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 C710YZ
Planar Nucl Med Imag of Bone Marrow using Technetium 99m
Planar Nucl Med Imag of Bone Marrow using Indium 111
Planar Nucl Med Imag of Bone Marrow using Oth Radionuclide