The Qualifier None is identified by letter "Z" and occupies the 6th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to BW28ZZ
CT Scan of Head using H Osm Contrast, Unenh, Enhance
CT Scan of Head using H Osm Contrast
CT Scan of Head using Oth Contrast, Unenh, Enhance
Computerized Tomography (CT Scan) of Head
Computerized Tomography (CT Scan) of Head using Oth Contrast
CT Scan of Head using L Osm Contrast
CT Scan of Head using L Osm Contrast, Unenh, Enhance