ICD-10 Code E23.0 – Hypopituitarism (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E23.0 – Hypopituitarism
What it is
E23.0 identifies reduced or absent pituitary hormone production. Use it when documentation states hypopituitarism or pituitary insufficiency affecting one or more endocrine axes.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include fatigue, growth failure, low libido, menstrual changes, or other signs of pituitary hormone deficiency.
When to use this code
Use E23.0 when the provider documents hypopituitarism, panhypopituitarism, or pituitary failure as the diagnosis. It also fits follow-up visits for established pituitary hormone deficiency, when the condition remains clinically relevant. Check documentation if the record only mentions an abnormal pituitary test without a confirmed diagnosis.
Do not use for
Do not use this code for isolated pituitary imaging abnormalities or nonspecific endocrine symptoms without a diagnosis. If the chart names a different pituitary disorder, code that condition instead.
Coding tip
Confirm whether the provider documented partial or complete pituitary insufficiency, and code the stated diagnosis rather than inferred hormone deficits.