j code for b12 injection CPT Guide 2026 Compounded Cyanocobalamin (Vitamin B12) Injection

Anaphylactic shock and death have been reported after parenteral vitamin B 12administration

Cyanocobalamin appears as dark red crystals or as an amorphous or crystalline red powder

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

Hematocrit, reticulocyte count, vitamin B 12, folate and iron levels should be obtained prior to treatment

The vitamin B 12 coenzymes are very unstable in light

Patients with Normal Intestinal Absorption: Where the oral route is not deemed adequate, initial treatment similar to that for patients with pernicious anemia may be indicated depending on the severity of the deficiency