Convert ICD-10 Code Z57.31 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
Z57.31 Occupational exposure to environmental tobacco smoke		V62.1 Adverse eff-work environ
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 Z57.31 - occupational exposure to environmental tobacco smoke based on the most recent General Equivalence Mappings (GEMS) information.