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 BP2HZ
Computerized Tomography (CT Scan) of Left Elbow
CT Scan of L Elbow using Oth Contrast
CT Scan of L Elbow using H Osm Contrast
CT Scan of L Elbow using L Osm Contrast