ICD-10 Code B97.10 – Unspecified enterovirus as the cause of diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B97.10 – Unspecified enterovirus as the cause of diseases classified elsewhere
What it is
This code identifies an unspecified enterovirus documented as the infectious cause of another condition. It is used when the enterovirus is named as the cause, but the related disease is coded elsewhere.
Clinical signs
Clinical features vary; refer to documentation. Enterovirus infections may be associated with nonspecific viral illness, and the record should show that the organism is the cause of a separate diagnosed condition.
When to use this code
Use B97.10 when the provider states that an unspecified enterovirus is causing a condition classified in another chapter, such as a linked infectious or inflammatory diagnosis. Pair it with the code for the manifestation or primary disease. If the documentation does not clearly identify enterovirus, check documentation.
Do not use for
Do not use this code for a primary enterovirus infection when a more specific diagnosis code describes the illness. Do not assign it if the chart only mentions a suspected viral cause without confirmation.
Coding tip
Always code the underlying condition first, then add B97.10 only when the record explicitly identifies enterovirus as the cause.