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 0YQDX
Repair Left Upper Leg, Open Approach
Repair Left Upper Leg, Percutaneous Endoscopic Approach
Repair Left Upper Leg, External Approach
Repair Left Upper Leg, Percutaneous Approach