ICD-10-CM > J00-J99 > J09-J18 > J11 J11 Influenza due to unidentified influenza virus Non-Billable/Non-Specific Codes J11.0Influenza due to unidentified influenza virus with pneumoniaJ11.00Influenza due to unidentified influenza virus with unspecified type of pneumoniaJ11.08Influenza due to unidentified influenza virus with specified 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 manifestationsJ11.81Influenza due to unidentified influenza virus with encephalopathyJ11.82Influenza due to unidentified influenza virus with myocarditisJ11.83Influenza due to unidentified influenza virus with otitis mediaJ11.89Influenza due to unidentified influenza virus with other manifestations