 
| ICD-10-CM-2023 > Q00-Q99 > Q20-Q28 > Q20 | 
| Q20-Q28 | Congenital malformations of the circulatory system | |
| Q20 | Congenital malformations of cardiac chambers and connections | |
| Excl1.: | dextrocardia with situs inversus (Q89.3) mirror-image atrial arrangement with situs inversus (Q89.3) | |
| Q20.0 | Common arterial trunk | |
| Info: | Persistent truncus arteriosus | |
| Excl1.: | aortic septal defect (Q21.4) | |
| Q20.1 | Double outlet right ventricle | |
| Info: | Taussig-Bing syndrome | |
| Q20.2 | Double outlet left ventricle | |
| Q20.3 | Discordant ventriculoarterial connection | |
| Info: | Dextrotransposition of aorta Transposition of great vessels (complete) | |
| Q20.4 | Double inlet ventricle | |
| Info: | Common ventricle Cor triloculare biatriatum Single ventricle | |
| Q20.5 | Discordant atrioventricular connection | |
| Info: | Corrected transposition Levotransposition Ventricular inversion | |
| Q20.6 | Isomerism of atrial appendages | |
| Info: | Isomerism of atrial appendages with asplenia or polysplenia | |
| Q20.8 | Other congenital malformations of cardiac chambers and connections | |
| Info: | Cor binoculare | |
| Q20.9 | Congenital malformation of cardiac chambers and connections, unspecified | |
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