ICD-10 Code A98.4 – Ebola virus disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A98.4 – Ebola virus disease
What it is
A98.4 identifies Ebola virus disease, a severe viral hemorrhagic fever caused by Ebola virus infection. Use it when the record documents confirmed or suspected Ebola illness, not merely exposure or screening.
Clinical signs
Clinical features vary; refer to documentation. Commonly noted findings include fever, weakness, vomiting, diarrhea, and bleeding manifestations, with possible rapid clinical deterioration. Confirm that the chart supports Ebola virus disease rather than another febrile illness.
When to use this code
Use A98.4 when the provider documents Ebola virus disease, Ebola hemorrhagic fever, or a similar diagnosis in the assessment. It may also fit when the note clearly states probable or suspected Ebola infection. Check documentation for the exact wording and encounter context.
Do not use for
Do not use this code for routine fever, nonspecific viral illness, or mere exposure to Ebola without disease. If the record only mentions contact, surveillance, or rule-out status, check documentation for the correct code.
Coding tip
Assign A98.4 only when the diagnosis is explicitly documented and distinguish it from exposure, observation, or differential diagnosis entries.