HCPCS 43242

Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic ultrasound-guided intramural or transmural fine needle aspiration/biopsy(s) (includes endoscopic ultrasound examination of the esophagus, stomach, and either the duodenum and a portion of the jejunum, or the duodenum or a portion of the jejunum, and adjacent structures)

AI EXPLANATION: An upper endoscopic ultrasound with biopsy is an outpatient procedure that evaluates the lining and walls of the upper digestive tract, including the esophagus, stomach, and the first part of the small intestine. A doctor passes a thin, flexible tube with an ultrasound probe attached through the mouth and down the throat. Sound waves generate detailed images of the digestive organs and nearby tissues, allowing the specialist to pinpoint abnormalities and collect small tissue or fluid samples using a specialized needle.