The Isotope Cesium 137 (Cs is identified by number "7" and occupies the 6th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to D713B7
LDR Brachytherapy of Neck Lymph using Oth Isotope
LDR Brachytherapy of Neck Lymph using Californium 252
Low Dose Rate (LDR) Brachytherapy of Neck Lymph using Pd-103
HDR Brachytherapy of Neck Lymph using Californium 252
HDR Brachytherapy of Neck Lymph using Cesium 137
HDR Brachytherapy of Neck Lymph using Oth Isotope
LDR Brachytherapy of Neck Lymph using Iodine 125
HDR Brachytherapy of Neck Lymph using Iridium 192
LDR Brachytherapy of Neck Lymph using Cesium 137
LDR Brachytherapy of Neck Lymph using Iridium 192
LDR Brachytherapy of Neck Lymph using Pd-103, Unidirect
HDR Brachytherapy of Neck Lymph using Pd-103
HDR Brachytherapy of Neck Lymph using Iodine 125