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 0YJ0X
Inspection of Right Buttock, External Approach
Inspection of Right Buttock, Perc Endo Approach
Inspection of Right Buttock, Open Approach
Inspection of Right Buttock, Percutaneous Approach