Vitamin B12 Injection5000 mcg mL Injectable Sterile Solution VACCINE ADMINISTRATION: Know the Codes! Vaccine administration codes depend on route, age, and counseling not the vaccine product itself! 90460 Admin with counseling, <18 years (first or only Vitamin B 12 Injection for Animals, 3000 mcg mL, 100 mL Vial Prescription Medication for Pets CPT Code 99601: Home Infusion Specialty Drug Administration Per Visit (Up to 2 Hours) Vitamin B 12 Injection for Animals, 3000 mcg mL, 100 mL Vial Prescription Medication for Pets CPT codes for spinal injections and radiofrequency denervation