CPT® Code 79300

Radiopharmaceutical therapy by interstitial radioactive colloid administration involves the precise placement of a radioisotope, which is a radioactive form of an element, into a specific area of the body to treat various diseases or conditions. This therapeutic approach utilizes a colloid solution, which is a mixture where tiny particles are dispersed throughout a liquid, allowing for the effective delivery of the radioisotope directly to the targeted tissue. The administration is performed using a syringe and needle, ensuring that the radioisotope is accurately injected into the desired location. The colloids used in this therapy can consist of various metals, such as gold-198 and silver-111, or compounds like phosphorus-32 and Technetium-99m. These substances are chosen based on their radioactive properties and their ability to deliver localized treatment, minimizing exposure to surrounding healthy tissues while maximizing the therapeutic effect on the diseased area.