Benign neoplasm of islets of Langerhans

This code signifies a non-cancerous tumor originating from the endocrine cells (islets) of the pancreas. These tumors can produce hormones, leading to various clinical syndromes depending on the cell type involved (e.g., insulinoma, glucagonoma).

Apply this code when documentation confirms a benign, non-malignant neoplasm of the pancreatic islets. This diagnosis is typically established through imaging, biopsy, and/or hormonal studies.

• Differentiate carefully from malignant neoplasms of the pancreas (157.x series) or uncertain behavior (235.0).
• Specify the type of islet cell tumor if known and documented (e.g., insulinoma, glucagonoma) using additional codes if available in other code sets.
• Code any associated endocrine syndromes (e.g., hypoglycemia due to insulinoma) as secondary diagnoses.