M33.0: Juvenile dermatomyositis

Your skin and muscles are inflamed in various places.

The cause of this condition is unknown. It is thought that this disorder involves the immune system producing certain substances. These substances can attack the skin and muscles.

The disorder causes a weakening of the muscles. As a result it can be very hard work just to comb your hair, for example. The inflammations in the skin can cause changes to the skin. For example, the skin may turn anything from pale red to purple, or swell up.

In your case, the condition appeared before you were 16.

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).