CPT® Code 91037

Esophageal function test, gastroesophageal reflux test with nasal catheter intraluminal impedance electrode(s) placement, recording, analysis and interpretation;

Esophageal function testing, specifically gastroesophageal reflux impedance testing, is a diagnostic procedure designed to assess the functionality of the esophagus in relation to gastroesophageal reflux disease (GERD). This test evaluates esophageal peristalsis, which is the wave-like muscle contractions that move food down the esophagus, and monitors both acidic and non-acidic reflux over an extended duration. The procedure involves the placement of a nasal catheter equipped with intraluminal impedance electrodes, which are specialized sensors that detect changes in electrical resistance within the esophagus. These electrodes are strategically positioned to capture data on the movement of a saline solution and a viscous material as they pass through the esophagus. By analyzing the recordings from these electrodes, healthcare professionals can gain insights into the dynamics of esophageal function, including how effectively the esophagus transports the bolus into the stomach. This comprehensive evaluation is crucial for diagnosing conditions related to esophageal motility and reflux, ultimately guiding appropriate treatment options for patients experiencing symptoms of GERD.