| E16 | Other disorders of pancreatic internal secretion |
| E16.0 | Drug-induced hypoglycemia without coma |
| E16.1 | Other hypoglycemia |
| E16.2 | Hypoglycemia, unspecified |
| E16.3 | Increased secretion of glucagon |
| E16.4 | Increased secretion of gastrin |
| E16.8 | Other specified disorders of pancreatic internal secretion |
| E16.9 | Disorder of pancreatic internal secretion, unspecified |
| E20 | Hypoparathyroidism |
| E20.0 | Idiopathic hypoparathyroidism |
| E20.1 | Pseudohypoparathyroidism |
| E20.8 | Other hypoparathyroidism |
| E20.9 | Hypoparathyroidism, unspecified |
| E21 | Hyperparathyroidism and other disorders of parathyroid gland |
| E21.0 | Primary hyperparathyroidism |
| E21.1 | Secondary hyperparathyroidism, not elsewhere classified |
| E21.2 | Other hyperparathyroidism |
| E21.3 | Hyperparathyroidism, unspecified |
| E21.4 | Other specified disorders of parathyroid gland |
| E21.5 | Disorder of parathyroid gland, unspecified |
| E22 | Hyperfunction of pituitary gland |
| E22.0 | Acromegaly and pituitary gigantism |
| E22.1 | Hyperprolactinemia |
| E22.2 | Syndrome of inappropriate secretion of antidiuretic hormone |
| E22.8 | Other hyperfunction of pituitary gland |
| E22.9 | Hyperfunction of pituitary gland, unspecified |
| E23 | Hypofunction and other disorders of the pituitary gland |
| E23.0 | Hypopituitarism |
| E23.1 | Drug-induced hypopituitarism |
| E23.2 | Diabetes insipidus |
| E23.3 | Hypothalamic dysfunction, not elsewhere classified |
| E23.6 | Other disorders of pituitary gland |
| E23.7 | Disorder of pituitary gland, unspecified |
| E24 | Cushing's syndrome |
| E24.0 | Pituitary-dependent Cushing's disease |
| E24.1 | Nelson's syndrome |
| E24.2 | Drug-induced Cushing's syndrome |
| E24.3 | Ectopic ACTH syndrome |
| E24.4 | Alcohol-induced pseudo-Cushing's syndrome |
| E24.8 | Other Cushing's syndrome |
| E24.9 | Cushing's syndrome, unspecified |
| E25 | Adrenogenital disorders |
| E25.0 | Congenital adrenogenital disorders associated with enzyme deficiency |
| E25.8 | Other adrenogenital disorders |
| E25.9 | Adrenogenital disorder, unspecified |
| E26 | Hyperaldosteronism |
| E26.0 | Primary hyperaldosteronism |
| E26.01 | Conn's syndrome |
| E26.02 | Glucocorticoid-remediable aldosteronism |
| E26.09 | Other primary hyperaldosteronism |
| E26.1 | Secondary hyperaldosteronism |
| E26.8 | Other hyperaldosteronism |
| E26.81 | Bartter's syndrome |
| E26.89 | Other hyperaldosteronism |
| E26.9 | Hyperaldosteronism, unspecified |
| E27 | Other disorders of adrenal gland |
| E27.0 | Other adrenocortical overactivity |
| E27.1 | Primary adrenocortical insufficiency |
| E27.2 | Addisonian crisis |
| E27.3 | Drug-induced adrenocortical insufficiency |
| E27.4 | Other and unspecified adrenocortical insufficiency |
| E27.40 | Unspecified adrenocortical insufficiency |
| E27.49 | Other adrenocortical insufficiency |
| E27.5 | Adrenomedullary hyperfunction |
| E27.8 | Other specified disorders of adrenal gland |
| E27.9 | Disorder of adrenal gland, unspecified |
| E28 | Ovarian dysfunction |
| E28.0 | Estrogen excess |
| E28.1 | Androgen excess |
| E28.2 | Polycystic ovarian syndrome |
| E28.3 | Primary ovarian failure |
| E28.31 | Premature menopause |
| E28.310 | Symptomatic premature menopause |
| E28.319 | Asymptomatic premature menopause |
| E28.39 | Other primary ovarian failure |
| E28.8 | Other ovarian dysfunction |
| E28.9 | Ovarian dysfunction, unspecified |
| E29 | Testicular dysfunction |
| E29.0 | Testicular hyperfunction |
| E29.1 | Testicular hypofunction |
| E29.8 | Other testicular dysfunction |
| E29.9 | Testicular dysfunction, unspecified |
| E30 | Disorders of puberty, not elsewhere classified |
| E30.0 | Delayed puberty |
| E30.1 | Precocious puberty |
| E30.8 | Other disorders of puberty |
| E30.9 | Disorder of puberty, unspecified |
| E31 | Polyglandular dysfunction |
| E31.0 | Autoimmune polyglandular failure |
| E31.1 | Polyglandular hyperfunction |
| E31.2 | Multiple endocrine neoplasia [MEN] syndromes |
| E31.20 | Multiple endocrine neoplasia [MEN] syndrome, unspecified |
| E31.21 | Multiple endocrine neoplasia [MEN] type I |
| E31.22 | Multiple endocrine neoplasia [MEN] type IIA |
| E31.23 | Multiple endocrine neoplasia [MEN] type IIB |
| E31.8 | Other polyglandular dysfunction |
| E31.9 | Polyglandular dysfunction, unspecified |