Convert ICD-10 Code K20.9 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
K20.9 Esophagitis, unspecified		530.10 Esophagitis, unspecified
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.
K20.9 Esophagitis, unspecified		530.12 Acute esophagitis
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 K20.9 - esophagitis, unspecified based on the most recent General Equivalence Mappings (GEMS) information.