2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Endocrine, Nutritional And Metabolic Diseases, And Immunity Disorders 240-279 > Diseases Of Other Endocrine Glands 250-259 > Other Disorders Of Pancreatic Internal Secretion 251.* > 2006 ICD-9-CM Diagnosis 251.1 Other specified hypoglycemia View the most recent version of ICD-9-CM 251.1 A syndrome with excessively high INSULIN levels in the BLOOD. It may cause HYPOGLYCEMIA. Etiology of hyperinsulinism varies, including hypersecretion of a beta cell tumor (INSULINOMA); autoantibodies against insulin (INSULIN ANTIBODIES); defective insulin receptor (INSULIN RESISTANCE); or overuse of exogenous insulin or HYPOGLYCEMIC AGENTS. 251.1 is a specific code that can be used to specify a diagnosis 251.1 contains 11 index entries View the ICD-9-CM Volume 1 251.* hierarchy Alternate Terminology Hyperinsulinism: NOS ectopic functional Hyperplasia of pancreatic islet beta cells NOS 251.1 Excludes hypoglycemia in diabetes mellitus (250.8) hypoglycemia in infant of diabetic mother (775.0) hypoglycemic coma (251.0) neonatal hypoglycemia (775.6)  Index entries containing 251.1: Disease, diseased - see also Syndrome hunger 251.1 Harris' syndrome (organic hyperinsulinism) 251.1 Hunger 994.2 disease 251.1 Hyperinsulinism (ectopic) (functional) (organic) NEC 251.1 iatrogenic 251.0 reactive 251.2 spontaneous 251.2 therapeutic misadventure (from administration of insulin) 962.3 Hyperplasia, hyperplastic islands of Langerhans 251.1 islet cell (pancreatic) 251.9 beta cells 251.1 pancreatic islet cells 251.9 beta 251.1 Hypoglycemia (spontaneous) 251.2 specified NEC 251.1 Hypoglycemic shock 251.0 functional (syndrome) 251.1 Syndrome - see also Disease Harris' (organic hyperinsulinism) 251.1 hypoglycemic (familial) (neonatal) 251.2 functional 251.1