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On this page: Links to policies, bylaws, toolkits and other resources


For all

For OPOs

For transplant hospitals


Changes: Pending and implemented

FAQ: New multi-organ polices in effect

The Organ Procurement and Transplantation Network Ad-hoc Multi Organ Transplantation Committee has implemented several safety net policies to ensure patients in need of multiple organ transplants to get priority when they become medically eligible.

Data collection

OPTN data collection forms have been updated

View news item

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For all members

OPTN policies and bylaws

OPTN evaluation plan

How UNOS, as the OPTN contractor assesses member compliance with OPTN policies and bylaws.

Evaluation plan

Last updated 9/28/2023

UNOS Connect

Online learning: Effective practices, system updates, and policy changes.

UNOS Connect

Quick links


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Understand. Compare. Improve.

Access research and data analytics to improve performance and increase transplant:

Resources for recent changes

July 13, 2023: Improvements to MELD and PELD now in effect

View the implementation notice

eGFR: Waiting time modifications for candidates affected by race-inclusive eGFR calculations

Visit toolkit

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Lung allocation: View resources for lung allocation policy based on continuous distribution implemented on March 9, 2023.

Visit toolkit

Jan. 5, 2023: Waiting time modifications policy takes effect. After notifying all of their candidates, all kidney programs must correct waiting times for affected candidates by submitting waiting time modification forms by Jan. 3, 2024. Find details about professional education in the implementation notice.

OPTN membership

Need to apply or amend your organization’s OPTN membership?

Resources with more information about OPTN member requirements and obligations:

Disease transmission

Potential Donor-Derived Disease Transmission Events

In discussion: Making allocation more fair and flexible.

Multi-organ transplants

SLK: Simultaneous liver-kidney allocation

Clarification to multi-organ allocation policy

For your patients: guidance and resources

For professionals: guidance for donor and recipient information sharing

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Organ procurement organizations

Special cases, guidance

Expedited placement


Infectious disease testing

In discussion: Increasing recovery of DCD organs

UNOS recently led a national collaborative improvement project to help identify and share effective practices related to recovery of donation after circulatory death (DCD) organs. Learn how the first cohort surpassed their aim, contributing to 2021’s record-setting year for recovery of DCD organs. 

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Transplant programs


Within 7 days

Transplant hospitals must report to the OPTN the disposition of all extra vessels, including their use, sharing, or destruction, within seven days of their use, sharing, or destruction.

(OPTN policy 16.6.C, Reporting requirements for extra vessels)


Storing vessels/positive vessel storage

Kidney paired donation


Understand the OPTN performance review process

Access UNOS Connect videos in the course catalog under the Quality/Effective practices category. You’ll find:

  • Bayesian methods
  • Demystifying the MPSC performance review process
  • Performance management series town hall
  • Benefits of participating – testimonial


Policy development

UNOS and the OPTN work with committees of volunteers to create policies to ensure that our national system is equitable.


These three organizations work closely together, but each has their own distinct role in supporting, monitoring and improving the national transplant system.

  • The Organ Procurement and Transplantation Network, or OPTN, is a public-private partnership that links all professionals involved in the U.S. donation and transplantation system. It is a member organization that acts through its Board of Directors and volunteer committees. The OPTN board establishes and maintains transplant policies and bylaws. Learn more about the OPTN.
  • UNOS is the non-profit that serves as the OPTN under contract with the federal government, and convenes the community to develop policies together. UNOS manages the national transplant waiting list and maintains the database that contains all organ transplant data for every transplant event in the U.S. Learn more about UNOS and its role as the OPTN.
  • The Scientific Registry of Transplant Recipients, or SRTR, operates under contract with the federal government. The SRTR works with UNOS as the OPTN contractor and provides analytic support in policy development and performance monitoring. The SRTR evaluates the performance of the system through regular publication of reports. Learn more about SRTR.
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