There are 2 ICD-9-CM codes below 535.6 that define this diagnosis in greater detail. Do not use this code on a reimbursement claim.
Clinical Information
Acute or chronic inflammation of the duodenum. Causes include bacterial and viral infections and gastroesophageal reflux disease. Symptoms include vomiting and abdominal pain
Inflammation of the duodenum (the first part of the small intestine that connects to the stomach)
Inflammation of the duodenum section of the small intestine (intestine, small). Erosive duodenitis may cause bleeding in the upper gi tract and peptic ulcer