ICD-10 G32.8
Non-Billable HeaderOther specified degenerative disorders of nervous system in diseases classified elsewhere
About ICD-10-CM G32.8
ICD-10-CM code G32.8 represents Other specified degenerative disorders of nervous system in diseases classified elsewhere. This is a non-billable header code in the Nervous System chapter (block G32). The 2026 edition of ICD-10-CM G32.8 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with G32.8. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- superior hemorrhagic polioencephalitis [Wernicke's encephalopathy] (E51.2)
Coding Notes
Code First
- underlying disease, such as:
- amyloidosis cerebral degeneration (E85.-)
- cerebral degeneration (due to) hypothyroidism (E00.0-E03.9)
- cerebral degeneration (due to) neoplasm (C00-D49)
- cerebral degeneration (due to) vitamin B deficiency, except thiamine (E52-E53.-)
Medicare LCD Coverage for G32.8
Local Coverage Determinations (LCDs) from CMS MACs that list G32.8 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing G32.8.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but G32.8 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with G32.8
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To G32.8
Other codes in section G30-G32 (Other degenerative diseases of the nervous system).
ICD-10 G32.8, Billing FAQ
Is ICD-10 code G32.8 billable? +
No, G32.8 is a non-billable header code. Use a more specific child code from block G32 when submitting claims.
What codes are Type 1 Excludes for G32.8? +
Type 1 Excludes (never code together with G32.8): superior hemorrhagic polioencephalitis [Wernicke's encephalopathy] (E51.2)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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