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 BR29Z
CT Scan of Lumbar Spine using Oth Contrast
CT Scan of Lumbar Spine using L Osm Contrast
Computerized Tomography (CT Scan) of Lumbar Spine
CT Scan of Lumbar Spine using H Osm Contrast