ICD-9 Diagnosis Code 537.4

Gastric/duodenal fistula

Diagnosis Code 537.4

ICD-9: 537.4
Short Description: Gastric/duodenal fistula
Long Description: Fistula of stomach or duodenum
This is the 2014 version of the ICD-9-CM diagnosis code 537.4

Code Classification
  • Diseases of the digestive system
    • Diseases of esophagus, stomach, and duodenum (530-539)
      • 537 Other disorders of stomach and duodenum

Information for Medical Professionals

Information for Patients


A fistula is an abnormal connection between two parts inside of the body. Fistulas may develop between different organs, such as between the esophagus and the windpipe or the bowel and the vagina. They can also develop between two blood vessels, such as between an artery and a vein or between two arteries.

Some people are born with a fistula. Other common causes of fistulas include

  • Complications from surgery
  • Injury
  • Infection
  • Diseases, such as Crohn's disease or ulcerative colitis

Treatment depends on the cause of the fistula, where it is, and how bad it is. Some fistulas will close on their own. In some cases, you may need antibiotics and/or surgery.

  • Fistula
  • Gastrointestinal fistula

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