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 BQ23Z
Computerized Tomography (CT Scan) of Right Femur
CT Scan of R Femur using Oth Contrast
CT Scan of R Femur using L Osm Contrast
CT Scan of R Femur using H Osm Contrast