Continuous distribution

Current status

The OPTN currently seeks public feedback to inform the development of a lung allocation policy based on a continuous distribution framework. To provide your input, read the information and instructions on the OPTN public comment page.

Continuous distribution

Organs can be distributed to candidates using a statistical formula that combines important clinical factors, such as medical urgency and post-transplant survival, along with proximity to the donor location. Using this approach, all candidates would receive a composite allocation score, but there would be no absolute geographic boundary. Candidates who receive the highest score based on their combination of factors receive highest priority.

Additional information is available on the OPTN continuous distribution initiative page.



Insights from UNOS leaders on key issues in transplant today

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Additional resources

  • View a presentation addressing legal and regulatory history and perspectives for organ distribution in the United States.
  • Read a June 6, 2018 memo to members from OPTN Board President Yolanda Becker, M.D.
  • Read a June 20, 2018 memo to members from OPTN Board President Yolanda Becker, M.D.
  • Read a July 31, 2018 memo from HRSA Administrator George Sigounas, M.S., Ph.D., to UNOS regarding further development of organ distribution policies.
  • Read an Aug. 13, 2018 reply from UNOS to HRSA’s memo of July 31.
  • Read an article in the Journal of Health & Biomedical Law analyzing legal issues related to the emergent lung allocation policy enacted in November 2017
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