People with diabetes can use continuous glucose monitors (CGMs) to make tracking their blood sugar levels easier.
Instead of drawing blood multiple times per day, a person continuously wears a sensor that sends frequent blood sugar readings to a smartphone app. Devices can also link to insulin pumps and separate monitors.
Medicare covers diabetes care, and Part B should cover several types of CGMs for those with low blood sugar, also called hypoglycemia. Part B can cover Dexcom G7 or its earlier version, the Dexcom G6.
Typically, Medicare Part B covers Food and Drug Administration (FDA)-approved CGMs, including the Dexcom G7.
Original Medicare Part B can cover Dexcom, as Medicare considers CGMs as durable medical equipment (DME).
Medicare updated specific CGM eligibility rules in 2023 to make the devices more widely available. These rules now mean that a person can receive any type and amount of insulin or have a history of low blood sugar.
People must have an in-person or telehealth appointment with their doctor or healthcare professional within 6 months of ordering their CGM.
Medicare no longer requires routine finger-prick blood sugar testing.
Additionally, Medicare also requires a:
- prescription from a Medicare-approved physician or healthcare professional
- person’s CGM training completion
- doctor or healthcare professional who provided the prescription to monitor CGM use regularly
If a person has a Medicare Advantage (Part C) plan, the same rules apply to them as those with Original Medicare (parts A and B).
As private insurers administer Medicare Advantage plans, people can check with their plan provider to find out whether their coverage now includes the newest Dexcom version, the G7.
Diabetes Warehouse offers one Dexcom G7 sensor for $169.99. However, every supplier or pharmacy may charge differently.
In 2025, after a person meets the Part B deductible of $257, the plan can typically pay 80% of CGM costs. People must also pay a Part B monthly premium, which begins at $185 and can increase based on their income.
With Medicare Advantage plans, a person’s monthly premiums, deductibles, copayments, and coinsurance can vary by plan type, plan provider, and location.
According to the Centers for Medicare & Medicaid Services (CMS), the average monthly Medicare Advantage plan premium in 2025 is around $17. However, they must still pay the Part B premium to Medicare directly.
Some people may qualify for a free or reduced-price Dexcom CGM through the manufacturer’s patient assistance program (PAP). However, this is only available to those with type 1 diabetes and a specific income level.
Additionally, most people with type 1 or type 2 diabetes who have private health insurance, either personally or via an employer, could be eligible for the Dexcom G7 free trial.