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 B50VYZ
Plain Radiography of Other Veins using Low Osmolar Contrast
Plain Radiography of Other Veins using Other Contrast
Plain Radiography of Other Veins using High Osmolar Contrast