2017 Interventional Radiology CPT Codes Update HAP USA Injection and Infusion Coding: What You NEED to Know! Not all injections are created equal and in the CPT Medicine section, the difference between an IV infusion, an IM injection, CPT Code 20610: Joint Injection and Aspiration Billing Guide Cyanocobalamin 1,000 mcg mL Injection 30 mL McKesson CPT Code 90471: Immunization Administration Billing Guide CPT Code 96372: Billing Guide, Modifiers and Reimbursement 2026