j code for b12 injection HCPCS J3420: Injection, Vitamin B-12 (Cyanocobalamin), up to 1,000 mcg per Unit Medical Coding Types Of Injections

Cyanocobalamin is quantitatively and rapidly absorbed from intramuscular and subcutaneous sites of injection

Within 48 hours after injection of 100 or 1,000 mcg of vitamin B 12, 50 to 98% of the injected dose may appear in the urine

An intradermal test dose is recommended before Cyanocobalamin Injection, USP is administered to patients suspected of being sensitive to this drug

Carcinogenesis, Mutagenesis, Impairment of Fertility Long term studies in animals to evaluate carcinogenic potential have not been done

Deficiency has been recognized in infants of vegetarian mothers who were breast fed, even though the mothers had no symptoms of deficiency at the time

Pregnancy Adequate and well-controlled studies have not been done in pregnant women