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 0QQ4X
Repair Right Acetabulum, Percutaneous Approach
Repair Right Acetabulum, Percutaneous Endoscopic Approach
Repair Right Acetabulum, External Approach
Repair Right Acetabulum, Open Approach