Q33: Congenital malformations of lung

Codes under Q33 (Congenital malformations of lung). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
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	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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