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 B312Z
Fluoroscopy L Subclavian Art w Oth Contrast, Laser Intraop
Fluoroscopy of Left Subclavian Artery using L Osm Contrast
Fluoroscopy L Subclavian Art w H Osm Contrast, Laser Intraop
Fluoroscopy L Subclavian Art w L Osm Contrast, Laser Intraop
Fluoroscopy of Left Subclavian Artery using H Osm Contrast
Fluoroscopy of Left Subclavian Artery using Other Contrast
Fluoroscopy of Left Subclavian Artery