2008 ICD-9-CM Volume 1 Diagnosis Codes Home > 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.* > 2008 ICD-9-CM Diagnosis 766.22 Prolonged gestation of infant  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 766.22 can be accessed here. 766.22 is a specific code that can be used to specify a diagnosis 766.22 contains 14 index entries View the ICD-9-CM Volume 1 766.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. 766.22 also known as: Infant with gestation period over 42 completed weeks Postmaturity NOS Index entries containing 766.22: Ballantyne (-Runge) syndrome (postmaturity) 766.22 Clifford's syndrome (postmaturity) 766.22 Hypermaturity (fetus or newborn) prolonged gestation infant 766.22 Infant - see also condition prolonged gestation of (period over 42 completed weeks) 766.22 Late - see also condition infant prolonged gestation (period over 42 completed weeks) 766.22 Postmaturity, postmature (fetus or newborn) (gestation period over 42 completed weeks) 766.22 affecting management of pregnancy post-term pregnancy 645.1 prolonged pregnancy 645.2 syndrome 766.22 Prolonged, prolongation gestation syndrome 766.22 Runge's syndrome (postmaturity) 766.22 Syndrome - see also Disease Ballantyne (-Runge) (postmaturity) 766.22 Clifford's (postmaturity) 766.22 postmature (of newborn) 766.22 prolonged gestation 766.22 Runge's (postmaturity) 766.22