Convert ICD-10 Code S21.90XS to ICD-9

Source ICD-10 Code		Target ICD-9 Code
S21.90XS Unsp open wound of unspecified part of thorax, sequela		906.0 Lt eff opn wnd head/trnk
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 S21.90XS - unspecified open wound of unspecified part of thorax, sequela based on the most recent General Equivalence Mappings (GEMS) information.