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 BT10Z
Fluoroscopy of Bladder using Other Contrast
Fluoroscopy of Bladder
Fluoroscopy of Bladder using Low Osmolar Contrast
Fluoroscopy of Bladder using High Osmolar Contrast