The Approach External is identified by letter "X" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 09Q4X
Repair Left External Auditory Canal, Endo
Repair Left External Auditory Canal, Perc Endo Approach
Repair Left External Auditory Canal, Open Approach
Repair Left External Auditory Canal, External Approach
Repair Left External Auditory Canal, Via Opening
Repair Left External Auditory Canal, Percutaneous Approach