Convert ICD-10 Code Z53.21 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
Z53.21 Proc/trtmt not crd out d/t pt lv bef seen by hlth care prov		V64.06 No vaccination-pt refuse
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.
Z53.21 Proc/trtmt not crd out d/t pt lv bef seen by hlth care prov		V64.2 No proc/patient decision
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 Z53.21 - procedure and treatment not carried out due to patient leaving prior to being seen by health care provider based on the most recent General Equivalence Mappings (GEMS) information.