ICD-10-CM 2027 diagnosis code
J11.0Influenza due to unidentified influenza virus with pneumonia
J11.0 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About J11.0
J11.0 is the ICD-10-CM diagnosis code for influenza due to unidentified influenza virus with pneumonia. It belongs to category J11 (influenza due to unidentified influenza virus), block J09-J18 (influenza and pneumonia) and chapter 10 (diseases of the respiratory system). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.
Within J11 (influenza due to unidentified influenza virus), J11.0 is specifically for influenza due to unidentified influenza virus with pneumonia. Related codes cover with other respiratory manifestations (J11.1), with gastrointestinal manifestations (J11.2) and with other manifestations (J11.8).
To report this condition, pick the subcode that matches the documentation: J11.00 (pneumonia) and J11.08 (pneumonia).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under J11.0
Coding notes
- associated lung abscess, if applicable (J85.1)
Notes that apply from higher levels
Instructions written at a parent level also apply to J11.0.
Broader instructions also apply from J09-J18 Influenza and pneumonia and Chapter 10: Diseases of the respiratory system.
Codes whose notes reference J11.0
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about J11.0
Is J11.0 billable?
- No. J11.0 is a header code. Report one of its more specific subcodes instead.