CPT® Code 78227

Hepatobiliary system imaging, including gallbladder when present; with pharmacologic intervention, including quantitative measurement(s) when performed

The CPT® Code 78227 refers to a specialized imaging procedure known as hepatobiliary system imaging, which is crucial for assessing the liver and its associated structures. This imaging technique utilizes a radioactive tracer to visualize the production and flow of bile from the liver to the small intestine. The procedure is particularly significant in evaluating liver function, as it provides insights into bile production and excretion, as well as the condition of the drainage system, including the bile ducts and gallbladder. The term "HIDA scan," which stands for hepatobiliary iminodiacetic acid scan, is commonly used to describe this procedure. During the imaging process, an intravenous catheter is inserted, and the radioactive tracer is injected into the patient's bloodstream. A gamma camera is then employed to capture multiple images as the tracer moves through the body, highlighting the liver, bile ducts, and gallbladder, provided the gallbladder is intact. The continuous imaging allows for real-time observation of the tracer's journey from the liver through the biliary ducts into the gallbladder and subsequently into the duodenum. In the context of CPT® Code 78227, the procedure is enhanced by the administration of pharmacologic interventions, which may include medications aimed at improving the quality of gallbladder images or stimulating gallbladder contraction. Additionally, a gallbladder ejection fraction test may be performed to quantitatively measure the rate at which bile is expelled from the gallbladder, providing further diagnostic information.