E ICD-10-CM Categories: Category Index
Browse 73 top-level ICD-10-CM categories beginning with E, then follow their complete FY 2027 child-code hierarchies.
Complete category list
Categories beginning with E
Open a category to continue through its complete hierarchy of more specific codes.
E00Congenital iodine-deficiency syndrome
E01Iodine-deficiency related thyroid disorders and allied conditions
E02Subclinical iodine-deficiency hypothyroidism
E03Other hypothyroidism
E04Other nontoxic goiter
E05Thyrotoxicosis [hyperthyroidism]
E06Thyroiditis
E07Other disorders of thyroid
E08Diabetes mellitus due to underlying condition
E09Drug or chemical induced diabetes mellitus
E10Type 1 diabetes mellitus
E11Type 2 diabetes mellitus
E13Other specified diabetes mellitus
E15Nondiabetic hypoglycemic coma
E16Other disorders of pancreatic internal secretion
E20Hypoparathyroidism
E21Hyperparathyroidism and other disorders of parathyroid gland
E22Hyperfunction of pituitary gland
E23Hypofunction and other disorders of the pituitary gland
E24Cushing's syndrome
E25Adrenogenital disorders
E26Hyperaldosteronism
E27Other disorders of adrenal gland
E28Ovarian dysfunction
E29Testicular dysfunction
E30Disorders of puberty, not elsewhere classified
E31Polyglandular dysfunction
E32Diseases of thymus
E34Other endocrine disorders
E35Disorders of endocrine glands in diseases classified elsewhere
E36Intraoperative complications of endocrine system
E40Kwashiorkor
E41Nutritional marasmus
E42Marasmic kwashiorkor
E43Unspecified severe protein-calorie malnutrition
E44Protein-calorie malnutrition of moderate and mild degree
E45Retarded development following protein-calorie malnutrition
E46Unspecified protein-calorie malnutrition
E50Vitamin A deficiency
E51Thiamine deficiency
E52Niacin deficiency [pellagra]
E53Deficiency of other B group vitamins
E54Ascorbic acid deficiency
E55Vitamin D deficiency
E56Other vitamin deficiencies
E58Dietary calcium deficiency
E59Dietary selenium deficiency
E60Dietary zinc deficiency
E61Deficiency of other nutrient elements
E63Other nutritional deficiencies
E64Sequelae of malnutrition and other nutritional deficiencies
E65Localized adiposity
E66Overweight and obesity
E67Other hyperalimentation
E68Sequelae of hyperalimentation
E70Disorders of aromatic amino-acid metabolism
E71Disorders of branched-chain amino-acid metabolism and fatty-acid metabolism
E72Other disorders of amino-acid metabolism
E73Lactose intolerance
E74Other disorders of carbohydrate metabolism
E75Disorders of sphingolipid metabolism and other lipid storage disorders
E76Disorders of glycosaminoglycan metabolism
E77Disorders of glycoprotein metabolism
E78Disorders of lipoprotein metabolism and other lipidemias
E79Disorders of purine and pyrimidine metabolism
E80Disorders of porphyrin and bilirubin metabolism
E83Disorders of mineral metabolism
E84Cystic fibrosis
E85Amyloidosis
E86Volume depletion
E87Other disorders of fluid, electrolyte and acid-base balance
E88Other and unspecified metabolic disorders
E89Postprocedural endocrine and metabolic complications and disorders, not elsewhere classified
Transparency
Source and release
This category index is generated from Vero’s repository-backed ICD-10-CM hierarchy. Every listed category is a top-level record, and each linked category page exposes its direct child codes.
Review the CDC/NCHS ICD-10-CM sourceCategory navigation
Frequently asked questions
Which ICD-10-CM categories begin with E?
This index lists 73 top-level categories beginning with E from Vero’s FY 2027 U.S. ICD-10-CM reference dataset.
How do I find a more specific E code?
Open a category below, then follow its linked child-code hierarchy until you reach the code supported by the documentation.
Which ICD-10-CM release does this E index use?
The index uses the FY 2027 U.S. ICD-10-CM release and the repository-backed hierarchy displayed on each linked code page.
Is every E category billable?
No. These are top-level categories used for navigation. Follow the hierarchy to a sufficiently specific code and confirm the active code set, official guidance, and payer requirements.
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