J04.1
Excludes2: chronic tracheitis (J42)
J04
Excludes1: acute obstructive laryngitis [croup] and epiglottitis (J05.-)
Excludes2: laryngismus (stridulus) (J38.5)
Code also: influenza, if present, such as:
influenza due to identified novel influenza A virus with other respiratory manifestations (J09.X2)
influenza due to other identified influenza virus with other respiratory manifestations (J10.1)
influenza due to unidentified influenza virus with other respiratory manifestations (J11.1)