Congenital malformations of the respiratory system (Q30-Q34) ICD-10-CM
The Q30–Q34 section covers congenital malformations of the respiratory system with 36 ICD-10-CM diagnosis codes, of which 31 are billable in fiscal year 2026. The section is organized into the 5 code ranges listed below.
Code Ranges in This Section 5 ranges · 36 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the Q30–Q34 Code Range
The ICD-10 codes Q30-Q34 cover congenital malformations of the respiratory system. These codes classify birth defects affecting the nose, larynx, trachea, bronchus, lungs, and related structures, used to record specific developmental abnormalities diagnosed in newborns or children.
The range includes Q30 for congenital nose malformations like choanal atresia (Q30.0), a blockage of the nasal passage, also known by terms such as nasal stenosis or congenital atresia of anterior nares. Codes Q31 handle larynx defects, including laryngeal web (Q31.0) and congenital laryngomalacia (Q31.5), which refer to tissue webs and floppiness in the larynx affecting breathing. Malformations of the trachea and bronchus fall under Q32, addressing issues such as tracheomalacia (Q32.0) or abnormal bronchial development. The Q33 series refers to lung malformations, including congenital cystic lung (Q33.0), lung agenesis (Q33.3), and bronchiectasis (Q33.4). Lastly, Q34 covers other congenital respiratory malformations like pleural anomalies and mediastinal cysts.
These codes help medical professionals document rare and complex respiratory birth defects using clinical terms and common synonyms. They are essential for accurate diagnosis, treatment planning, and health record documentation for congenital respiratory conditions.
Questions About This Page
How many codes are in the Q30-Q34 range?
The Q30-Q34 range contains 36 ICD-10-CM diagnosis codes in FY 2026. 31 of them are billable, and the rest are category headers that organize the section.
What conditions does Q30-Q34 cover?
The range covers congenital malformations of the respiratory system. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
