Gastric diverticulum

This code identifies an acquired outpouching or sac-like protrusion of the stomach wall. These diverticula are typically asymptomatic but can cause symptoms such as epigastric pain, nausea, or bleeding if they become inflamed or ulcerated. They are distinct from congenital anomalies.

Assign this code when documentation specifies an acquired gastric diverticulum. This diagnosis is often made incidentally during imaging studies like endoscopy, barium swallow, or CT scans. Ensure the documentation clearly indicates an acquired, rather than congenital, origin.

• Do not code with Q40.2 (congenital diverticulum of stomach) as per Excludes1 note.
• Look for terms like "acquired gastric diverticulum" or "true/false diverticulum of the stomach."
• If symptoms are present, code the associated symptoms (e.g., K92.2 for gastrointestinal hemorrhage) in addition to the diverticulum.