461: Acute sinusitis
Includes:
abscess, acute, of sinus (accessory) (nasal)
empyema, acute, of sinus (accessory) (nasal)
infection, acute, of sinus (accessory) (nasal)
inflammation, acute, of sinus (accessory) (nasal)
suppuration, acute, of sinus (accessory) (nasal)
Excludes:
chronic or unspecified sinusitis (473.0-473.9)