Convert ICD-10 Code D01.1 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
D01.1 Carcinoma in situ of rectosigmoid junction		230.4 Ca in situ rectum
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 D01.1 - carcinoma in situ of rectosigmoid junction based on the most recent General Equivalence Mappings (GEMS) information.