ICD-10-CM > Q00-QA0 > Q30-Q34 > Q34 Q34 Other congenital malformations of respiratory system Non-Billable/Non-Specific Type 2 Excludes congenital central alveolar hypoventilation syndrome (G47.35) Codes Q34.0Anomaly of pleuraQ34.1Congenital cyst of mediastinumQ34.8Other specified congenital malformations of respiratory systemQ34.9Congenital malformation of respiratory system, unspecified