what happens if b12 injections don't work Vitamin Injection Side Effects and Safety Vitamin B12 Deficiency - Harvard

Conditions such as atrophic gastritis (thinning of the stomach lining), Pernicious anemia (which makes it harder for your body to absorb Vitamin B12), Intestinal diseases such as crohns disease, celiac disease, bacterial growth and immune system disorders such as Graves disease or lupus can lead to Vitamin B12 deficiency in the body

The CPT 96372 modifier rules aren't complicated once you understand the logic behind them, but they do require knowing which modifier applies to which code on the claim

B12 shots are injections that deliver synthetic vitamin B12 either cyanocobalamin or hydroxocobalamindirectly into a muscle or beneath the skin

Eat a light meal beforehand