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 04NJ0
Release Left External Iliac Artery, Perc Endo Approach
Release Left External Iliac Artery, Open Approach
Release Left External Iliac Artery, Percutaneous Approach