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 CW2BG
Tomo Nucl Med Imag of Head & Neck using Gallium 67
Tomo Nucl Med Imag of Head & Neck using Thallium 201
Tomo Nucl Med Imag of Head & Neck using Oth Radionuclide
Tomo Nucl Med Imag of Head & Neck using Iodine 123
Tomo Nucl Med Imag of Head & Neck using Iodine 131
Tomo Nucl Med Imag of Head & Neck using Indium 111
Tomo Nucl Med Imag of Head & Neck using Technetium 99m
Tomo Nucl Med Imag of Head & Neck using Fluorine 18