Injury to cutaneous sensory nerve, lower limb

This code signifies damage to the sensory nerves located in the skin of the lower extremities. This injury typically results in altered sensation such as numbness, tingling, or pain, without affecting motor function. It specifically refers to trauma impacting the superficial nerve fibers responsible for touch, temperature, and pain perception.

Use this code for documented cases of traumatic injury to a cutaneous sensory nerve of the leg, ankle, or foot. This applies when the nerve damage is directly attributable to an external force, such as a laceration, contusion, or crush injury, and sensory deficits are present. Documentation should clearly indicate the mechanism of injury and the resulting sensory impairment.

• Differentiate from nerve root or plexus injuries, which involve more proximal and often motor-affecting nerves.
• Ensure documentation specifies "sensory" involvement; if motor function is also affected, a more comprehensive nerve injury code may be appropriate.
• Consider an external cause code (E-code) to describe the circumstances of the injury.