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, Does Procedure J3420 Require Prior Authorization? Cobalamin (vitamin B12) and Folate Deficiency Province of British Columbia CPT Code 62321 Description, Examples & Reimbursement Guide CPT Code List MVP Health Care