Convert ICD-10 Code C4A.31 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
C4A.31 Merkel cell carcinoma of nose		209.31 Merkel cell ca-face
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 C4A.31 - merkel cell carcinoma of nose based on the most recent General Equivalence Mappings (GEMS) information.