Convert ICD-10 Code S90.423A to ICD-9

Source ICD-10 Code		Target ICD-9 Code
S90.423A Blister (nonthermal), unspecified great toe, init encntr		917.2 Blister foot & toe
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 S90.423A - blister (nonthermal), unspecified great toe, initial encounter based on the most recent General Equivalence Mappings (GEMS) information.