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CGM Frequently Asked Questions

How do Continuous Glucose Monitors (CGM) work?

  • It is very easy to use a CGM.  A small sensor is worn on the back of your arm, which is held in place by adhesive tape.  The sensor measures the glucose levels continuously in the interstitial fluid, which is the fluid that surrounds the cells.  It takes these readings continuously throughout the day and night.  The sensor sends real-time readings remotely (without a wire) to either a reader (or monitoring device) or an app on your smartphone.  The reader or app will then display your glucose data.

What CGM’s does Nationwide Medical, Inc. (NMI) carry?

  • At NMI, we offer the FreeStyle Libre 2 and Libre 3 systems, and the Dexcom G7.

Will my insurance cover my CGM supplies?

  • Medicare, Medicaid plans, and most insurance providers cover continuous glucose monitors and supplies.  There are many variables that determine what your insurance will cover.  Please contact us at 888-605-4755 for a free insurance benefit check to learn if your insurance will cover a CGM.  We can also provide you with information regarding the out of pocket costs your insurance will not cover.

If I inject insulin less than three times per day, can I still get a CGM?

  • Yes, the requirements for CGM are changing.  To qualify for a CGM, starting April 16, 2023, you must be treating diabetes with insulin (can be oral, subcutaneous injections, or using an insulin pump) or have documented level-2 hypoglycemia by your physician.

How can I receive help getting started with my CGM?

My Sensor fell off or it’s not working, what do I do?

  • Do NOT throw away a damaged or non-working sensor.  You will need to contact the manufacturer of the CGM to get a replacement.  For FreeStyle Libre 2 system, please contact the Abbott Customer Service team at (855)-632-8658.  For Dexcom G7 System, please contact Dexcom Technical Support team at (844)-832-1810.

Why do I need to authorize my re-supply order?

  • Insurance guidelines mandate beneficiaries must authorize their supply orders to confirm any changes in the physician’s Rx.  We also want to confirm how you are doing on the device, confirm correct contact information, and answer any questions you may have about your CGM device.  You can always reach out to us at 888-605-4755 with any re-supply questions you have.

Why do I need to see my doctor for my diabetes at least every 6 months?

  • Insurance guidelines require suppliers to prove beneficiaries continue to have a medical need to use the CGM device.  This medical need is required every 6 months.  This continuation of need must be documented by your physician in your chart notes and faxed to NMI at 866-354-0538.

Why did I receive an invoice for payment from Nationwide Medical, Inc. (NMI)?

  • Receiving an invoice from NMI indicates that your insurance did not pay 100% of the allowed amount for your CGM device.  Your insurance will provide you with an Explanation of Benefits (EOB) that outlines your financial responsibility.  NMI also receives a copy of your EOB and the amount shown on your invoice is what your insurance carrier has determined to be your financial responsibility.

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