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 B31FZ
Fluoroscopy of Left Vertebral Artery
Fluoroscopy of Left Vertebral Artery using L Osm Contrast
Fluoroscopy L Verteb Art w H Osm Contrast, Laser Intraop
Fluoroscopy L Verteb Art w L Osm Contrast, Laser Intraop
Fluoroscopy of Left Vertebral Artery using Other Contrast
Fluoroscopy of Left Vertebral Artery using H Osm Contrast
Fluoroscopy L Verteb Art w Oth Contrast, Laser Intraop