B36.1: Tinea nigra

Your skin has been changed by fungi.

Many different germs, mainly bacteria, are found on normal skin. There is normally a certain balance between them. Many of these germs are also beneficial for the skin.

Certain fungi have spread on your skin. This usually affects the inner surfaces of the hands and the soles of the feet. The fungi produce a dark colorant. This is why the affected skin usually turns brown or black. This skin condition is usually harmless.

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).