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 B5071Z
Plain Radiography of L Subclav Vein using L Osm Contrast
Plain Radiography of L Subclav Vein using H Osm Contrast
Plain Radiography of Left Subclavian Vein using Oth Contrast