| Q25 | Congenital malformations of great arteries |
| Q250 | Patent ductus arteriosus |
| Q251 | Coarctation of aorta |
| Q252 | Atresia of aorta |
| Q2521 | Interruption of aortic arch |
| Q2529 | Other atresia of aorta |
| Q253 | Supravalvular aortic stenosis |
| Q254 | Other congenital malformations of aorta |
| Q2540 | Congenital malformation of aorta unspecified |
| Q2541 | Absence and aplasia of aorta |
| Q2542 | Hypoplasia of aorta |
| Q2543 | Congenital aneurysm of aorta |
| Q2544 | Congenital dilation of aorta |
| Q2545 | Double aortic arch |
| Q2546 | Tortuous aortic arch |
| Q2547 | Right aortic arch |
| Q2548 | Anomalous origin of subclavian artery |
| Q2549 | Other congenital malformations of aorta |
| Q255 | Atresia of pulmonary artery |
| Q256 | Stenosis of pulmonary artery |
| Q257 | Other congenital malformations of pulmonary artery |
| Q2571 | Coarctation of pulmonary artery |
| Q2572 | Congenital pulmonary arteriovenous malformation |
| Q2579 | Other congenital malformations of pulmonary artery |
| Q258 | Other congenital malformations of other great arteries |
| Q259 | Congenital malformation of great arteries, unspecified |
| Q26 | Congenital malformations of great veins |
| Q260 | Congenital stenosis of vena cava |
| Q261 | Persistent left superior vena cava |
| Q262 | Total anomalous pulmonary venous connection |
| Q263 | Partial anomalous pulmonary venous connection |
| Q264 | Anomalous pulmonary venous connection, unspecified |
| Q265 | Anomalous portal venous connection |
| Q266 | Portal vein-hepatic artery fistula |
| Q268 | Other congenital malformations of great veins |
| Q269 | Congenital malformation of great vein, unspecified |
| Q27 | Other congenital malformations of peripheral vascular system Other congenital malformations of peripheral vascular system |
| Q270 | Congenital absence and hypoplasia of umbilical artery |
| Q271 | Congenital renal artery stenosis |
| Q272 | Other congenital malformations of renal artery |
| Q273 | Arteriovenous malformation (peripheral) |
| Q2730 | Arteriovenous malformation, site unspecified |
| Q2731 | Arteriovenous malformation of vessel of upper limb |
| Q2732 | Arteriovenous malformation of vessel of lower limb |
| Q2733 | Arteriovenous malformation of digestive system vessel |
| Q2734 | Arteriovenous malformation of renal vessel |
| Q2739 | Arteriovenous malformation, other site |
| Q274 | Congenital phlebectasia |
| Q278 | Other specified congenital malformations of peripheral vascular system |
| Q279 | Congenital malformation of peripheral vascular system, unspecified |