Respiratory System (J00-J99)
- Epiglottitis (inflammation of the epiglottis).
- Laryngitis, acute (laryngitis).
- Pseudocroup (subglottic laryngitis) – viral laryngitis.
- Tracheitis
- Allergic
- Chemical-irritative
- Infectious
- Mechanical-irritative
Infectious and parasitic diseases (A00-B99).
- Inflammation of the upper respiratory tract:
- Viral: adenoviruses, RS virus, parainfluenza viruses.
- Bacterial: Haemophilus influenzae, Klebsiella pneumoniae, Staphylococcus aureus, Streptococcus pneumoniae.
Symptoms and abnormal clinical and laboratory findings not elsewhere classified (R00-R99).
- Chest pain, unspecified
Injuries, poisonings, and other consequences of external causes (S00-T98)
- Aspiration (inhalation) of a foreign body.