Convert ICD-10 Code Q18.0 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
Q18.0 Sinus, fistula and cyst of branchial cleft		744.41 Branch cleft sinus/fistu
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.
Q18.0 Sinus, fistula and cyst of branchial cleft		744.42 Branchial cleft cyst
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 Q18.0 - sinus, fistula and cyst of branchial cleft based on the most recent General Equivalence Mappings (GEMS) information.