251.8
ICD-9-CMThis code signifies various less common or atypical dysfunctions of the endocrine pancreas that are not classified as diabetes mellitus, hypoglycemia, or other specific pancreatic disorders. It encompasses conditions where the pancreatic islets produce hormones (e.g., insulin, glucagon, somatostatin) in abnormal quantities or patterns, leading to metabolic disturbances.
Apply this code for documented pancreatic endocrine disorders that don't fit into more specific ICD-9-CM categories, such as hyperinsulinism without hypoglycemia (e.g., nesidioblastosis in adults), or certain forms of pancreatic neuroendocrine tumors not primarily causing hyperinsulinemia or glucagonoma syndrome. Documentation should clearly state a pancreatic internal secretion disorder that is not otherwise specified.
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