CPT® Code 78832

Radiopharmaceutical localization of tumor, inflammatory process or distribution of radiopharmaceutical agent(s) (includes vascular flow and blood pool imaging, when performed); tomographic (SPECT) with concurrently acquired computed tomography (CT) transmission scan for anatomical review, localization and determination/detection of pathology, minimum 2 areas (eg, pelvis and knees, chest and abdomen) or separate acquisitions (eg, lung ventilation and perfusion), single day imaging, or single area or acquisition over 2 or more days

The CPT® Code 78832 refers to a specialized imaging procedure known as radiopharmaceutical localization, which is utilized to identify tumors or inflammatory processes within the body. This procedure employs molecular imaging techniques, specifically single photon emission computed tomography (SPECT), in conjunction with a computed tomography (CT) scan that is acquired simultaneously. The use of a radiolabeled isotope tracer is central to this process, as it allows for the visualization of specific areas of interest within the body. The tracer is designed to bind to inflammatory cells or target specific organs based on their physiological functions, enabling the detection of inflammation or tumors, even in their early stages.

During the procedure, an intravenous line is established to facilitate the injection of the radiolabeled isotope tracer directly into the patient's circulatory system. Alternatively, a blood sample may be taken, processed to isolate white or red blood cells, and then tagged with the isotope before being reintroduced into the patient. In some cases, radioactive agents may also be inhaled or ingested, depending on the area being examined. Once administered, the tracer circulates through the body and localizes in areas of inflammation or tumor growth.

The imaging process involves positioning the patient on a specialized imaging table, where a gamma camera capable of performing both SPECT and CT scans is centered over the targeted area. The scanning occurs at predetermined intervals, capturing the radioactive energy emitted from the tracer, which is then converted into detailed images. This hybrid imaging technique provides a comprehensive view of the anatomical structures and any pathological conditions present. The procedure can involve imaging at least two different areas of the body, such as the pelvis and knees or the chest and abdomen, or it may consist of separate acquisitions performed on a single day. Additionally, a single area may be imaged over two or more days. The resulting three-dimensional images are interpreted by a physician, who subsequently generates a written report detailing the findings of the study.