| ICD Code | Description |
|---|---|
| 530 | Diseases of esophagus |
| 531 | Gastric ulcer |
| 532 | Duodenal ulcer |
| 533 | Peptic ulcer site unspecified |
| 534 | Gastrojejunal ulcer |
| 535 | Gastritis and duodenitis |
| 536 | Disorders of function of stomach |
| 537 | Other disorders of stomach and duodenum |
| 538 | Gastrointestinal mucositis (ulcerative) |
| 539 | Complications of bariatric procedures |