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 CW1BSZ
Planar Nucl Med Imag of Head & Neck using Iodine 131
Planar Nucl Med Imag of Head & Neck using Oth Radionuclide
Planar Nucl Med Imag of Head & Neck using Iodine 123
Planar Nucl Med Imag of Head & Neck using Gallium 67
Planar Nucl Med Imag of Head & Neck using Technetium 99m
Planar Nucl Med Imag of Head & Neck using Thallium 201
Planar Nucl Med Imag of Head & Neck using Indium 111