CPT® Code 43198

Esophagoscopy, flexible, transnasal, is a medical procedure that involves the use of a flexible endoscope to visualize the esophagus. This procedure is performed by introducing the endoscope through the patient's nose, allowing for a less invasive approach compared to traditional methods. The flexible endoscope is advanced into the esophagus, enabling the physician to examine critical areas such as the velopharyngeal closure, the base of the tongue, and the hypopharynx. During the procedure, vocal cord motion is assessed, and the pharyngeal musculature is evaluated for any abnormalities. As the endoscope reaches the cricopharyngeus, the patient may be instructed to burp or swallow, which aids in the smooth passage of the scope into the esophagus. The endoscope is then advanced along the entire length of the esophagus until it reaches the gastroesophageal junction. Any abnormalities observed during this examination are carefully noted. After the thorough inspection, the endoscope is withdrawn, allowing for a complete examination of the esophagus's circumference. If any suspicious areas are identified, biopsy forceps are introduced through the endoscope's biopsy channel. The forceps are opened to capture a tissue sample, which is then removed for further analysis. This procedure allows for the collection of one or more tissue samples, which are sent for laboratory analysis to aid in diagnosis and treatment planning.