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 BB27Z
CT Scan of R Tracheobronc Tree using Oth Contrast
CT Scan R Tracheobronc Tree w Oth Contrast, Unenh, Enhance
Computerized Tomography (CT Scan) of R Tracheobronc Tree
CT Scan of R Tracheobronc Tree using H Osm Contrast
CT Scan R Tracheobronc Tree w L Osm Contrast, Unenh, Enhance
CT Scan R Tracheobronc Tree w H Osm Contrast, Unenh, Enhance
CT Scan of R Tracheobronc Tree using L Osm Contrast