The Qualifier None is identified by letter "Z" and occupies the 6th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to B310ZZ
Fluoroscopy of Thoracic Aorta
Fluoroscopy of Thoracic Aorta using High Osmolar Contrast
Fluoroscopy of Thoracic Aorta using Low Osmolar Contrast
Fluoroscopy of Thoracic Aorta using Other Contrast
Fluoroscopy Thoracic Aorta w Oth Contrast, Laser Intraop
Fluoroscopy Thoracic Aorta w L Osm Contrast, Laser Intraop
Fluoroscopy Thoracic Aorta w H Osm Contrast, Laser Intraop