CPT® Code 78071

Parathyroid planar imaging is a diagnostic imaging procedure that involves the use of a radiopharmaceutical, specifically technetium-99m (TC-99) sestamibi, which is administered intravenously. This imaging technique is primarily utilized to assess the parathyroid glands, which are responsible for regulating calcium levels in the body. The procedure begins with the acquisition of initial planar images shortly after the radiopharmaceutical is injected. These images are crucial for evaluating any increased uptake of the radiotracer in the parathyroid tissue compared to the thyroid tissue, as abnormal uptake can indicate parathyroid disease. Following this, additional images are captured approximately two hours later to determine if there is any retention of the radiotracer in the parathyroid glands, which can further assist in diagnosing conditions such as hyperparathyroidism. In cases where subtraction studies are indicated, a second radiopharmaceutical that is selectively taken up by the thyroid gland, such as iodine-123 (I-123) or technetium-99m pertechnetate, is administered. This allows for the generation of subtraction images that can enhance the visualization of the parathyroid glands. Recent advancements in this imaging modality have integrated single photon emission computed tomography (SPECT) with parathyroid planar imaging, allowing for a more comprehensive evaluation by combining both functional and anatomical information. This integration significantly improves the sensitivity of detecting parathyroid abnormalities. It is important to note that CPT® code 78070 is designated for parathyroid planar imaging performed alone, while CPT® code 78071 is specifically used when this imaging is combined with tomographic (SPECT) studies. Additionally, CPT® code 78072 is applicable when planar imaging, tomographic (SPECT) studies, and concurrent CT imaging for anatomical localization are all performed together.