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ICD-10-CM Diagnosis Codes →
section notes
17. Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) →
section notes
Q20-Q28 Congenital malformations of the circulatory system (Q20-Q28) →
section notes
Q21 Congenital malformations of cardiac septa →
section notes
Q21.0   Ventricular septal defect
Q21.10‑Q21.19   Q21.1 Atrial septal defect
Q21.20‑Q21.23   Q21.2 Atrioventricular septal defect
Q21.3   Tetralogy of Fallot
Q21.4   Aortopulmonary septal defect
Q21.8   Other congenital malformations of cardiac septa
Q21.9   Congenital malformation of cardiac septum, unspecified
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