| Q30 | Congenital malformations of nose |
| Q30.0 | Choanal atresia |
| Q30.1 | Agenesis and underdevelopment of nose |
| Q30.2 | Fissured, notched and cleft nose |
| Q30.3 | Congenital perforated nasal septum |
| Q30.8 | Other congenital malformations of nose |
| Q30.9 | Congenital malformation of nose, unspecified |
| Q31 | Congenital malformations of larynx |
| Q31.0 | Web of larynx |
| Q31.1 | Congenital subglottic stenosis |
| Q31.2 | Laryngeal hypoplasia |
| Q31.3 | Laryngocele |
| Q31.5 | Congenital laryngomalacia |
| Q31.8 | Other congenital malformations of larynx |
| Q31.9 | Congenital malformation of larynx, unspecified |
| Q32 | Congenital malformations of trachea and bronchus |
| Q32.0 | Congenital tracheomalacia |
| Q32.1 | Other congenital malformations of trachea |
| Q32.2 | Congenital bronchomalacia |
| Q32.3 | Congenital stenosis of bronchus |
| Q32.4 | Other congenital malformations of bronchus |
| Q33 | Congenital malformations of lung |
| Q33.0 | Congenital cystic lung |
| Q33.1 | Accessory lobe of lung |
| Q33.2 | Sequestration of lung |
| Q33.3 | Agenesis of lung |
| Q33.4 | Congenital bronchiectasis |
| Q33.5 | Ectopic tissue in lung |
| Q33.6 | Congenital hypoplasia and dysplasia of lung |
| Q33.8 | Other congenital malformations of lung |
| Q33.9 | Congenital malformation of lung, unspecified |
| Q34 | Other congenital malformations of respiratory system |
| Q34.0 | Anomaly of pleura |
| Q34.1 | Congenital cyst of mediastinum |
| Q34.8 | Other specified congenital malformations of respiratory system |
| Q34.9 | Congenital malformation of respiratory system, unspecified |