM sensors are ongoing consumables and are resupplied through your Medicare-enrolled DME supplier, not a traditional pharmacy.
3. Insulin Coverage and the $35 Monthly Cap
How insulin is covered depends on how you use it:
| Insulin Use | Covered Under | Cost Cap |
|---|---|---|
| Injectable insulin (pen or vial) — not used with a pump | Medicare Part D | $35/month per insulin product |
| Inhaled insulin (Afrezza) | Medicare Part D | $35/month cap applies |
| Insulin used with a covered insulin pump | Medicare Part B (as DME supply) | $35/month cap applies |
4. Insulin Pumps
Medicare Part B covers insulin pumps as durable medical equipment for patients with diabetes who require an intensive insulin regimen. Coverage criteria include:
- Diagnosis of diabetes requiring insulin therapy
- Documentation that the patient has been treated by multiple daily insulin injections and has not achieved adequate glycemic control
- A face-to-face visit and comprehensive diabetes evaluation by the treating physician
- The patient has completed diabetes education
Medicare covers both traditional insulin pumps and, since 2023, the Omnipod (tubeless, pod-based insulin delivery). The pump device is covered at 80% after the Part B deductible. Insulin used with the pump is then covered under Part B at the $35/month cap. Pump supplies (infusion sets, reservoirs) are covered as Part B DME at 80%.
5. Therapeutic Diabetic Shoes
Medicare Part B covers one pair of therapeutic diabetic shoes plus inserts per calendar year for Medicare beneficiaries with diabetes who have a documented foot condition. This is an underused benefit — many eligible patients don’t know it exists.
Coverage includes:
- One pair of extra-depth shoes per year (or one pair of custom-molded shoes if standard shoes cannot accommodate foot deformities)
- Three pairs of custom-molded inserts per year with the extra-depth shoes, or two pairs with custom shoes
To qualify, all three conditions must be met:
- You have diabetes
- A doctor (not a podiatrist) who treats your diabetes certifies the medical necessity
- A podiatrist, orthotist, prosthetist, or pedorthist fits and provides the shoes
You pay 20% coinsurance after the Part B deductible. The Medicare-approved amount for diabetic shoes is typically $140–$300—so your 20% share is $28–$60 for a year’s supply of therapeutic footwear.
6. Diabetes Self-Management Training (DSMT)
Medicare covers Diabetes Self-Management Training (DSMT)—structured education sessions with a certified diabetes educator that teach blood sugar monitoring, medication management, meal planning, foot care, and lifestyle strategies. Coverage includes:
- Initial training: Up to 10 hours in the first year of diagnosis (or first year of Medicare coverage for diabetes)
- Follow-up training: 2 hours per year in subsequent years
DSMT sessions are covered at 80% after the Part B deductible when provided by an accredited DSMT program. Many hospitals, medical centers, and outpatient clinics offer accredited programs. Medical Nutrition Therapy (MNT) — individual counseling with a registered dietitian specifically for diabetes — is also covered under Part B at 80%.
7. Diabetic Eye and Foot Exams
| Service | Coverage |
|---|---|
| Annual diabetic retinopathy eye exam | Part B — 80% after deductible. One exam per year by an eye doctor. |
| Diabetic foot exam | Part B — 80% after deductible. Up to 4 exams per year by a podiatrist for patients with peripheral neuropathy or vascular disease due to diabetes. |
| Glaucoma screening | Part B — 100% covered annually (diabetes is a high-risk condition). |
| Hemoglobin A1C (lab test) | Part B — covered as medically necessary lab work. |
| Diabetes blood tests (fasting glucose, etc.) | Part B—covered as preventive screening if risk factors are present. |
8. Frequently Asked Questions
Does Medicare cover the FreeStyle Libre?
Yes. The Abbott FreeStyle Libre 2 and FreeStyle Libre 3 are both covered under Medicare Part B as CGM devices. The original FreeStyle Libre (first-generation) is also still covered. You need a prescription from your treating physician and must obtain it through a Medicare-enrolled DME supplier, not a regular pharmacy prescription channel.
Does Medicare cover Ozempic or Trulicity for diabetes?
Yes. GLP-1 receptor agonists prescribed for Type 2 diabetes — including Ozempic (semaglutide), Trulicity (dulaglutide), Victoza (liraglutide), and Rybelsus (oral semaglutide) — are covered under Medicare Part D subject to your plan’s formulary tier and cost-sharing. They count toward the $2,100 annual Part D out-of-pocket cap.
Does Medicare cover a smartwatch or app that monitors blood sugar?
Not directly. Smartwatch-based glucose monitoring that does not involve a medically prescribed sensor/transmitter system is not currently covered by Medicare Part B as DME. Only FDA-cleared CGM systems prescribed as therapeutic devices and supplied through a Medicare-enrolled DME supplier are covered.
Does Medicare cover Metformin?
Yes. Metformin (generic) is one of the most common oral diabetes medications and is a Tier 1 drug on virtually every Medicare Part D formulary — typically available for $0–$5/month copay. Brand-name Glucophage is covered at a higher tier.
Does Medicare Cover Prescription Drugs? (Part D Guide) • Does Medicare Cover Lab Tests and Blood Work? • Does Medicare Cover It? Complete Guide
This article is for informational purposes only. CGM coverage criteria and DME supplier requirements are enforced by your Medicare Administrative Contractor and may vary. The $35 insulin cap and Part D rules are governed by the Inflation Reduction Act. Verify your specific coverage at Medicare.gov or call 1-800-MEDICARE.
