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 BT06Z
Plain Radiography of Right Ureter
Plain Radiography of Right Ureter using Low Osmolar Contrast
Plain Radiography of Right Ureter using Other Contrast
Plain Radiography of Right Ureter using H Osm Contrast