Convert ICD-10 Code C43.4 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
C43.4 Malignant melanoma of scalp and neck		172.4 Mal melanoma scalp/neck
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 C43.4 - malignant melanoma of scalp and neck based on the most recent General Equivalence Mappings (GEMS) information.