S84: Injury of nerves at lower leg level

S84.9: Injury of unspecified nerve at lower leg level

Many nerves run from the spinal cord and brain to the organs, skin and muscles in the body. Most nerves have various functions at the same time. For example, part of the nerve controls specific muscles. If this part is damaged, you may no longer be able to use that muscle strongly or at all. Another part of the nerve can be vital for sensing touch or heat on the skin.

Where exactly the symptoms appear depends on where the nerve was damaged.