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 06NQ0
Release Left Saphenous Vein, Percutaneous Approach
Release Left Saphenous Vein, Open Approach
Release Left Saphenous Vein, Perc Endo Approach