CPT® Code 91132

Diagnostic transcutaneous electrogastrography (EGG) is a non-invasive procedure that assesses the electrical activity of the stomach by placing sensors on the skin of the abdomen. This technique is particularly useful for patients experiencing gastrointestinal symptoms such as persistent nausea, vomiting, early satiety, and epigastric discomfort. The primary goal of EGG is to diagnose gastrointestinal motility disorders and gastric dysrhythmias, which can significantly impact a patient's quality of life. During the procedure, recordings are taken from multiple standardized positions on the abdominal wall, allowing for the identification of the site with the highest amplitude of electrical activity. This site is then selected for further analysis, where additional recordings are made to evaluate changes in EGG amplitude and frequency. The physician plays a crucial role in interpreting the EGG recordings, ultimately providing a written report that details the findings and any potential implications for the patient's gastrointestinal health.