I77.0: Arteriovenous fistula, acquired

A connection has formed between one of your arteries and a vein.

Arteries are blood vessels that transport blood away from the heart. They supply all the tissue in the body with oxygen-rich blood.

Veins are blood vessels that transport the blood back to the heart. A connection between an artery and a vein can cause the affected blood vessels to get wider. The heart may then have to pump far more blood through the body than it normally does. If the heart has to pump more blood than usual, it can become over-strained. This can then cause the person to become breathless and to tire very quickly. A connection between an artery and a vein may also cause no problems at all. A connection between an artery and a vein may occur because of an operation or an injury, for example.

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).