Table 2.

United Network for Organ Sharing Heart Allocation System as of October 20188

Status 1Venoarterial extracorporeal membrane oxygenation
Nondischargeable, surgically implanted, nonendovascular biventricular support device
Mechanical circulatory support with life-threatening ventricular arrhythmias
Status 2Nondischargeable, surgically implanted, nonendovascular left ventricular assist device
Intraaortic balloon pump
Ventricular tachycardia or ventricular fibrillation
Mechanical circulatory support with device malfunction/mechanical failure
Total artificial heart, biventricular assist device, right ventricular assist device, or
ventricular assist device for single ventricular patients
Percutaneous endovascular mechanical circulatory support device
Status 3Dischargeable left ventricular assist device for up to 30 days
Multiple inotropes or single high-dose inotropes with continuous hemodynamic monitoring
Venoarterial extracorporeal membrane oxygenation after 7 days; percutaneous endovascular circulatory device or intraaortic balloon pump after 14 days
Nondischargeable, surgically implanted, nonendovascular left ventricular assist device after 14 days
Mechanical circulatory support with device infection
Mechanical circulatory support with hemolysis
Mechanical circulatory support with pump thrombosis
Mechanical circulatory support with right heart failure
Mechanical circulatory support with mucosal bleeding
Mechanical circulatory support with aortic insufficiency
Status 4Stable left ventricular assist device candidates not using 30-day discretionary period
Inotropes with hemodynamic monitoring
Diagnosis of congenital heart disease
Diagnosis of ischemic heart disease with intractable angina
Diagnosis of hypertrophic cardiomyopathy
Diagnosis of restrictive cardiomyopathy
Diagnosis of amyloidosis
Status 5aCombined organ transplants
Status 6All remaining active candidates
Status 7Inactive/not transplantable
  • aStatus 5 candidates may ascend to higher acuity status if indicated based on cardiac status.