J11
⚠ Non-billable (Header)Influenza due to unidentified influenza virus
Diseases of the respiratory system (J00-J99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ No additional coding notes for J11
Child Codes (4)
J11.0Influenza due to unidentified influenza virus with pneumoniaJ11.1Influenza due to unidentified influenza virus with other respiratory manifestationsJ11.2Influenza due to unidentified influenza virus with gastrointestinal manifestationsJ11.8Influenza due to unidentified influenza virus with other manifestations
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CodeJ11
BillableNo — Header code
CategoryDiseases of the respiratory system (J00-J99)
Excludes10 rule(s)
Excludes20 note(s)
Child codes4
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)