Convert ICD-10 Code M23.231 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
M23.231 Derang of medial meniscus due to old tear/inj, right knee		717.3 Derang med meniscus 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 M23.231 - derangement of other medial meniscus due to old tear or injury, right knee based on the most recent General Equivalence Mappings (GEMS) information.