ICD-10-CM
ICD-10 code for Flu: J11.1
The closest CDC title for "Flu" is J11.1, Influenza due to unidentified influenza virus with other respiratory manifestations. J11.1 is a billable code.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under J11, then other CDC titles that name influenza due to unidentified influenza virus with other respiratory manifestations
A header groups codes and is not billed. A billable code is one you can report.
- J11Influenza due to unidentified influenza virusHeader
- J11.0Influenza due to unidentified influenza virus with pneumoniaHeader
- J11.00Influenza due to unidentified influenza virus with unspecified type of pneumoniaBillable
- J11.08Influenza due to unidentified influenza virus with specified pneumoniaBillable
- J11.1Influenza due to unidentified influenza virus with other respiratory manifestationsBillable
- J11.2Influenza due to unidentified influenza virus with gastrointestinal manifestationsBillable
- J11.8Influenza due to unidentified influenza virus with other manifestationsHeader
- J11.81Influenza due to unidentified influenza virus with encephalopathyBillable
- J11.82Influenza due to unidentified influenza virus with myocarditisBillable
- J11.83Influenza due to unidentified influenza virus with otitis mediaBillable
- J11.89Influenza due to unidentified influenza virus with other manifestationsBillable
Use additional code
The CDC tabular list says to add the code named here after this one when it applies.
Use additional code for associated pleural effusion, if applicable (J91.8)
Use additional code for associated sinusitis, if applicable (J01.-)
Related conditions
Related pages
- J11.1 code detailsNotes, nearby codes, CMS-HCC group
- Category J11Every code under it
- Chapter 10Diseases of the respiratory system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Flu?
The closest CDC title for "Flu" is J11.1, Influenza due to unidentified influenza virus with other respiratory manifestations. J11.1 is a billable code.
Is J11.1 billable?
Yes. J11.1 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to J11.1?
The CDC tabular list gives 2 "use additional code" notes for J11.1 and the categories above it. They are listed on this page.
What chapter is J11.1 in?
Chapter 10. Diseases of the respiratory system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.