Cyanocobalamin 1,000 mcg mL Injection 1 mL McKesson Medical Coding Types Of Injections Coding Clarified Vitamin B12 Monthly Injection Dose: Typical Dosages & Administration Methods Liv Hospital Vitamin B 12 Cyanocobalamin Injection 1000 mcg mL Med Plus Physician Supplies CPT Code 20610: Joint Injection and Aspiration Billing Guide The HCPCS modifier EJ is used for billing the subsequent doses in a defined course of therapy. It is not used for the first dose or injection of a series. Common applications