ICD-10 Code B97.1 – Enterovirus as the cause of diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B97.1 – Enterovirus as the cause of diseases classified elsewhere
What it is
This code identifies enterovirus as the infectious agent causing another condition, not the condition itself. Use it when the record links an enterovirus infection to a separate diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Enterovirus infections may be associated with fever, rash, respiratory symptoms, or neurologic findings, depending on the site and severity of disease.
When to use this code
Use B97.1 when the clinician documents enterovirus as the cause of a disease classified elsewhere, such as a secondary diagnosis tied to another primary condition. It is appropriate only when the chart clearly identifies enterovirus as the causative organism. If the record does not specify the virus, check documentation.
Do not use for
Do not use this code for the primary illness itself, such as meningitis, pneumonia, or rash, unless the provider identifies enterovirus as the cause. Do not assign it when another organism is documented instead.
Coding tip
Code the underlying condition first, then add B97.1 only when the provider explicitly documents enterovirus as the cause.