The Radionuclide Iodine 131 (I is identified by letter "G" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to CW1BG
Planar Nucl Med Imag of Head & Neck using Iodine 131
Planar Nucl Med Imag of Head & Neck using Indium 111
Planar Nucl Med Imag of Head & Neck using Oth Radionuclide
Planar Nucl Med Imag of Head & Neck using Thallium 201
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