G56.1: Other lesions of median nerve

A nerve in your arm is damaged.

This nerve runs the entire length of the arm, from the shoulder to the hand. These nerves enable us to, for example, move our thumb and flex our fingers. The nerve is also responsible for sensation in the thumb, the index finger and the middle finger.

The nerve may be damaged due to injuries or to pressure. The damage may be lasting or temporary.

This nerve in your arm has been damaged. This can cause, for example, pain, tingling or numbness in one’s hand. It may also no longer be possible to move the fingers as well as normal. Then one cannot make a fist any more, for example.

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.


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