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 BQ2GZ
CT Scan of R Ankle using Oth Contrast
Computerized Tomography (CT Scan) of Right Ankle
CT Scan of R Ankle using L Osm Contrast
CT Scan of R Ankle using H Osm Contrast