2006 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.* > 2006 ICD-9-CM Diagnosis 765.0 Disorders relating to extreme immaturity of infant View the most recent version of ICD-9-CM 765.0 765.0 is a non-specific code that cannot be used to specify a diagnosis 765.0 contains 8 index entries View the ICD-9-CM Volume 1 765.* hierarchy Note : Usually implies a birthweight of less than 1,000 grams.  Index entries containing 765.0: Birth immature 765.1 extremely 765.0 Immaturity 765.1 extreme 765.0 Low birthweight 765.1 extreme (less than 1000 grams) 765.0 Nonviability 765.0 Premature - see also condition infant NEC 765.1 excessive 765.0 Prematurity NEC 765.1 extreme 765.0 Preterm infant NEC 765.1 extreme 765.0 Weight less than 1000 grams at birth 765.0