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ICD-10-CM category E23: Hypofunction and other disorders of the pituitary gland

Category E23 is a heading in chapter 4 (Endocrine, nutritional and metabolic diseases (E00-E89)), section Disorders of other endocrine glands (E20-E35). It is not billable; report one of the 6 complete codes below.

Notes that apply to every E23 code

Includes
  • the listed conditions whether the disorder is in the pituitary or the hypothalamus
Excludes1 (never coded together)
  • postprocedural hypopituitarism (E89.3)
  • short stature due to endocrine disorder (E34.3-)

Billable codes in E23

Billable FY2027 ICD-10-CM codes in category E23
CodeDescription
E23.0Hypopituitarism
E23.1Drug-induced hypopituitarism
E23.2Diabetes insipidus
E23.3Hypothalamic dysfunction, not elsewhere classified
E23.6Other disorders of pituitary gland
E23.7Disorder of pituitary gland, unspecified

Sources

Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.

Codes from the FY2027 ICD-10-CM files (all chapters). Report the code that matches the documentation and the Official Guidelines; this list is not coding advice.