I67.10: Cerebral aneurysm, acquired

One of the blood vessels in your brain has become enlarged.

Several blood vessels carry blood from the heart to the brain and from the brain to the heart. You have a blood vessel that is wider than normal. This can occur, for example, when someone has persistent high blood pressure, or if the vascular wall weakens.

Most people are completely unaware of having this type of blood vessel dilation. However, there is a risk that the blood vessel wall could rupture.

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).