Convert ICD-10 Code C39.9 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
C39.9 Malignant neoplasm of lower respiratory tract, part unsp		165.8 Mal neo thorax/resp 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.
C39.9 Malignant neoplasm of lower respiratory tract, part unsp		165.9 Mal neo resp system NOS
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 C39.9 - malignant neoplasm of lower respiratory tract, part unspecified based on the most recent General Equivalence Mappings (GEMS) information.