Disorders of other endocrine glands (E20-E35)
Codes E20-E35 cover various disorders affecting endocrine glands beyond the thyroid and pancreas, including diseases of the parathyroid, pituitary, adrenal glands, ovaries, and testes. These codes are essential for identifying specific conditions such as hypoparathyroidism (E20), hyperparathyroidism (E21), pituitary gland dysfunctions (E22-E23), Cushing's syndrome (E24), adrenogenital disorders (E25), and polyglandular syndromes (E31).
The ICD-10-CM range E20-E35 also includes detailed subcodes for precise diagnoses, facilitating accurate tracking of conditions like idiopathic hypoparathyroidism (E20.0), pituitary-dependent Cushing’s disease (E24.0), and polycystic ovarian syndrome (E28.2). Common synonyms such as Conn's syndrome for E26.01 and ACTH-dependent Cushing's syndrome for E24.0 help coders link clinical terminology to the correct codes. Additionally, distinctions between primary, secondary, and unspecified forms; seen in codes like E20.81 (hypoparathyroidism due to impaired hormone secretion) and E21.1 (secondary hyperparathyroidism); are clearly outlined. These codes also address dysfunctions in sexual development and puberty disorders, for example, delayed puberty (E30.0) and precocious puberty (E30.1). Overall, the E20-E35 range targets specialized endocrine gland disorders, supporting nuanced coding for endocrine diagnostics and management.
- Hypoparathyroidism (E20)
- Hyperparathyroidism and other disorders of parathyroid gland
- Hyperfunction of pituitary gland (E22)
- Hypofunction and other disorders of the pituitary gland (E23
- Cushing's syndrome (E24)
- Adrenogenital disorders (E25)
- Hyperaldosteronism (E26)
- Other disorders of adrenal gland (E27)
- Ovarian dysfunction (E28)
- Testicular dysfunction (E29)
- Disorders of puberty, not elsewhere classified (E30)
- Polyglandular dysfunction (E31)
- Diseases of thymus (E32)
- Other endocrine disorders (E34)
- Disorders of endocrine glands in diseases classified elsewhe
Endocrine, nutritional and metabolic diseases (E00–E89)
Disorders of other endocrine glands (E20-E35)
E20 Hypoparathyroidism
- E20.0 Idiopathic hypoparathyroidism
- E20.1 Pseudohypoparathyroidism
E20.8 Other hypoparathyroidism
E20.81 Hypoparathyroidism due to impaired parathyroid hormone secretion
- E20.810 Autosomal dominant hypocalcemia
- E20.811 Secondary hypoparathyroidism in diseases classified elsewhere
- E20.812 Autoimmune hypoparathyroidism
- E20.818 Other specified hypoparathyroidism due to impaired parathyroid hormone secretion
- E20.819 Hypoparathyroidism due to impaired parathyroid hormone secretion, unspecified
- E20.89 Other specified hypoparathyroidism
- E20.9 Hypoparathyroidism, unspecified
Hypoparathyroidism (E20)
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
Hyperparathyroidism and other disorders of parathyroid gland (E21)
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
Hyperfunction of pituitary gland (E22)
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
Hypofunction and other disorders of the pituitary gland (E23)
E25 Adrenogenital disorders
- E25.0 Congenital adrenogenital disorders associated with enzyme deficiency
- E25.8 Other adrenogenital disorders
- E25.9 Adrenogenital disorder, unspecified
Adrenogenital disorders (E25)
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
Hyperaldosteronism (E26)
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
Other disorders of adrenal gland (E27)
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
Ovarian dysfunction (E28)
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
Polyglandular dysfunction (E31)
E34 Other endocrine disorders
E34.0 Carcinoid syndrome DELETED CODE
- E34.00 Carcinoid syndrome, unspecified NEW CODE
- E34.01 Carcinoid heart syndrome NEW CODE
- E34.09 Other carcinoid syndrome NEW CODE
- E34.1 Other hypersecretion of intestinal hormones
- E34.2 Ectopic hormone secretion, not elsewhere classified
E34.3 Short stature due to endocrine disorder
- E34.30 Short stature due to endocrine disorder, unspecified
- E34.31 Constitutional short stature
E34.32 Genetic causes of short stature
- E34.321 Primary insulin-like growth factor-1 (IGF-1) deficiency
- E34.322 Insulin-like growth factor-1 (IGF-1) resistance
- E34.328 Other genetic causes of short stature
- E34.329 Unspecified genetic causes of short stature
- E34.39 Other short stature due to endocrine disorder
- E34.4 Constitutional tall stature
E34.5 Androgen insensitivity syndrome
- E34.50 Androgen insensitivity syndrome, unspecified
- E34.51 Complete androgen insensitivity syndrome
- E34.52 Partial androgen insensitivity syndrome
- E34.8 Other specified endocrine disorders
- E34.9 Endocrine disorder, unspecified
Other endocrine disorders (E34)
- E35 Disorders of endocrine glands in diseases classified elsewhere
Disorders of endocrine glands in diseases classified elsewhere (E35)
Instructional Notations
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
