A88.1 ICD-10-CM Code: Epidemic vertigo

A88.1 is the ICD-10-CM diagnosis code for epidemic vertigo. Epidemic vertigo is a contagious viral infection that causes sudden dizziness and spinning sensations, often occurring in outbreaks affecting multiple people in a community. It typically resolves on its own within days to weeks. A88.1 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering viral and prion infections of the central nervous system (a80-a89).

A88.1 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Verify documentation confirms epidemic/outbreak context and viral etiology before assigning this code; isolated vertigo cases may require different coding.