Convert ICD-10 Code C31.2 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
C31.2 Malignant neoplasm of frontal sinus		160.4 Malig neo frontal sinus

ICD-10 to ICD-9 crosswalk for code C31.2 - malignant neoplasm of frontal sinus based on the most recent General Equivalence Mappings (GEMS) information.