Convert ICD-10 Code T23.419D to ICD-9

Source ICD-10 Code		Target ICD-9 Code
T23.419D Corrosion of unsp degree of unsp thumb (nail), subs encntr		V58.89 Other specfied aftercare
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 T23.419D - corrosion of unspecified degree of unspecified thumb (nail), subsequent encounter based on the most recent General Equivalence Mappings (GEMS) information.