medical necessity for vitamin b12 injections Do You Need a Prescription Injections? Vitamin B12 Injection for Pernicious

2012 Oct;29(10):1067-71

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Biermer's congenital pernicious anemia Congenital deficiency of intrinsic factor Megaloblastic anemia due to congenital deficiency of intrinsic factor Megaloblastic anemia due to inborn errors of metabolism Myasthenic syndrome due to another disorder Myasthenic syndrome due to pernicious anemia Pernicious anemia Pernicious anemia Pernicious anemia Pernicious anemia due to autoimmune disorder Clinical Classification Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories

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Correct sequence: C-code (cancer diagnosis) PRIMARY D63.0 (Anemia in neoplastic disease) SECONDARY D63.0 is not for anemia from chemotherapy