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 0951X
Destruction of Left External Ear, Open Approach
Destruction of Left External Ear, Perc Endo Approach
Destruction of Left External Ear, Percutaneous Approach
Destruction of Left External Ear, External Approach