ICD-10-CM Book 2026 Edition

Chapters  /  Chapter 17  /  Q30-Q34

Congenital malformations of the respiratory system (Q30-Q34)

Q30 Congenital malformations of nose
Excludes1 congenital deviation of nasal septum (Q67.4)
Q30.0 Choanal atresia
Atresia of nares (anterior) (posterior)
Congenital stenosis of nares (anterior) (posterior)
Q30.1 Agenesis and underdevelopment of nose
Congenital absent of nose
Q30.2 Fissured, notched and cleft nose
Q30.3 Congenital perforated nasal septum
Q30.8 Other congenital malformations of nose
Accessory nose
Congenital anomaly of nasal sinus wall
Q30.9 Congenital malformation of nose, unspecified
Q31 Congenital malformations of larynx
Excludes1 congenital laryngeal stridor NOS (P28.89)
Q31.0 Web of larynx
Glottic web of larynx
Subglottic web of larynx
Web of larynx NOS
Q31.1 Congenital subglottic stenosis
Q31.2 Laryngeal hypoplasia
Q31.3 Laryngocele
Q31.5 Congenital laryngomalacia
Q31.8 Other congenital malformations of larynx
Absence of larynx
Agenesis of larynx
Atresia of larynx
Congenital cleft thyroid cartilage
Congenital fissure of epiglottis
Congenital stenosis of larynx NEC
Posterior cleft of cricoid cartilage
Q31.9 Congenital malformation of larynx, unspecified
Q32 Congenital malformations of trachea and bronchus
Excludes1 congenital bronchiectasis (Q33.4)
Q32.0 Congenital tracheomalacia
Q32.1 Other congenital malformations of trachea
Atresia of trachea
Congenital anomaly of tracheal cartilage
Congenital dilatation of trachea
Congenital malformation of trachea
Congenital stenosis of trachea
Congenital tracheocele
Q32.2 Congenital bronchomalacia
Q32.3 Congenital stenosis of bronchus
Q32.4 Other congenital malformations of bronchus
Absence of bronchus
Agenesis of bronchus
Atresia of bronchus
Congenital diverticulum of bronchus
Congenital malformation of bronchus NOS
Q33 Congenital malformations of lung
Q33.0 Congenital cystic lung
Congenital cystic lung disease
Congenital honeycomb lung
Congenital polycystic lung disease
Excludes1 cystic fibrosis (E84.0)
cystic lung disease, acquired or unspecified (J98.4)
Q33.1 Accessory lobe of lung
Azygos lobe (fissured), lung
Q33.2 Sequestration of lung
Q33.3 Agenesis of lung
Congenital absence of lung (lobe)
Q33.4 Congenital bronchiectasis
Q33.5 Ectopic tissue in lung
Q33.6 Congenital hypoplasia and dysplasia of lung
Excludes1 pulmonary hypoplasia associated with short gestation (P28.0)
Q33.8 Other congenital malformations of lung
Q33.9 Congenital malformation of lung, unspecified
Q34 Other congenital malformations of respiratory system
Excludes2 congenital central alveolar hypoventilation syndrome (G47.35)
Q34.0 Anomaly of pleura
Q34.1 Congenital cyst of mediastinum
Q34.8 Other specified congenital malformations of respiratory system
Atresia of nasopharynx
Q34.9 Congenital malformation of respiratory system, unspecified
Congenital absence of respiratory system
Congenital anomaly of respiratory system NOS