CodeX (Common Oncology Data Elements eXtensions) is a HL7 FHIR Accelerator, building a community to accelerate interoperable data modeling and applications leading to step-change improvements in cancer patient care and research.

CodeX members are achieving interoperability by integrating the mCODE (minimal Common Oncology Data Elements) FHIR Implementation Guide -- a standard language for cancer data -- into existing and new applications. As a part of this effort, CodeX will also develop extensions to mCODE as needed for Use-Cases-based projects to be successful.

For background, see the more detailed overview. To stay up to date on all CodeX news, subscribe to the general mailing Listserv to your right.

Use Cases

CodeX Use Cases projects are Executing, or in the Planning or Discovery phases, with Members driving progress. All projects hold promise to substantially improve cancer care and research through community alignment around the use of mCODE and necessary extensions for the sharing of standardized, structured cancer data. 

Community of Practice

CodeX hosts the mCODE Community of Practice - an open venue for sharing best practices for basic mCODE implementation within EHRs for data collection and sharing across a growing number of use cases. Visit the CoP home page to register for the next teleconference, add your name to the mailing list to be invited to future events and explore previous content.


A warm welcome to CodeX’s Founding Members! The opportunity to be a Founder is available through the end of 2020. CodeX is currently talking with tens of organizations who are interested in becoming members to enable Smarter Data in the Fight Against Cancer. Contact Steve Bratt or Anthony DiDonato to discuss membership options.


As CodeX Use Cases develop FHIR Implementation Guides, Reference Implementations, Best Practices and other products will be linked from the appropriate Use Case pages.

mCODE/CodeX in the News 

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