Convert ICD-10 Code Q28.1 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
Q28.1 Other malformations of precerebral vessels		747.89 Circulatory anomaly NEC
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

ICD-10 to ICD-9 crosswalk for code Q28.1 - other malformations of precerebral vessels based on the most recent General Equivalence Mappings (GEMS) information.