CPT® Code 89136

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The procedure described by CPT® Code 89136 involves gastric intubation, aspiration, and fractional collections, specifically conducted over a duration of two hours. This process entails the insertion of a tube through the patient's nose or mouth, which is then guided into the stomach. Once the tube is in place, fluid is drawn from the stomach, allowing for the collection of gastric secretions. The aspiration of these fluids is performed over a two-hour period, during which the collected gastric secretions can be analyzed for various diagnostic purposes. This procedure is essential for conducting gastric secretory studies, which help in evaluating the stomach's function and its secretory capabilities. It is important to note that this code is specifically designated for tests that are performed over a two-hour timeframe, distinguishing it from other related codes that apply to different durations or conditions of the test.