The Radionuclide Carbon 11 (C is identified by letter "B" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to C030B
PET Imag of Brain using Oth Radionuclide
PET Imag of Brain using Carbon 11
PET Imag of Brain using Oxygen 15
PET Imag of Brain using Fluorine 18