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 0QQRX
Repair Left Toe Phalanx, Percutaneous Endoscopic Approach
Repair Left Toe Phalanx, Percutaneous Approach
Repair Left Toe Phalanx, Open Approach
Repair Left Toe Phalanx, External Approach