In simple words: This code is for a nuclear medicine test of your nervous system when there isn't a specific code for the exact test you had. Nuclear medicine uses tiny amounts of radioactive materials to create images of your body's structures and functions.

This code is used for diagnostic nuclear medicine procedures on the nervous system that don't have a specific CPT code.

Example 1: A patient with atypical symptoms undergoes a novel PET scan of the brain to evaluate for a rare neurodegenerative disorder not otherwise classifiable with existing CPT codes., A new radiotracer is used in a SPECT scan of the spine to assess nerve damage, and the specific combination of tracer and imaging modality lacks a designated CPT code., Intraoperative nuclear medicine imaging of the brain is performed during a complex neurosurgical procedure, requiring the use of an unlisted code due to the unique nature of the imaging technique employed.