Nasal Obstruction

**Definition:** Any hindrance to the passage of air into and out of the nose. The obstruction may be unilateral or bilateral, and may involve any part of the NASAL CAVITY.

**Tree numbers:** - C08.460.525 - C08.618.846.185.525 - C09.603.525

**Synonyms:** - Nasal Airway Obstruction - Nasal Blockage