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 0WJKX
Inspection of Upper Back, External Approach
Inspection of Upper Back, Percutaneous Endoscopic Approach
Inspection of Upper Back, Percutaneous Approach
Inspection of Upper Back, Open Approach