Convert ICD-10 Code T20.40XA to ICD-9

Source ICD-10 Code		Target ICD-9 Code
T20.40XA Corros unsp degree of head, face, and neck, unsp site, init		941.00 Burn NOS head-unspec
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 T20.40XA - corrosion of unspecified degree of head, face, and neck, unspecified site, initial encounter based on the most recent General Equivalence Mappings (GEMS) information.