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Links to policies, bylaws, toolkits and other resources

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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 10/27/2022

UNOS Connect

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

UNOS Connect

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Understand. Compare. Improve.

For UNOS Members: Research and data analytics that let you improve performance and increase transplant.
Tools for transplant hospitals Tools for OPOs

Recent changes

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.

Lung allocation: View resources available to prepare for the upcoming lung allocation policy based on continuous distribution.

Visit toolkit

Nov. 30, 2022: The formula for calculating CPRA score is updating. Read the pre-implementation notice and the patient FAQ to learn more.

July 14, 2022: Two new metrics in effect for enhanced transplant program performance monitoring. Get educational resources and information about the phased timeline for all four risk-adjusted metrics.

Visit toolkit

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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