1. D51 Vitamin B12 deficiency anemia


    1. D51.0 Vitamin B12 deficiency anemia due to intrinsic factor deficiency

      Inclusion term(s):

      • Addison anemia
      • Biermer anemia
      • Pernicious (congenital) anemia
      • Congenital intrinsic factor deficiency
    2. D51.1 Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria

      Inclusion term(s):

      • Imerslund (Gräsbeck) syndrome
      • Megaloblastic hereditary anemia
    3. D51.2 Transcobalamin II deficiency

    4. D51.3 Other dietary vitamin B12 deficiency anemia

      Inclusion term(s):

      • Vegan anemia
    5. D51.8 Other vitamin B12 deficiency anemias

    6. D51.9 Vitamin B12 deficiency anemia, unspecified

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.