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 0QQ1X
Repair Sacrum, Percutaneous Approach
Repair Sacrum, Percutaneous Endoscopic Approach
Repair Sacrum, Open Approach
Repair Sacrum, External Approach