The Qualifier None is identified by letter "Z" and occupies the 6th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to B50LYZ
Plain Radiography of Bi Renal Vein using H Osm Contrast
Plain Radiography of Bi Renal Vein using Oth Contrast
Plain Radiography of Bi Renal Vein using L Osm Contrast