J11.8Influenza due to unidentified influenza virus with other manifestations

J11.8 is the ICD-10-CM diagnosis code for influenza due to unidentified influenza virus with other manifestations. 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 4 subcodes must be used instead.

Within J11, choose J11.8 (with other manifestations) only when documentation doesn't support a more specific option: with pneumonia (J11.0), with other respiratory manifestations (J11.1) and with gastrointestinal manifestations (J11.2).

To report this condition, pick the subcode that matches the documentation: J11.81 (encephalopathy), J11.82 (myocarditis), J11.83 (media) and J11.89 (manifestations).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.