ICD-10-CM · Chapter 6 · G00–G99
G31.8
Other specified degenerative diseases of nervous system
Diseases of the nervous system
Heads up:this is a parent code. It's typically not directly billable — you need to drill down to a more specific child code (one with additional digits) to use on a claim.
Quick facts
- Code
- G31.8
- Type
- Category / header (non-billable)
- ICD-10-CM chapter
- Chapter 6 — Diseases of the nervous system
- Category
- G31 — Other degenerative diseases of nervous system, not elsewhere classified
- Specificity
- 4 characters
How coders use this code
ICD-10-CM G31.8 is a category (header) for other specified degenerative diseases of nervous system. It is generally not reported directly on a claim — coders drill down to a more specific child code (one with additional characters) that matches the documentation. Use the related codes below to find the billable code that fits, and verify against the annual NCHS/CMS guidelines.
Related codes in G31
- G31Other degenerative diseases of nervous system, not elsewhere classified
- G31.0Frontotemporal dementia
- G31.01Pick's disease
- G31.09Other frontotemporal neurocognitive disorder
- G31.1Senile degeneration of brain, not elsewhere classified
- G31.2Degeneration of nervous system due to alcohol
- G31.80Leukodystrophy, unspecified
- G31.81Alpers disease
- G31.82Leigh's disease
- G31.83Neurocognitive disorder with Lewy bodies
- G31.84Mild cognitive impairment of uncertain or unknown etiology
- G31.85Corticobasal degeneration
- G31.86Alexander disease
- G31.87Primary progressive apraxia of speech
- G31.89Other specified degenerative diseases of nervous system
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