ICD-10 Diagnosis Code K31

Other diseases of stomach and duodenum

Diagnosis Code K31

ICD-10: K31
Short Description: Other diseases of stomach and duodenum
Long Description: Other diseases of stomach and duodenum
This is the 2018 version of the ICD-10-CM diagnosis code K31

Not Valid for Submission
The code K31 is a "header" and not valid for submission for HIPAA-covered transactions.

Code Classification
  • Diseases of the digestive system (K00–K93)
    • Diseases of esophagus, stomach and duodenum (K20-K31)
      • Other diseases of stomach and duodenum (K31)

Information for Patients


Stomach Disorders

Also called: Gastric disorders

Your stomach is an organ between your esophagus and small intestine. It is where digestion of protein begins. The stomach has three tasks. It stores swallowed food. It mixes the food with stomach acids. Then it sends the mixture on to the small intestine.

Most people have a problem with their stomach at one time or another. Indigestion and heartburn are common problems. You can relieve some stomach problems with over-the-counter medicines and lifestyle changes, such as avoiding fatty foods or eating more slowly. Other problems like peptic ulcers or GERD require medical attention.

You should see a doctor if you have any of the following:

  • Blood when you have a bowel movement
  • Severe abdominal pain
  • Heartburn not relieved by antacids
  • Unintended weight loss
  • Ongoing vomiting or diarrhea

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

  • Bezoar (Medical Encyclopedia)
  • Dumping Syndrome - NIH (National Institute of Diabetes and Digestive and Kidney Diseases)
  • EGD discharge (Medical Encyclopedia)
  • Gastrectomy (Medical Encyclopedia)
  • Gastritis (Medical Encyclopedia)
  • Gastroparesis (Medical Encyclopedia)
  • Pyloric stenosis (Medical Encyclopedia)
  • Stomach acid test (Medical Encyclopedia)
  • Upper GI and small bowel series (Medical Encyclopedia)


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