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CodeX (Common Oncology Data Elements eXtensions) is a Member-driven HL7 FHIR Accelerator, building a community to accelerate interoperable data modeling and applications that lead 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 is developing supplemental IGs, relative to mCODE, that are needed for Use-Case-based projects to achieve success.  Further, CodeX demonstrates the potential of mCODE-based data collection and sharing through live Use-Case pilots in the field.

All work aligns with the vision of collecting cancer patient data once, and re-using it to enable a range of Use Cases:

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 Case  projects are Executing, or in the Planning or Discovery phases, with Members driving progress. Projects - ranging from collection of patient data for Real-World-Data clinical trials , matching patients with trials , and registry reporting - demonstrate the potential to  improve cancer care and research via mCODE, supplemental data elements and new workflows. 

Community of Practice

CodeX hosts a monthly mCODE Community of Practice  (CoP) meeting, typically on the last Friday of each month at 12pm ET. These meetings are free and open to all who are interested. The Community discusses recent achievements around leveraging the mCODE standard and associated work to improve cancer care and research in the real world.

Please register to join our upcoming meeting by (1) selecting "Register Here" (2) including your information for registration and (3) choosing the “Add to calendar” drop-down link to add the meeting information and Zoom invitation. 

Valuable content from previous CoP meetings can be found on the Meeting Minutes page. Please joins us!



CodeX Members  drive improved data interoperability for better cancer care and research. Cancer patient organizations, specialty societies, health systems, researchers, system vendors and many others are already powering our work.

Members have the privilege of serving on Use Case Project leadership teams, making the decisions that enable Smarter Data in the Fight Against Cancer. 

Contact Steve Bratt or Kim Ball to discuss Membership options that will enable you and your organization to drive real impact.

mCODE/CodeX in the News 

Learn more about the CodeX Information Flow and Decision Making

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Position: CodeX Program Manager
Location: Orleans, MA

Position: Clinical Director, CodeX
Location: Bedford, MA

Position: CodeX Deputy Program Manager
Location: Denver, CO

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