Convert ICD-10 Code C49.A1 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
C49.A1 Gastrointestinal stromal tumor of esophagus		171.5 Mal neo soft tis abdomen
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 C49.A1 - gastrointestinal stromal tumor of esophagus based on the most recent General Equivalence Mappings (GEMS) information.