F84.0: Childhood autism

You have had autism since you were a young child.

Someone with autism can have great difficulty in interacting with other people and communicating with them. You may find it hard to show your own feelings or understand other people’s feelings. You may also be unable able to speak properly, or even to speak at all.

Autism can also affect other behaviors. You may have very fixed habits and interests, for example. You may also keep repeating particular actions. You may also find it very difficult to come to terms with new situations.

The causes of autism are not yet properly understood. It is thought that various factors can cause autism. For instance, certain genetic changes increase the risk of autism.

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).