| Risk category 1 |
| Atrial septal defect surgery (including atrial septal defect secundum, sinus venosus atrial septal defect, patent foramen ovale closure) |
| Aortopexy |
| Patent ductus arteriosus surgery at age >30 d |
| Coarctation repair at age >30 d |
| Partially anomalous pulmonary venous connection surgery |
| Risk category 2 |
| Aortic valvotomy or valvuloplasty at age >30 d |
| Subaortic stenosis resection |
| Pulmonary valvotomy or valvuloplasty |
| Pulmonary valve replacement |
| Right ventricular infundibulectomy |
| Pulmonary outflow tract augmentation |
| Repair of coronary artery fistula |
| Atrial septal defect and ventricular septal defect repair |
| Atrial septal defect primum repair |
| Ventricular septal defect repair |
| Ventricular septal defect closure and pulmonary valvotomy or infundibular resection |
| Ventricular septal defect closure and pulmonary artery band removal |
| Repair of unspecified septal defect |
| Total repair of tetralogy of Fallot |
| Repair of total anomalous pulmonary veins at age >30 d |
| Glenn shunt |
| Vascular ring surgery |
| Repair of aorta-pulmonary window |
Coarctation repair at age  30 d |
| Repair of pulmonary artery stenosis |
| Transection of pulmonary artery |
| Common atrium closure |
| Left ventricular to right atrial shunt repair |
| Risk category 3 |
| Aortic valve replacement |
| Ross procedure |
| Left ventricular outflow tract patch |
| Ventriculomyotomy |
| Aortoplasty |
| Mitral valvotomy or valvuloplasty |
| Mitral valve replacement |
| Valvectomy of tricuspid valve |
| Tricuspid valvotomy or valvuloplasty |
| Tricuspid valve replacement |
| Tricuspid valve repositioning for Ebstein anomaly at age >30 d |
| Repair of anomalous coronary artery without intrapulmonary tunnel |
| Repair of anomalous coronary artery with intrapulmonary tunnel (Takeuchi) |
| Closure of semilunar valve, aortic or pulmonary |
| Right ventricular to pulmonary artery conduit |
| Left ventricular to pulmonary artery conduit |
| Repair of double-outlet right ventricle with or without repair of right ventricular obstruction |
| Fontan procedure |
| Repair of transitional or complete atrioventricular canal with or without valve replacement |
| Pulmonary artery banding |
| Repair of tetralogy of Fallot with pulmonary atresia |
| Repair of cor triatriatum |
| Systemic to pulmonary artery shunt |
| Atrial switch operation |
| Arterial switch operation |
| Reimplantation of anomalous pulmonary artery |
| Annuloplasty |
| Repair of coarctation and ventricular septal defect closure |
| Excision of intracardiac tumor |
| Risk category 4 |
| Aortic valvotomy or valvuloplasty at age 30 d |
| Konno procedure |
| Repair of complex anomaly (single ventricle) by ventricular septal defect enlargement |
| Repair of total anomalous pulmonary veins at age 30 d |
| Atrial septectomy |
| Repair of transposition, ventricular septal defect, and subpulmonary stenosis (Rastelli) |
| Atrial switch operation with ventricular septal defect closure |
| Atrial switch operation with repair of subpulmonary stenosis |
| Arterial switch operation with pulmonary artery band removal |
| Arterial switch operation with ventricular septal defect closure |
| Arterial switch operation with repair of subpulmonary stenosis |
| Repair of truncus arteriosus |
| Repair of hypoplastic or interrupted arch without ventricular septal defect closure |
| Repair of hypoplastic or interrupted aortic arch with ventricular septal defect closure |
| Transverse arch graft |
| Unifocalization for tetralogy of Fallot and pulmonary atresia |
| Double switch |
| Risk category 5 |
| Tricuspid valve repositioning for neonatal Ebstein anomaly at age 30 d |
| Repair of truncus arteriosus and interrupted arch |
| Risk category 6 |
| Stage 1 repair of hypoplastic left heart syndrome (Norwood operation) |
| Stage 1 repair of nonhypoplastic left heart syndrome conditions |
| Damus-Kaye-Stansel procedure |
