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 > Hemolytic Disease Of Fetus Or Newborn Due To Isoimmunization 773.* > 2008 ICD-9-CM Diagnosis 773.4 Kernicterus of fetus or newborn due to isoimmunization  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 Therefore, this code may be out of date.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 773.4 can be accessed here. 773.4 is a specific code that can be used to specify a diagnosis 773.4 contains 5 index entries View the ICD-9-CM Volume 1 773.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Use additional code, if desired, to identify type of isoimmunization (773.0-773.2) Index entries containing 773.4: Encephalopathia hyperbilirubinemica, newborn 774.7 due to isoimmunization (conditions classifiable to 773.0-773.2) 773.4 Encephalopathy (acute) 348.30 bilirubin, newborn 774.7 due to isoimmunization 773.4 hyperbilirubinemic, newborn 774.7 due to isoimmunization (conditions classifiable to 773.0-773.2) 773.4 Hyperbilirubinemica encephalopathia, newborn 774.7 due to isoimmunization 773.4 Kernicterus of newborn (not due to isoimmunization) 774.7 due to isoimmunization (conditions classifiable to 773.0-773.2) 773.4