Convert ICD-10 Code M47.021 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
M47.021 Verteb art compression syndromes, occipt-atlan-ax region		721.1 Cerv spondyl w myelopath
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 M47.021 - vertebral artery compression syndromes, occipito-atlanto-axial region based on the most recent General Equivalence Mappings (GEMS) information.