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 Short Gestation And Unspecified Low Birthweight 765.* > 2008 ICD-9-CM Diagnosis 765.20 Unspecified weeks of gestation  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 Therefore, this code may be out of date.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 765.20 can be accessed here. 765.20 is a specific code that can be used to specify a diagnosis 765.20 contains 1 index entry View the ICD-9-CM Volume 1 765.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Index entries containing 765.20: Newborn (infant) (liveborn) gestation unspecified completed weeks 765.20