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 05N00
Release Azygos Vein, Percutaneous Endoscopic Approach
Release Azygos Vein, Open Approach
Release Azygos Vein, Percutaneous Approach