The Body Part Hemiazygos Vein is identified by number "1" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 05N1
Release Hemiazygos Vein, Percutaneous Approach
Release Hemiazygos Vein, Open Approach
Release Hemiazygos Vein, Percutaneous Endoscopic Approach