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Q33 Congenital malformations of lung

ICD-10-CM category Q33 sits in Chapter 17 (Congenital malformations, deformations and chromosomal abnormalities, Q00-Q99). It contains 9 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Billable codes in Q33

CodeDescription
Q33.0Congenital cystic lung
Q33.1Accessory lobe of lung
Q33.2Sequestration of lung
Q33.3Agenesis of lung
Q33.4Congenital bronchiectasis
Q33.5Ectopic tissue in lung
Q33.6Congenital hypoplasia and dysplasia of lung
Q33.8Other congenital malformations of lung
Q33.9Congenital malformation of lung, unspecified

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