Home > 2015 ICD-9-CM Diagnosis Codes > Endocrine, Nutritional And Metabolic Diseases, And Immunity Disorders 240-279 > Diseases Of Other Endocrine Glands 249-259 > Other disorders of pancreatic internal secretion 251-
Specific code 2015 ICD-9-CM Diagnosis Code 251.1
Other specified hypoglycemia
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 251.1 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 251.1 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 251.1 converts approximately to:
  • 2015/16 ICD-10-CM E16.0 Drug-induced hypoglycemia without coma
    Or:
  • 2015/16 ICD-10-CM E16.1 Other hypoglycemia
Approximate Synonyms
  • Alcohol-induced hypoglycemia
  • Alimentary hyperinsulinemia
  • Autoimmune hypoglycemia
  • Drug induced hypoglycemia
  • Drug-induced hyperinsulinemia
  • Drug-induced hypoglycemia
  • Drug-induced hypoglycemia without coma
  • Ectopic hyperinsulinism
  • Ectopic IGF hypoglycemia
  • Ectopic IGF-1 hypoglycemia
  • Ectopic IGF-2 hypoglycemia
  • Factitious hypoglycemia
  • Functional hyperinsulinism
  • Hyperinsulinemia due to insulinoma
  • Hyperinsulinism
  • Hyperplasia of pancreatic islet beta cell
  • Idiopathic postprandial hypoglycemia
  • Impaired glucose tolerance with hyperinsulism
  • Ketotic hypoglycemia
  • Mixed hypoglycemia
  • Neuroglycopenia
  • Nocturnal hypoglycemia
  • Pancreatic islet beta cell hyperplasia
  • PHHI - Persistent hyperinsulinemic hypoglycemia of infancy
  • Self-induced hyperinsulinemia
  • Transitory neonatal hypoglycemia
  • Tumor-induced hypoglycemia
Clinical Information
  • Syndrome with excessively high insulin levels in the blood; it may cause hypoglycemia; etiology of hyperinsulinism varies, including hypersecretion of a beta cell tumor, autoantibodies against insulin, defective insulin receptor, or overuse of exogeneous insulin or hypoglycemic agents
251.1 Excludes
  • hypoglycemia in diabetes mellitus (249.8, 250.8)
  • hypoglycemia in infant of diabetic mother (775.0)
  • hypoglycemic coma (251.0)
  • neonatal hypoglycemia (775.6)
Applies To
  • Hyperinsulinism:
    • NOS
    • ectopic
    • functional
  • Hyperplasia of pancreatic islet beta cells NOS
Use Additional
  • Use additional E code to identify cause, if drug-induced
ICD-9-CM Volume 2 Index entries containing back-references to 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
    • therapeutic misadventure (from administration of insulin) 962.3
  • Hyperplasia, hyperplastic
    • islands of Langerhans 251.1
    • islet cell (pancreatic) 251.9
      • alpha cells
      • beta cells 251.1
    • pancreatic islet cells 251.9
      • alpha
      • 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
 251.0 ICD9Data.com 251.2 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 251.1 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
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