K38.3: Fistula of appendix

You have an additional connection between the appendix and other organs.

The appendix is usually located on the right side attached to the first part of the large intestine. The first part of the large intestine is also known as the cecum.

The appendix is usually connected to the large intestine. You have an additional connection between the appendix and other organs. This connection can proceed outward from the appendix into other organs or through the skin. Such an additional connection may for instance may be produced by an inflammation of the appendix. Fluids can flow outward or into other organs through this connection. Such fluids can be pus or feces.

This disease can give you a high temperature and make you feel weak. It is also possible that you will have abdominal pain.

Additional indicator

On medical documents, the ICD code is often appended by letters that indicate the diagnostic certainty or the affected side of the body.

  • G: Confirmed diagnosis
  • V: Tentative diagnosis
  • Z: Condition after
  • A: Excluded diagnosis
  • L: Left
  • R: Right
  • B: Both sides

Further information


This information is not intended for self-diagnosis and does not replace professional medical advice from a doctor. If you find an ICD code on a personal medical document, please also note the additional indicator used for diagnostic confidence.
Your doctor will assist you with any health-related questions and explain the ICD diagnosis code to you in a direct consultation if necessary.


Provided by the non-profit organization “Was hab’ ich?” gemeinnützige GmbH on behalf of the Federal Ministry of Health (BMG).