ICD-10 Code E89.1 – Postprocedural hypoinsulinemia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E89.1 – Postprocedural hypoinsulinemia
What it is
E89.1 identifies low insulin production that occurs after a medical or surgical procedure, usually involving the pancreas. Use it when the record clearly links hypoinsulinemia to the procedure.
Clinical signs
Clinical features vary; refer to documentation. Records may note reduced insulin secretion, abnormal glucose control, or follow-up after pancreatic surgery or other procedures affecting endocrine function.
When to use this code
Use E89.1 when the clinician documents postprocedural hypoinsulinemia as a diagnosis or complication. It may apply during postoperative follow-up, inpatient care, or outpatient evaluation when the condition is specifically attributed to the procedure. Check documentation if the link is not explicit.
Do not use for
Do not use this code for diabetes mellitus, hypoglycemia alone, or unspecified pancreatic insufficiency. If the record does not clearly describe a postprocedural cause, check documentation.
Coding tip
Assign E89.1 only when the postoperative relationship is documented; otherwise, query the provider.