Billing and Coding: Implantable Continuous Glucose Monitors (I-CGM)

This billing and coding article provides CPT guidance for implantable continuous glucose monitors: use CPT 0446T for insertion of 90-, 180-, or 365-day I-CGM sensors, CPT 0447T for removal, and CPT 0448T for removal with immediate replacement. Replacement of sensors (including replacing a 90-day with a 365-day sensor) is allowable for patient discomfort or need for a different anatomic site, end of functional life, or device malfunction; documentation requirements and LCD L38617 reasonable-and-necessary criteria must be met and all records retained and signed by the treating provider.

"Report CPT 0446T for creation of a subcutaneous pocket with insertion of an implantable interstitial glucose sensor (I-CGM), including system activation and patient training for 90-day, 180-day, or..."

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