Home > 2012 ICD-9-CM Diagnosis Codes > Certain Conditions Originating In The Perinatal Period 760-779 > Other Conditions Originating In The Perinatal Period 764-779 > Disorders relating to long gestation and high birthweight 766-
Specific code 2012 ICD-9-CM Diagnosis Code 766.21
Post-term infant
  • ICD-9-CM 766.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 766.21 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).
  • You are viewing the 2012 version of ICD-9-CM 766.21.
  • More recent version(s) of ICD-9-CM 766.21: 2013 2014 2015.
Convert to ICD-10-CM: 766.21 converts directly to:
  • 2015/16 ICD-10-CM P08.21 Post-term newborn
Applies To
  • Infant with gestation period over 40 completed weeks to 42 completed weeks
ICD-9-CM Volume 2 Index entries containing back-references to 766.21:
  • Hypermaturity (fetus or newborn)
    • post-term infant 766.21
  • Infant - see also condition
    • post-term (gestation period over 40 completed weeks to 42 completed weeks) 766.21
  • Late - see also condition
    • infant
      • post-term (gestation period over 40 completed weeks to 42 completed weeks) 766.21
      • prolonged gestation (period over 42 completed weeks) 766.22
  • Post-term (pregnancy) 645.1
    • infant (gestation period over 40 completed weeks to 42 completed weeks) 766.21
 766.2 ICD9Data.com 766.22 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 766.21 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.
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