Convert ICD-10 Code Q21.9 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
Q21.9 Congenital malformation of cardiac septum, unspecified		745.9 Septal closure anom NOS

ICD-10 to ICD-9 crosswalk for code Q21.9 - congenital malformation of cardiac septum, unspecified based on the most recent General Equivalence Mappings (GEMS) information.