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 0XJKX
Inspection of Left Hand, External Approach
Inspection of Left Hand, Percutaneous Endoscopic Approach
Inspection of Left Hand, Open Approach
Inspection of Left Hand, Percutaneous Approach