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 BT0BZ
Plain Radiography of Bladder and Urethra
Plain Radiography of Bladder & Urethra using L Osm Contrast
Plain Radiography of Bladder and Urethra using Oth Contrast
Plain Radiography of Bladder & Urethra using H Osm Contrast