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 0PQ0X
Repair Sternum, Percutaneous Endoscopic Approach
Repair Sternum, External Approach
Repair Sternum, Open Approach
Repair Sternum, Percutaneous Approach