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 0WQ4X
Repair Upper Jaw, Percutaneous Endoscopic Approach
Repair Upper Jaw, Open Approach
Repair Upper Jaw, External Approach
Repair Upper Jaw, Percutaneous Approach