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Convert ICD-10 Code Q18.1 to ICD-9

Source ICD-10 Code Target ICD-9 Code
Q18.1
Preauricular sinus and cyst		744.46
Preauricular 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.
Q18.1
Preauricular sinus and cyst		744.47
Preauricular 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 Q18.1 - preauricular sinus and cyst based on the most recent General Equivalence Mappings (GEMS) information.