Convert ICD-10 Code S42.399B to ICD-9

Source ICD-10 Code		Target ICD-9 Code
S42.399B Oth fracture of shaft of unsp humerus, init for opn fx		812.31 Fx humerus shaft-open
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 S42.399B - other fracture of shaft of unspecified humerus, initial encounter for open fracture based on the most recent General Equivalence Mappings (GEMS) information.