G52.0: Disorders of olfactory nerve

Your olfactory nerve is damaged.

The olfactory nerve runs on both sides of the brain to the mucous membrane in the upper part of the nose.

Damage to the olfactory nerve means you are not able to smell as well as you used to, if at all. You may also perceive smells incorrectly. Damage to both olfactory nerves means your perception of taste can also be impaired.

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).