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 0XQ7X
Repair Left Upper Extremity, Open Approach
Repair Left Upper Extremity, External Approach
Repair Left Upper Extremity, Percutaneous Approach
Repair Left Upper Extremity, Perc Endo Approach