Other specified degenerative diseases of nervous system

This code represents a range of neurodegenerative conditions affecting the central or peripheral nervous system that are not classified elsewhere. These are progressive disorders characterized by the gradual loss of neuronal structure or function, leading to neurological deficits. It encompasses various rare or atypical degenerative neurological syndromes.

Use this code when documentation specifies a degenerative neurological condition that does not have a more specific ICD-10-CM code. Examples include certain forms of spinocerebellar ataxia not otherwise specified, specific types of hereditary neuropathies, or other defined but uncommon neurodegenerative disorders. The physician's notes must clearly state the specific degenerative disease.

• Ensure the documentation explicitly states a "degenerative disease of the nervous system" and that no more specific code is available.
• Avoid using this code for symptoms only; a definitive diagnosis of a degenerative disease must be present.
• Review the Excludes1 and Excludes2 notes for G31 to prevent incorrect coding, especially regarding Alzheimer's, Parkinson's, and other specifically coded neurodegenerative diseases.