I67.6: Nonpyogenic thrombosis of intracranial venous system

The veins in your brain have been blocked by blood clots. As a result, the blood is unable to flow properly.

The veins carry the blood back to the heart from the brain. In your case, a blood clot has formed in the veins in your brain. This has blocked the vein. The blood is then no longer able to flow properly. The blood can then get blocked as a result. The brain may be damaged as a result.

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).