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 0PQ1X
Repair 1 to 2 Ribs, Open Approach
Repair 1 to 2 Ribs, Percutaneous Endoscopic Approach
Repair 1 to 2 Ribs, External Approach
Repair 1 to 2 Ribs, Percutaneous Approach