Diverticulum of esophagus, acquired

This code identifies an outpouching or sac-like protrusion that develops in the wall of the esophagus, which is not present at birth but rather acquired over time. These diverticula are typically caused by increased intraluminal pressure or motility disorders, leading to herniation of the esophageal mucosa and submucosa through the muscular layer.

Use this code for patients diagnosed with an esophageal diverticulum that is explicitly documented as acquired, rather than congenital. This diagnosis is often supported by imaging studies such as barium swallows or endoscopy, which visualize the diverticulum.

• Differentiate carefully between acquired and congenital esophageal diverticula; congenital forms would be coded differently.
• Look for documentation specifying the type of acquired diverticulum (e.g., Zenker's, midesophageal, epiphrenic) if available, though this code is general.
• Consider sequencing this code with codes for any underlying esophageal motility disorders or complications (e.g., dysphagia, aspiration pneumonia) if present.