ICD-10 Code J10.01 – Influenza due to other identified influenza virus with the same other identified influenza virus pneumonia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J10.01 – Influenza due to other identified influenza virus with the same other identified influenza virus pneumonia
What it is
This code identifies influenza caused by another specified influenza virus, with pneumonia documented as the associated manifestation. Use it when the record names the virus type and confirms pneumonia linked to the influenza infection.
Clinical signs
Typical findings include acute influenza symptoms such as fever, cough, sore throat, myalgias, and fatigue, along with clinical or imaging evidence of pneumonia. Clinical features vary; refer to documentation.
When to use this code
Use J10.01 when the provider documents influenza from an identified influenza virus and explicitly states pneumonia. You should code the documented viral type, not a nonspecific influenza diagnosis. If the chart only says “flu” or does not specify pneumonia, check documentation.
Do not use for
Do not use this code for seasonal influenza without a specified virus type, or for pneumonia without documented influenza. If the record does not link pneumonia to the influenza infection, check documentation.
Coding tip
Verify that both the influenza virus type and pneumonia are clearly documented before assigning J10.01.