CPT® Code 91133

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 identify gastric dysrhythmias, which can significantly impact a patient's quality of life. During the procedure, the sensors capture the electrical signals generated by the stomach, allowing for a detailed analysis of its motility patterns. In the context of CPT® Code 91133, the procedure is enhanced by the inclusion of provocative testing, which involves additional steps to further evaluate the stomach's response to specific stimuli. This comprehensive approach helps physicians gain a deeper understanding of the patient's gastrointestinal function and aids in formulating an effective treatment plan based on the findings.