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 CW16SZ
Planar Nucl Med Imag of Chest & Neck using Technetium 99m
Planar Nucl Med Imag of Chest & Neck using Iodine 123
Planar Nucl Med Imag of Chest & Neck using Iodine 131
Planar Nucl Med Imag of Chest & Neck using Oth Radionuclide
Planar Nucl Med Imag of Chest & Neck using Indium 111
Planar Nucl Med Imag of Chest & Neck using Thallium 201
Planar Nucl Med Imag of Chest & Neck using Gallium 67