Injury to peroneal nerve

This diagnosis code signifies damage to the peroneal nerve, a branch of the sciatic nerve, typically affecting the lower leg and foot. Such injuries can result in motor deficits like foot drop and sensory disturbances in the lateral lower leg and dorsum of the foot.

Apply this code when documentation specifies trauma, compression, or other forms of injury directly impacting the peroneal nerve. This includes cases of nerve contusion, laceration, or entrapment leading to neurological dysfunction. Supporting documentation should clearly identify the peroneal nerve as the affected structure.

• Differentiate from general lower extremity nerve injuries; ensure the peroneal nerve is specifically documented.
• Consider an external cause code (E-code) to describe the circumstances of the injury, if applicable.
• Review for laterality if specified in the documentation (e.g., left vs. right peroneal nerve injury).