Chapter 4

E00–E89: Endocrine, Nutritional and Metabolic Diseases

Endocrine, Nutritional and Metabolic Diseases diagnostic classification updated for 2026.

Chapter Instructions

Excludes1(Not coded here. Use a different code.)
  • transitory endocrine and metabolic disorders specific to newborn (P70-P74)
Internal Codes
  • E63.8|

    Other specified nutritional deficiencies

  • E63.9|

    Nutritional deficiency, unspecified

  • E64|

    Sequelae of malnutrition and other nutritional deficiencies

  • E64.0|

    Sequelae of protein-calorie malnutrition

  • E64.1|

    Sequelae of vitamin A deficiency

  • E64.2|

    Sequelae of vitamin C deficiency

  • E64.3|

    Sequelae of rickets

  • E64.8|

    Sequelae of other nutritional deficiencies

  • E64.9|

    Sequelae of unspecified nutritional deficiency

  • E65|

    Localized adiposity

  • E66|

    Overweight and obesity

  • E66.0|

    Obesity due to excess calories

  • E66.01|

    Morbid (severe) obesity due to excess calories

  • E66.09|

    Other obesity due to excess calories

  • E66.1|

    Drug-induced obesity

  • E66.2|

    Morbid (severe) obesity with alveolar hypoventilation

  • E66.3|

    Overweight

  • E66.8|

    Other obesity

  • E66.81|

    Obesity class

  • E66.811|

    Obesity, class 1

  • E66.812|

    Obesity, class 2

  • E66.813|

    Obesity, class 3

  • E66.89|

    Other obesity not elsewhere classified

  • E66.9|

    Obesity, unspecified

  • E67|

    Other hyperalimentation

  • E67.0|

    Hypervitaminosis A

  • E67.1|

    Hypercarotenemia

  • E67.2|

    Megavitamin-B6 syndrome

  • E67.3|

    Hypervitaminosis D

  • E67.8|

    Other specified hyperalimentation

  • E68|

    Sequelae of hyperalimentation

  • E70|

    Disorders of aromatic amino-acid metabolism

  • E70.0|

    Classical phenylketonuria

  • E70.1|

    Other hyperphenylalaninemias

  • E70.2|

    Disorders of tyrosine metabolism

  • E70.20|

    Disorder of tyrosine metabolism, unspecified

  • E70.21|

    Tyrosinemia

  • E70.29|

    Other disorders of tyrosine metabolism

  • E70.3|

    Albinism

  • E70.30|

    Albinism, unspecified

  • E70.31|

    Ocular albinism

  • E70.310|

    X-linked ocular albinism

  • E70.311|

    Autosomal recessive ocular albinism

  • E70.318|

    Other ocular albinism

  • E70.319|

    Ocular albinism, unspecified

  • E70.32|

    Oculocutaneous albinism

  • E70.320|

    Tyrosinase negative oculocutaneous albinism

  • E70.321|

    Tyrosinase positive oculocutaneous albinism

  • E70.328|

    Other oculocutaneous albinism

  • E70.329|

    Oculocutaneous albinism, unspecified

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