What is cpt code 74220?

CPT code 74220 refers to a diagnostic imaging procedure for gastrointestinal tract studies, specifically for a barium swallow study. This procedure involves the oral administration of a barium contrast material to visualize the esophagus, stomach, and upper part of the small intestine using X-ray imaging. It is typically used to diagnose conditions such as swallowing difficulties, gastroesophageal reflux, or structural abnormalities.