The Approach Percutaneous is identified by number "3" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 03NN3
Release Left External Carotid Artery, Perc Endo Approach
Release Left External Carotid Artery, Open Approach
Release Left External Carotid Artery, Percutaneous Approach