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 BQ2WZ
Computerized Tomography (CT Scan) of Left Patella
CT Scan of L Patella using L Osm Contrast
CT Scan of L Patella using H Osm Contrast
CT Scan of L Patella using Oth Contrast