The Contrast None is identified by letter "Z" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to B30NZ
Plain Radiography of Oth Up Art using L Osm Contrast
Plain Radiography of Other Upper Arteries
Plain Radiography of Other Upper Arteries using Oth Contrast
Plain Radiography of Oth Up Art using H Osm Contrast