ICD-10 Code E89.3 – Postprocedural hypopituitarism (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E89.3 – Postprocedural hypopituitarism
What it is
E89.3 identifies hypopituitarism that develops after a procedure, usually involving the pituitary gland or nearby structures. It means the pituitary no longer produces enough hormones because of treatment-related injury.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include evidence of pituitary hormone deficiency after surgery or another procedure, with symptoms tied to the affected hormones.
When to use this code
Use E89.3 when the record clearly links pituitary hormone deficiency to a prior procedure. It is appropriate after pituitary surgery, transsphenoidal procedures, or other documented iatrogenic injury. Code it only when the postoperative cause is stated or clearly implied.
Do not use for
Do not use this code for hypopituitarism from tumors, trauma, infection, or congenital causes. If the chart does not show a postprocedural cause, check documentation before assigning E89.3.
Coding tip
Look for operative notes and discharge summaries that connect the endocrine deficit to the procedure before coding E89.3.