Other degenerative diseases of the nervous system (G30-G32)
chapter 6: Diseases of the Nervous System
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Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers default dominant or nondominant side for hemiplegia and monoplegia, and use and sequencing of G89 pain codes, including postoperative, chronic, and neoplasm-related pain.
- Dominant/nondominant side (page 45)
- Pain - Category G89 (page 45)
All codes under G30-G32
G30-G32 can't be used on a claim. Pick a billable code below; grey headings group them.
- G30Alzheimer's disease
- G30.0Alzheimer's disease with early onset
- G30.1Alzheimer's disease with late onset
- G30.8Other Alzheimer's disease
- G30.9Alzheimer's disease, unspecified
- 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
- G31.8Other specified degenerative diseases of nervous system
- 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
- G31.9Degenerative disease of nervous system, unspecified
- G32Other degenerative disorders of nervous system in diseases classified elsewhere
- G32.0Subacute combined degeneration of spinal cord in diseases classified elsewhere
- G32.8Other specified degenerative disorders of nervous system in diseases classified elsewhere
- G32.81Cerebellar ataxia in diseases classified elsewhere
- G32.89Other specified degenerative disorders of nervous system in diseases classified elsewhere
G30-G32 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Alzheimer's Disease
Alzheimer's disease (AD) is the most common form of dementia among older people. Dementia is a brain disorder that seriously affects thinking and memory skills. If you have AD, it can impair your ability to reason or learn new skills until it becomes difficult to complete daily activities.
Read more about alzheimer's disease on MedlinePlus