Continuous Glucose Monitors – What They Are and Who Can Use Them

September 19, 2025

Managing diabetes just got a little smarter.

Continuous Glucose Monitors (CGMs) are small, wearable devices that provide a real-time look at your blood sugar levels—day and night. These sensors are typically worn on the back of the arm or abdomen and inserted just under the skin. From there, they measure glucose in the fluid between your cells and send readings to a display device such as a smartphone, insulin pump, or handheld monitor.

Key Features of CGMs:

• Track glucose levels automatically—up to 288 readings per day
• Help you spot patterns, trends, and potential issues early
• Most models last 10 to 15 days before needing to be changed
• Some even send alerts when your blood sugar is rising or falling too fast

Who qualifies for a CGM?

• Most commercial insurance plans cover CGMs for people with a diabetes diagnosis
• Medicare and Medicaid may cover CGMs if the user:
• Has a documented diabetes diagnosis
• Is on at least one daily insulin injection or has a history of low blood sugars

JCHC’s Diabetes Education Program, led by Amy Martin, RN, CDCES, helps patients understand how to use these devices and determine whether they qualify based on their insurance and medical history. Our program is certified by the American Diabetes Association and the State of Iowa, and covered by most plans.

To schedule an appointment, call the JCHC Clinics at 641-472-4156.

Sources:

• Cleveland Clinic. (2023). How Continuous Glucose Monitoring Works. https://health.clevelandclinic.org/continuous-glucose-monitoring
• Centers for Medicare & Medicaid Services. (2023). Medicare Coverage of Continuous Glucose Monitors (CGMs). https://www.cms.gov/newsroom/fact-sheets/medicare-coverage-continuous-glucose-monitors-cgms