Specific code 2012 ICD-9-CM Diagnosis Code 790.21
Impaired fasting glucose
  • ICD-9-CM 790.21 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 790.21 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 790.21.
  • More recent version(s) of ICD-9-CM 790.21: 2013 2014.
Disease Synonyms
  • Impaired fasting glycaemia
Applies To
  • Elevated fasting glucose
Convert to ICD-10-CM: 790.21 converts directly to:
  • 2014 ICD-10-CM R73.01 Impaired fasting glucose
ICD-9-CM Volume 2 Index entries containing back-references to 790.21:
  • Elevation
    • glucose
      • fasting 790.21
      • tolerance test 790.22
  • Findings, (abnormal), without diagnosis (examination) (laboratory test) 796.4
  • Impaired, impairment (function)
    • glucose
      • fasting 790.21
      • tolerance test (oral) 790.22
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 790.21 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.