The Approach Open is identified by number "0" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 03NL0
Release Left Internal Carotid Artery, Percutaneous Approach
Release Left Internal Carotid Artery, Perc Endo Approach
Release Left Internal Carotid Artery, Open Approach