ICD-10 Code B97.29 – Other coronavirus as the cause of diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B97.29 – Other coronavirus as the cause of diseases classified elsewhere
What it is
B97.29 identifies coronavirus as the cause of another disease or condition classified elsewhere. Use it when the underlying illness is documented separately and the coronavirus is recorded as the infectious cause.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the record shows a confirmed coronavirus infection linked to another diagnosis, such as respiratory illness or another condition caused by the virus.
When to use this code
Use this code when the provider documents coronavirus as the etiologic agent for a condition coded elsewhere, and the chart supports that relationship. It is appropriate when the infection is not the principal diagnosis by itself. Check documentation for the specific associated condition and whether another coronavirus code is more specific.
Do not use for
Do not use B97.29 for unspecified viral illness or when coronavirus is only suspected. Do not use it if the record identifies a more specific coronavirus code or if the cause is not documented.
Coding tip
Always pair B97.29 with the condition it causes, and verify the provider’s wording before assigning it.