ICD-10 Code A80.4 – Acute nonparalytic poliomyelitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A80.4 – Acute nonparalytic poliomyelitis
What it is
A80.4 identifies acute poliovirus infection without paralysis. Use it when documentation supports nonparalytic poliomyelitis rather than a paralytic form.
Clinical signs
Clinical features vary; refer to documentation. Typical descriptions may include acute viral illness with neurologic symptoms, but no objective paralysis is recorded.
When to use this code
Use A80.4 when the provider documents acute nonparalytic poliomyelitis, poliovirus infection without paralysis, or a confirmed nonparalytic polio diagnosis. It may also apply when the record clearly distinguishes the illness from paralytic poliomyelitis. Check documentation if the diagnosis is uncertain or only suspected.
Do not use for
Do not use this code for paralytic poliomyelitis, postpolio syndrome, or a nonspecific viral syndrome. If the chart does not clearly state nonparalytic poliomyelitis, check documentation.
Coding tip
Match the code to the provider’s exact wording and confirm that paralysis is absent in the documentation.