N90.4: Leukoplakia of vulva

The skin or mucous membrane on your external genital organs has changed.

The external female genital organs include the labia, the clitoris and the skin around the vagina.

The tissue in the body is made up of cells. A tissue sample is taken to examine the cells in the skin or mucous membrane.

Cells in the top layer of your skin or mucous membrane have multiplied and mutated. The skin or mucous membrane has become a little firmer at the affected site and white patches are forming.

These changes to the skin or mucous membrane do not usually produce any symptoms. However, the cells may alter more over time and start to multiply uncontrollably. This may lead to cancer.

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).