H91.3: Deaf mutism, not elsewhere classified

You are deaf.

A person who is unable to hear can sometimes still sometimes pick up individual sounds or noises. Loss of hearing may be caused by disorders of the ear, the acoustic nerve, or the brain.

The ear is a sensory organ that is used to hear and to maintain one's balance. There are 3 different areas in the ear: the outer ear, middle ear and inner ear. The information about sounds and noises goes from the inner ear, via the acoustic nerves, to the brain.

Hearing and speaking are 2 closely related abilities. If a child is deaf, their speech development can be delayed or non-existent. So functioning hearing is important in being able to learn to talk.

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).