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 0SQFX
Repair Right Ankle Joint, External Approach
Repair Right Ankle Joint, Percutaneous Endoscopic Approach
Repair Right Ankle Joint, Open Approach
Repair Right Ankle Joint, Percutaneous Approach