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 0WQ3X
Repair Oral Cavity and Throat, Percutaneous Approach
Repair Oral Cavity and Throat, External Approach
Repair Oral Cavity and Throat, Perc Endo Approach
Repair Oral Cavity and Throat, Open Approach