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 0YQLX
Repair Left Ankle Region, Open Approach
Repair Left Ankle Region, Percutaneous Approach
Repair Left Ankle Region, Percutaneous Endoscopic Approach
Repair Left Ankle Region, External Approach