G59: Mononeuropathy in diseases classified elsewhere

G59.0: Diabetic mononeuropathy

Many nerves run from the spinal cord and brain to the organs, skin and muscles in the body.

Every nerve serves particular parts of the skin or particular muscles, for example. Sensations such as touch, heat, cold and pain are sent to the brain to be perceived via nerves. Nerves also pass on commands to the muscles so that the person can move. Many subconscious processes, such as internal organ functions, are also controlled by nerves.

Various disorders can damage nerves. In your case, the diabetes has damaged a nerve.

When a nerve is damaged, its functionality may be lost, temporarily or permanently. The person may then feel less, or nothing, on their skin. They may also experience a tingling or burning sensation, or pain. They may no longer be able to move their muscles as well, if at all.