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

This billing and coding article provides coding guidance for implantable continuous glucose monitors (I-CGM) and defers coverage and medical necessity decisions to LCD L38617. Use CPT 0446T for insertion of 90-, 180-, or 365-day sensors, CPT 0447T for removal, and CPT 0448T for removal with immediate replacement at a different site; do not report 0446T with 0447T or 0448T. Maintain legible medical records with patient identification and provider signature, and ensure records support the ICD-10-CM and CPT/HCPCS codes billed.

"Coverage for implantable continuous glucose monitor (I-CGM) procedures is allowed when reasonable and necessary per Local Coverage Determination L38617."

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