| J0391 | Acute recurrent tonsillitis, unspecified |
| J04 | Acute laryngitis and tracheitis |
| J040 | Acute laryngitis |
| J041 | Acute tracheitis |
| J0410 | Acute tracheitis without obstruction |
| J0411 | Acute tracheitis with obstruction |
| J042 | Acute laryngotracheitis |
| J043 | Supraglottitis, unspecified |
| J0430 | Supraglottitis, unspecified, without obstruction |
| J0431 | Supraglottitis, unspecified, with obstruction |
| J05 | Acute obstructive laryngitis [croup] and epiglottitis |
| J050 | Acute obstructive laryngitis [croup] |
| J051 | Acute epiglottitis |
| J0510 | Acute epiglottitis without obstruction |
| J0511 | Acute epiglottitis with obstruction |
| J06 | Acute upper respiratory infections of multiple and unspecified sites |
| J060 | Acute laryngopharyngitis |
| J069 | Acute upper respiratory infection, unspecified |
| J09 | Influenza due to certain identified influenza viruses |
| J09X | Influenza due to identified novel influenza A virus |
| J09X1 | Influenza due to identified novel influenza A virus with pneumonia |
| J09X2 | Flu due to ident novel influenza A virus w oth resp manifest Influenza due to identified novel influenza A virus with other respiratory manifestations |
| J09X3 | Influenza due to ident novel influenza A virus w GI manifest Influenza due to identified novel influenza A virus with gastrointestinal manifestations |
| J09X9 | Influenza due to identified novel influenza A virus with other manifestations |
| J10 | Influenza due to other identified influenza virus |
| J100 | Influenza due to other identified influenza virus with pneumonia |
| J1000 | Influenza due to other identified influenza virus with unspecified type of pneumonia |
| J1001 | Flu due to oth ident flu virus w same oth ident flu virus pn Influenza due to other identified influenza virus with the same other identified influenza virus pneumonia |
| J1008 | Influenza due to other identified influenza virus with other specified pneumonia |
| J101 | Influenza due to other identified influenza virus with other respiratory manifestations |
| J102 | Influenza due to other identified influenza virus with gastrointestinal manifestations |
| J108 | Influenza due to other identified influenza virus with other manifestations |
| J1081 | Influenza due to other identified influenza virus with encephalopathy |
| J1082 | Influenza due to other identified influenza virus with myocarditis |
| J1083 | Influenza due to other identified influenza virus with otitis media |
| J1089 | Influenza due to other identified influenza virus with other manifestations |
| J11 | Influenza due to unidentified influenza virus |
| J110 | Influenza due to unidentified influenza virus with pneumonia Influenza due to unidentified influenza virus with pneumonia |
| J1100 | Influenza due to unidentified influenza virus with unspecified type of pneumonia |
| J1108 | Influenza due to unidentified influenza virus with specified pneumonia |
| J111 | Influenza due to unidentified influenza virus with other respiratory manifestations |
| J112 | Influenza due to unidentified influenza virus with gastrointestinal manifestations |
| J118 | Influenza due to unidentified influenza virus w oth manifest Influenza due to unidentified influenza virus with other manifestations |
| J1181 | Influenza due to unidentified influenza virus with encephalopathy |
| J1182 | Influenza due to unidentified influenza virus with myocarditis |
| J1183 | Influenza due to unidentified influenza virus w otitis media Influenza due to unidentified influenza virus with otitis media |
| J1189 | Influenza due to unidentified influenza virus w oth manifest Influenza due to unidentified influenza virus with other manifestations |
| J12 | Viral pneumonia, not elsewhere classified |
| J120 | Adenoviral pneumonia |
| J121 | Respiratory syncytial virus pneumonia |