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 05NN0
Release Left Internal Jugular Vein, Perc Endo Approach
Release Left Internal Jugular Vein, Percutaneous Approach
Release Left Internal Jugular Vein, Open Approach