MCMCB Pro
G32.89

G32.89Other specified degenerative disorders of nervous system in diseases classified elsewhere

Billable / specific codeICD-10-CM

G32.89 is a billable, specific ICD-10-CM code for other specified degenerative disorders of nervous system in diseases classified elsewhere. It is valid for submission on a claim.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Degenerative encephalopathy in diseases classified elsewhere

Risk adjustment

G32.89 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

G32.89 is named in 1 Medicare coverage policy 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A57204Billing and Coding: MRI and CT Scans of the Head and Neck

How G32.89 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to G32.89.

  • Encephalopathydegenerative, in specified disease NEC

Related codes at this level

Codes that share G32.8. If G32.89 is not quite right, the correct code is usually one of these.

Questions about G32.89

Is G32.89 a billable ICD-10-CM code?
Yes. G32.89 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does G32.89 sit in the tabular list?
Diseases of the nervous system (G00-G99), in the block Other degenerative diseases of the nervous system (G30-G32).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.