CPT® Code 78278

Acute gastrointestinal blood loss imaging is a diagnostic procedure utilized to identify and evaluate instances of acute gastrointestinal bleeding. This imaging technique employs scintigraphy, which is a form of nuclear medicine that utilizes a radiolabeled isotope tracer, specifically 99mTc-sulfur colloid. The process begins with the establishment of an intravenous line through which the radiolabeled tracer is injected directly into the patient's circulatory system. Alternatively, a blood sample may be collected, and the red blood cells (RBCs) are separated using centrifugation. These tagged RBCs are then reintroduced into the patient’s bloodstream. Following the injection of the tracer, the patient is positioned on an imaging table, and a gamma camera is placed over the anterior abdomen and pelvis. The imaging is conducted at predetermined intervals, capturing the radioactive energy emitted from the tracer, which is then transformed into visual images or a movie mode display. The physician is responsible for interpreting the results of the blood loss imaging study and generating a comprehensive written report detailing the findings, which is crucial for determining the source and extent of gastrointestinal bleeding.