ICD-10 Code J10.82 – Influenza due to other identified influenza virus with myocarditis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J10.82 – Influenza due to other identified influenza virus with myocarditis
What it is
This code identifies influenza caused by a confirmed, other identified influenza virus when myocarditis is present. Use it for a documented viral flu infection complicated by inflammation of the heart muscle.
Clinical signs
Clinical features may include flu symptoms with chest discomfort, palpitations, shortness of breath, or signs of cardiac dysfunction. Clinical features vary; refer to documentation.
When to use this code
Use J10.82 when the provider documents influenza from an identified influenza virus and also documents myocarditis. The myocarditis should be linked to the influenza illness in the record. Check documentation if the virus type or cardiac complication is unclear.
Do not use for
Do not use this code for influenza without myocarditis, or for myocarditis not documented as related to influenza. If the influenza virus is not identified, check documentation for a different influenza code.
Coding tip
Confirm both the specific influenza diagnosis and the myocarditis linkage before assigning J10.82.