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 B42HZ
Computerized Tomography (CT Scan) of Bi Low Extrem Art
CT Scan of Bi Low Extrem Art using L Osm Contrast
CT Scan of Bi Low Extrem Art using Intravasc Optic Cohere
CT Scan of Bi Low Extrem Art using Oth Contrast
CT Scan of Bi Low Extrem Art using H Osm Contrast