2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Congenital Anomalies 740-759 > Bulbus Cordis Anomalies And Anomalies Of Cardiac Septal Closure 745.* > 2006 ICD-9-CM Diagnosis 745.6 Endocardial cushion defects View the most recent version of ICD-9-CM 745.6 A spectrum of septal defects associated with persistence of the embryonic atrioventricular canal due to incomplete growth and fusion of the endocardial cushion. 745.6 is a non-specific code that cannot be used to specify a diagnosis View the ICD-9-CM Volume 1 745.* hierarchy