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 765.18 Disorders relating to other preterm infants 2000-2499 grams  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 Therefore, this code may be out of date.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 765.18 can be accessed here. 765.18 is a specific code that can be used to specify a diagnosis 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.