ICD-10 Code B97.81 – Human metapneumovirus as the cause of diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B97.81 – Human metapneumovirus as the cause of diseases classified elsewhere
What it is
This code identifies human metapneumovirus as the infectious agent causing another condition, such as pneumonia or bronchitis. Use it only when the organism is documented as the cause of a separate diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Reported illness often includes respiratory symptoms such as cough, wheezing, fever, or shortness of breath, but the code itself reflects the identified cause, not the symptom pattern.
When to use this code
Use B97.81 when the record states human metapneumovirus is responsible for a disease classified elsewhere. Pair it with the manifestation code for the specific condition, such as an acute respiratory diagnosis. If the provider documents only viral infection without another condition, check documentation for the appropriate code.
Do not use for
Do not use this code as the principal diagnosis for the clinical illness itself. Do not use it when human metapneumovirus is not documented as the cause, or when another organism is clearly identified instead.
Coding tip
Always code the underlying condition first, then add B97.81 when the provider links human metapneumovirus to that diagnosis.