Infusion Therapy Billing Guide: CPT Codes, Modifiers & Audit Risks Acuity Health Solutions 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, Methio b12 250 ml Methio b12 250 ml Coding Infusions, Hydration, and Injections AAPC Knowledge Center CPT Code 96372: Description, Usage, and Billing Guidelines (2025)