CPT code 91132 denotes diagnostic transcutaneous electrogastrography, a noninvasive test that records the stomach's electrical activity to evaluate possible gastric motility disorders. Nationally, this code matters for gastroenterology diagnostic pathways, reimbursement policy for advanced motility testing, and access to specialized noninvasive diagnostics for patients with suspected gastroparesis or related conditions. Payers commonly involved in coverage decisions for this service include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

This publication provides a concise overview of clinical context, payer coverage trends, benchmark expectations, and relevant policy considerations affecting use of CPT code 91132. Readers will find: a clinical summary of when transcutaneous electrogastrography is used; payer coverage landscape and typical reimbursement considerations; common billing and documentation themes to support medical necessity; and areas where policy updates or coding guidance could influence utilization. Where specific data elements were not provided in the input, those fields are noted as unavailable. The focus is national in scope and intended for healthcare policy analysts, coding professionals, and clinical leaders evaluating diagnostic motility services and related billing practices.