ICD-10 Code A88.1 – Epidemic Vertigo (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A88.1 – Epidemic vertigo
What it is
A88.1 identifies epidemic vertigo, a condition marked by sudden dizziness or vertigo occurring in a group or outbreak setting. Use this code when the diagnosis is specifically documented as epidemic vertigo.
Clinical signs
Typical findings include spinning sensation, imbalance, nausea, and difficulty walking. Clinical features vary; refer to documentation for the outbreak context and any associated neurologic or infectious details.
When to use this code
Use A88.1 when the provider documents epidemic vertigo as the confirmed diagnosis, especially in an outbreak or cluster of cases. Apply it when the record clearly distinguishes this condition from nonspecific dizziness, benign positional vertigo, or other vestibular disorders. Check documentation if the cause is not stated.
Do not use for
Do not use this code for general dizziness, lightheadedness, or vertigo without an epidemic context. Also avoid it when another specific vestibular, neurologic, or infectious diagnosis is documented.
Coding tip
Code A88.1 only when “epidemic vertigo” is explicitly documented; otherwise query for the specific dizziness or vertigo diagnosis.