ICD-10-CM 2027
ICD-10 code for pituitary gland necrosis
From the official ICD-10-CM alphabetic index entry “Necrosis, necrotic (ischemic) › pituitary (gland)”. Page updated September 29, 2026.
About coding pituitary gland necrosis
The ICD-10-CM code for pituitary gland necrosis is E23.0 (Hypopituitarism). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on E23.0.
Within E23 (hypofunction and other disorders of the pituitary gland), E23.0 is specifically for hypopituitarism. Related codes cover drug-induced hypopituitarism (E23.1), diabetes insipidus (E23.2), hypothalamic dysfunction, not elsewhere classified (E23.3), other disorders of pituitary gland (E23.6) and disorder of pituitary gland, unspecified (E23.7).
Use an additional code, if applicable, for associated cachexia (E88.A).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
More specific pituitary gland necrosis codes (official index)
Common questions about pituitary gland necrosis ICD-10 codes
What is the ICD-10 code for pituitary gland necrosis?
- E23.0 — Hypopituitarism. More specific codes apply when the documentation supports them: O99.285, O99.285.
What is the ICD-10 code for postpartum pituitary gland necrosis?
- O99.285 — Endocrine, nutritional and metabolic diseases complicating the puerperium.
What is the ICD-10 code for sheehan pituitary gland necrosis?
- O99.285 — Endocrine, nutritional and metabolic diseases complicating the puerperium.
Is E23.0 billable?
- Yes. E23.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E23.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E23.0 as a principal diagnosis.
Is E23.0 a CC or MCC?
- E23.0 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.