 Q21 |
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Congenital malformations of cardiac septa  |
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| Excludes1 |
acquired cardiac septal defect (I51.0)
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 Q21.0 |
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Ventricular septal defect |
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| Q21.1 |
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Atrial septal defect |
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| Excludes2 |
ostium primum atrial septal defect (type I) (Q21.20)
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| Q21.10 |
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Atrial septal defect, unspecified |
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| Q21.11 |
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Secundum atrial septal defect |
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| Fenestrated atrial septum | | Patent or persistent ostium secundum defect (type II) |
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| Q21.12 |
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Patent foramen ovale |
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| Q21.13 |
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Coronary sinus atrial septal defect |
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| Coronary sinus defect | | Unroofed coronary sinus |
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| Q21.14 |
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Superior sinus venosus atrial septal defect |
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| Superior vena cava type atrial septal defect |
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| Q21.15 |
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Inferior sinus venosus atrial septal defect |
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| Inferior vena cava type atrial septal defect |
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| Q21.16 |
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Sinus venosus atrial septal defect, unspecified |
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| Sinus venosus defect, NOS |
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| Q21.19 |
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Other specified atrial septal defect |
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| Common atrium | | Other specified atrial septal abnormality |
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| Q21.2 |
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Atrioventricular septal defect |
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| Atrioventricular canal defect | | Endocardial cushion defect | | Ostium primum atrial septal defect (type I) |
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| Q21.20 |
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Atrioventricular septal defect, unspecified as to partial or complete |
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| Atrioventricular canal, NOS | | Endocardial cushion defect NOS | | Ostium primum atrial septal defect (type I) NOS |
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| Q21.21 |
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Partial atrioventricular septal defect |
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| Incomplete atrioventricular canal | | Incomplete atrioventricular septal defect | | Incomplete endocardial cushion defect | | Ostium primum atrial septal defect (type I) with separate atrioventricular valves | | Partial atrioventricular canal | | Partial endocardial cushion defect |
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| Q21.22 |
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Transitional atrioventricular septal defect |
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| Intermediate atrioventricular canal | | Intermediate atrioventricular septal defect | | Intermediate endocardial cushion defect | | Ostium primum atrial septal defect (type I) with separate atrioventricular valves and a small or restrictive inlet VSD | | Transitional atrioventricular canal | | Transitional endocardial cushion defect |
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| Q21.23 |
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Complete atrioventricular septal defect |
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| Common atrioventricular canal | | Common atrioventricular septal defect | | Common endocardial cushion defect | | Ostium primum atrial septal defect (type I) with common atrioventricular valve and a moderate or larger inlet VSD |
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| Q21.3 |
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Tetralogy of Fallot |
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| Ventricular septal defect with pulmonary stenosis or atresia, dextroposition of aorta and hypertrophy of right ventricle. |
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| Q21.4 |
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Aortopulmonary septal defect |
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| Aortic septal defect | | Aortopulmonary window |
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| Q21.8 |
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Other congenital malformations of cardiac septa |
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| Eisenmenger's defect | | Pentalogy of Fallot |
| CodeAlso |
, if applicable:
Eisenmenger's complex (I27.83)
Eisenmenger's syndrome (I27.83)
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| Q21.9 |
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Congenital malformation of cardiac septum, unspecified |
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| Septal (heart) defect NOS |
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