ICD-10 Code E16.9 – Disorder of pancreatic internal secretion, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E16.9 – Disorder of pancreatic internal secretion, unspecified
What it is
E16.9 identifies an unspecified disorder of pancreatic internal secretion. Use it when the record documents a pancreatic endocrine problem, but the exact condition is not named.
Clinical signs
Clinical features vary; refer to documentation. Findings may reflect abnormal pancreatic hormone production, but the chart should support that a pancreatic internal secretion disorder is present.
When to use this code
Use this code when the clinician documents a disorder of pancreatic internal secretion without a more specific diagnosis. It is appropriate when the record is incomplete or the exact endocrine abnormality is not yet clarified. Do not assume a specific pancreatic condition without documentation.
Do not use for
Do not use E16.9 when a more specific pancreatic endocrine disorder is documented. If the note describes a different endocrine, metabolic, or pancreatic diagnosis, check documentation and code the stated condition instead.
Coding tip
Query for specificity whenever the pancreas-related endocrine disorder is vague, because a more detailed code may be available.