CPT® Code 89135

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The procedure described by CPT® Code 89135 involves gastric intubation, aspiration, and fractional collections, specifically designed for conducting a gastric secretory study over a duration of one hour. In this procedure, a flexible tube is inserted through the patient's nose or mouth and advanced into the stomach. This tube allows for the aspiration, or drawing out, of gastric fluids. The collected fluid is then analyzed to assess various gastric secretions and functions. This test is crucial for diagnosing conditions related to gastric secretory activity. It is important to note that if the procedure is extended to two hours, CPT® Code 89136 should be used. Additionally, if the stomach is stimulated during the test, resulting in a duration of two hours, CPT® Code 89140 is applicable, and for a three-hour duration with stimulation, CPT® Code 89141 should be utilized. Each of these codes reflects specific variations in the procedure's duration and the conditions under which it is performed, ensuring accurate coding and billing for the services rendered.