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 CP1BYZ
Planar Nucl Med Imag of Bi Up Extrem using Technetium 99m
Planar Nucl Med Imag of Bi Up Extrem using Oth Radionuclide