The California Data Use and Reciprocal Support Agreement (CalDURSA) is a multi-party data sharing agreement governing statewide health information sharing over the California Trusted Exchange Network (CTEN). It is an important aspect of the California’s strategy for statewide interoperability.

California Data Use and Reciprocal Support Agreement (CalDURSA)


The Model Modular Participants Agreement (MMPA) is a model agreement between HIOs and their exchange participants used by several California HIOs, including several CAHIE members. If you are interested in adopting or developing a participant agreement that is compatible with the CalDURSA, consider starting with the MMPA.

Model Modular Participants Agreement
Model Modular Participants Agreement Addendum