Specific code 2012 ICD-9-CM Diagnosis Code 251.2
Hypoglycemia, unspecified
  • Short description: Hypoglycemia NOS.
  • ICD-9-CM 251.2 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 251.2 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2012 version of ICD-9-CM 251.2.
  • More recent version(s) of ICD-9-CM 251.2: 2013 2014.
Disease Synonyms
  • Hypoglycemia
  • Hypoglycemia (low blood sugar)
  • Hypoglycemia (low blood sugar), reactive
  • Hypoglycemia unawareness
  • Hypoglycemia, reactive
  • Hypoglycemic encephalopathy
  • Loss of hypoglycemic warning
  • Reactive hypoglycemia
251.2 Excludes
Applies To
  • Hypoglycemia:
    • NOS
    • reactive
    • spontaneous
Convert to ICD-10-CM: 251.2 converts directly to:
  • 2014 ICD-10-CM E16.2 Hypoglycemia, unspecified
ICD-9-CM Volume 2 Index entries containing back-references to 251.2:
  • Encephalopathy (acute) 348.30
    • hypoglycemic 251.2
  • Findings, (abnormal), without diagnosis (examination) (laboratory test) 796.4
  • Glycopenia 251.2
  • Hyperinsulinism (ectopic) (functional) (organic) NEC 251.1
    • reactive 251.2
    • spontaneous 251.2
  • Hypoglycemia (spontaneous) 251.2
    • due to insulin 251.0
      • therapeutic misadventure 962.3
    • familial (idiopathic) 251.2
    • following gastrointestinal surgery 579.3
    • infantile (idiopathic) 251.2
    • in infant of diabetic mother 775.0
    • reactive 251.2
  • McQuarrie's syndrome (idiopathic familial hypoglycemia) 251.2
  • Sugar
  • Syndrome - see also Disease
    • hypoglycemic (familial) (neonatal) 251.2
    • McQuarrie's (idiopathic familial hypoglycemia) 251.2
  • Transient - see also condition
    • hypoglycemia (post-procedural) 251.2
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 251.2 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 2012 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.