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H81.91

H81.91Unspecified disorder of vestibular function, right ear

Billable / specific codeICD-10-CMright

H81.91 is a billable, specific ICD-10-CM code for unspecified disorder of vestibular function, right ear. It is valid for submission on a claim.

Risk adjustment

H81.91 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

H81.91 is named in 8 Medicare coverage policies 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A56497Billing and Coding: Vestibular Function Testing
  • A57118Billing and Coding: Vestibular Function Tests
  • A57204Billing and Coding: MRI and CT Scans of the Head and Neck
  • A57434Billing and Coding: Vestibular and Audiologic Function Studies

Related codes at this level

Codes that share H81.9. If H81.91 is not quite right, the correct code is usually one of these.

Questions about H81.91

Is H81.91 a billable ICD-10-CM code?
Yes. H81.91 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does H81.91 sit in the tabular list?
Diseases of the ear and mastoid process (H60-H95), in the block Diseases of inner ear (H80-H83).
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.