A 32-year-old is in the outpatient clinic for an esophagoscopy due to increased difficulty swallowing with his eosinophilic esophagitis. The flexible scope is inserted in the mouth and into the

esophagus. Examination of the esophagus noted narrowing in the distal esophagus. Following an injection of Kenalog, a transendoscopic balloon dilation was performed in the area of

stenosis. Inflation was repeated eventually reaching 18 mm in diameter. What CPT® coding is reported for this procedure?