Below is a list summarizing the CPT codes for introduction procedures on the lymph nodes and lymphatic channels.
CPT Code 38790
CPT 38790 describes a procedure for injection lymphangiography.
CPT Code 38792
CPT 38792 describes a procedure involving injecting a radioactive tracer to identify a sentinel node.
CPT Code 38794
CPT 38794 describes cannulation of the thoracic duct.