E23.2 Diabetes insipidus

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Excludes1 (never code together)

• nephrogenic diabetes insipidus (N25.1)

Applies from E23 Hypofunction and other disorders of the pituitary gland

Includes

• the listed conditions whether the disorder is in the pituitary or the hypothalamus

Excludes1 (never code together)

• postprocedural hypopituitarism (E89.3)
• short stature due to endocrine disorder (E34.3-)

Risk adjustment (HCC)

• CMS-HCC V22: HCC 23 — Other Significant Endocrine and Metabolic Disorders
• RxHCC V08: HCC 43 — Pituitary, Adrenal Gland, and Other Endocrine and Metabolic Disorders
• ESRD V24: HCC 23

MS-DRG index

Defines the logic of DRG(s) 643-645 in MDC 10.

Approximate ICD-9-CM (GEMs)

• 253.5 Diabetes insipidus

Code annotations containing back-references to E23.2

Back-references to E23.2

• Type 1 Excludes: E87 Other disorders of fluid, electrolyte and acid-base balance ("diabetes insipidus (E23.2)")
• Type 1 Excludes: N25.1 Nephrogenic diabetes insipidus ("diabetes insipidus NOS (E23.2)")

Back-references to E23

• Code First: G63 Polyneuropathy in diseases classified elsewhere ("endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34)")

Diagnosis Index entries for E23.2

• Deficiency, deficient › antidiuretic hormone
• Deficiency, deficient › vasopressin
• Diabetes, diabetic (mellitus) (sugar) › insipidus
• Diabetes, diabetic (mellitus) (sugar) › insipidus › pituitary
• Hyposecretion › antidiuretic hormone
• Hyposecretion › vasopressin
• Inappropriate › secretion › antidiuretic hormone (ADH) (excessive) › deficiency
• Perversion, perverted › function › pituitary gland

Nearby codes

• E23 Hypofunction and other disorders of the pituitary gland
• E23.0 Hypopituitarism
• E23.1 Drug-induced hypopituitarism
• E23.2 Diabetes insipidus (this code)
• E23.3 Hypothalamic dysfunction, not elsewhere classified
• E23.6 Other disorders of pituitary gland
• E23.7 Disorder of pituitary gland, unspecified