Convert ICD-10 Code M22.91 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
M22.91 Unspecified disorder of patella, right knee		717.9 Int derangement knee NOS
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 M22.91 - unspecified disorder of patella, right knee based on the most recent General Equivalence Mappings (GEMS) information.