MedicaidPrior AuthHigh impact
Reminder About Use of C Codes for Certain Advanced Imaging Services
Connecticut Medicaid (HUSKY Health)·CT · Radiology, Diagnostic Imaging·Provider Bulletin
We identified it
Jun 20, 2026
Summary
Connecticut Medicaid requires outpatient hospitals to use specific HCPCS 'C' codes instead of CPT codes when requesting prior authorization for advanced imaging services including MRI and MRA procedures. Hospitals must obtain valid authorization using the correct C codes before performing these services.
Action Required
Immediately: Outpatient hospital billing teams must update prior authorization requests to use the specified HCPCS 'C' codes instead of CPT codes for MRI and MRA services. Update billing system workflows to map CPT codes 74185, 77058, 77059, 71555, 73725, 72198, 72159, and 73225 to their corresponding C codes for Connecticut Medicaid authorization requests. Verify valid authorization is on file using correct C code before performing services to prevent claim denials.