G56.2: Lesion of ulnar nerve

This nerve runs the entire length of the arm, from the shoulder to the hand. The nerve enables us to move our fingers, for example. The nerve is also responsible for sensation in the little finger and the ring 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, tingling on the outside of one’s hand or little finger. One may also have a numb sensation. It may also no longer be possible to move the fingers as well as normal. The person may then be unable to flex their fingers properly any more, for example.

Patient Disclaimer

The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.

If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.

For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.