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 BW28Z
CT Scan of Head using H Osm Contrast, Unenh, Enhance
Computerized Tomography (CT Scan) of Head using Oth Contrast
CT Scan of Head using Oth Contrast, Unenh, Enhance
CT Scan of Head using L Osm Contrast, Unenh, Enhance
CT Scan of Head using L Osm Contrast
CT Scan of Head using H Osm Contrast
Computerized Tomography (CT Scan) of Head