G97: Postprocedural disorders of nervous system, not elsewhere classified

G97.9: Postprocedural disorder of nervous system, unspecified

The nervous system includes all the nerves in the body, as well as the brain and the spinal cord. The nerves run from the brain and spinal cord into the body. They convey information in the body.

A disorder of the nervous system can involve a wide variety of symptoms.