| Sensor Wear Time | 10 days + 12-hr grace period |
| Warm-Up Time | 30 minutes |
| Accuracy (MARD) | 8.2% |
| Medicare Part | Part B (DME) |
| Patient Cost Share | 20% after deductible |
| Prior Authorization | Not required |
| Calibration Required | No fingerstick needed |
Key Takeaways
- Medicare covers Dexcom G7 as Durable Medical Equipment (DME) under Part B
- Eligible beneficiaries pay 20% coinsurance after the Part B deductible
- You must meet specific testing and prescriber requirements to qualify
- Prior authorization is not required for Dexcom G7 under Medicare
- Supplies are obtained through Medicare-approved DME suppliers
Overview
The Dexcom G7 Continuous Glucose Monitor (CGM) is covered by Medicare in 2026 for qualifying beneficiaries with diabetes. Coverage falls under Medicare Part B as a DME benefit, meaning patients typically pay 20% of the Medicare-approved amount after meeting the annual Part B deductible ($257 in 2025, subject to annual adjustment).
Eligibility Requirements
To qualify for Medicare coverage of the Dexcom G7, beneficiaries must meet all of the following criteria:
- Diagnosed with diabetes mellitus (Type 1 or Type 2)
- Treated with insulin (any insulin regimen qualifies as of 2023 CMS expansion)
- Have a face-to-face visit with their prescribing physician within the past 6 months
- Obtain a written order from a Medicare-enrolled provider
What Medicare Covers
| Item | Coverage |
|---|---|
| Dexcom G7 Sensor (10-day wear) | Part B DME β 80% after deductible |
| Dexcom G7 Receiver | Covered as separate DME item |
| Transmitter | Built into G7 sensor β included |
The G7's all-in-one disposable design (transmitter integrated into sensor) simplifies billing compared to older CGM systems.
How to Get Dexcom G7 Through Medicare
Step-by-Step Process
- Step 1: See your doctor for a face-to-face diabetes evaluation
- Step 2: Request a written CGM prescription specifying Dexcom G7
- Step 3: Choose a Medicare-enrolled DME supplier
- Step 4: Supplier verifies eligibility and processes your claim
- Step 5: Receive sensors on a regular supply schedule (typically monthly)
Cost Breakdown 2026
With standard Medicare Part B, after meeting your deductible you pay approximately 20% of the approved amount. Beneficiaries with Medicare Supplement (Medigap) plans may have little to no out-of-pocket cost. Medicare Advantage plans may have different cost-sharing β always verify with your plan.
Dexcom G7 Specs
- Wear time: 10 days + optional 12-hour grace period
- Warm-up time: 30 minutes (fastest FDA-approved CGM)
- Accuracy (MARD): 8.2%
- Compatible with smartphones and dedicated receiver
- No fingerstick calibration required
MDS Diabetes Tip
MDS Diabetes offers Medicare-covered CGM supplies including Dexcom G7 sensors through our network of DME fulfillment services. Our specialists can help verify your Medicare eligibility and coordinate with your physician to minimize delays. Visit mdsdiabetes.com to check your coverage today.