Organ Procurement and Transplantation Network

Allocation Calculators

The Model for End-Stage Liver Disease (MELD) and Pediatric End-Stage Liver Disease (PELD) calculators are numerical scales used for liver allocation.

• MELD calculator (ages 12 and older)
• PELD calculator (under age 12)

Policy & Guidance

• OPTN Policy 9: Allocation of livers and liver-intestines (PDF - 2.5 MB)
• Questions and answers about HCC automatic approval criteria changes (PDF; 12/2017)
• Liver review board guidance (PDF - 617 K; 6/2016)
• Increasing utilization of deceased donor livers (PDF - 2.5 M; 6/2012)
• Guidance: MELD/PELD exception review (6/2015) 

Professional Education

• Simultaneous liver-kidney allocation