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Operational Data Model


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The Operational Data Model (ODM) is designed to facilitate the archive and interchange of the metadata and data for clinical research, its power being fully unleashed when data are collected from multiple sources.


CDISC has an active ODM certification program. For full details and to see those companies that have achieved certification click here.

There are several versions of the model including the latest release of ODM 1.3.2.


All previous versions of ODM can be found by using this link

Standards in Production


Updated Version of ODM Now Available!


This is version 1.3.2 of the ODM, which replaces 1.3.1. This version adds a new optional OrderNumber attribute for the EnumeratedItem and CodeListItem elements. Both Define-XML V2.0 and the Study DataSet-XML draft standard reference the ODM 1.3.2 schema. In the specification document (ODM1-3-2-final.html) section "2.5 Changes from Previous Versions" provides a summary of the new features added in this release. Detailed descriptions of the new features have been incorporated into the text of the specification document. ODM Version 1.3.2 has been designed to provide backward compatibility with previous versions of the model in most cases, and is completely backward compatible with ODM 1.3.1. In cases where backward compatibility has been impacted, it is due to clarifying the specification to more completely match the original intent of the standard.


ODM 1.3.2 has the same namespace as 1.3.1 and 1.3.0. Use ODMVersion to indicate the version used. ODMVersion is enumerated and the list of options is shown in the specification.


ODM is a vendor neutral, platform independent format for interchange and archive of clinical study data. The model includes the clinical data along with its associated metadata, administrative data, reference data and audit information. All of the information that needs to be shared among different software systems during the study setup, operation, analysis, submission or for long term retention as part of an archive is included in the model.

ODM Version 1.3.2  |  Non Members
ODM Version 1.3.1  |  Non Members

New CDISC Member Application

To register for a new membership, please supply the following information.

Please read the details on the membership page BEFORE you apply.

Please also check that your company is not already a member of CDISC here: CDISC Members.

For membership benefits and rates click here