Gastritis

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Gastritis is an injury of gastric mucosa that involves epithelial damage, mucosal inflammation, and epithelial cell regeneration except for any epithelial defect. Gastritis is caused by various factors such as infectious agents, drugs, chemical agents, autoimmune reaction and others. Gastritis is diagnosed histopathologically and/or endoscopically. Gastritis is classified as acute and chronic phase by clinical course.

sections/codes in this section (DA42-DA42)

• Autoimmune gastritis  (DA42.0)
• Helicobacter pylori induced gastritis  (DA42.1)
• Eosinophilic gastritis  (DA42.2)
• Lymphocytic gastritis  (DA42.3)
• Allergic gastritis  (DA42.4)
• Gastritis due to duodenogastric reflux  (DA42.5)
• Menetrier disease  (DA42.6)
• Gastritis of unknown aetiology with specific endoscopic or pathological features  (DA42.7)
• Gastritis due to external causes  (DA42.8)
• Gastric phlegmon  (DA42.9)
• Other specified gastritis  (DA42.Y)
• Gastritis, unspecified  (DA42.Z)

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