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 BB2FZ
CT Scan of Trachea/Airway using L Osm Contrast
CT Scan Trachea/Airway w H Osm Contrast, Unenh, Enhance
CT Scan of Trachea/Airway using Oth Contrast, Unenh, Enhance
CT Scan of Trachea/Airway using Oth Contrast
Computerized Tomography (CT Scan) of Trachea/Airways
CT Scan of Trachea/Airway using H Osm Contrast
CT Scan Trachea/Airway w L Osm Contrast, Unenh, Enhance