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 BR12Z
Fluoroscopy of Thoracic Disc(s) using Other Contrast
Fluoroscopy of Thoracic Disc(s) using High Osmolar Contrast
Fluoroscopy of Thoracic Disc(s)
Fluoroscopy of Thoracic Disc(s) using Low Osmolar Contrast