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

Source ICD-10 Code		Target ICD-9 Code
C31.9 Malignant neoplasm of accessory sinus, unspecified		160.9 Mal neo access sinus NOS

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