Convert ICD-10 Code C21.8 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
C21.8 Malig neoplasm of ovrlp sites of rectum, anus and anal canal		154.8 Mal neo rectum/anus 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.

ICD-10 to ICD-9 crosswalk for code C21.8 - malignant neoplasm of overlapping sites of rectum, anus and anal canal based on the most recent General Equivalence Mappings (GEMS) information.