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 0XJFX
Inspection of Left Lower Arm, Open Approach
Inspection of Left Lower Arm, Perc Endo Approach
Inspection of Left Lower Arm, External Approach
Inspection of Left Lower Arm, Percutaneous Approach