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 B522ZZ
CT Scan Intracran Sinus w Oth Contrast, Unenh, Enhance
Computerized Tomography (CT Scan) of Intracranial Sinuses
CT Scan of Intracran Sinus using Oth Contrast
CT Scan of Intracran Sinus using Intravasc Optic Cohere
CT Scan of Intracran Sinus using H Osm Contrast
CT Scan of Intracran Sinus using L Osm Contrast
CT Scan Intracran Sinus w H Osm Contrast, Unenh, Enhance
CT Scan Intracran Sinus w L Osm Contrast, Unenh, Enhance