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IMDRF Adverse Event Terminology Maintenance
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- The terms in the Annexes of the final version of the guideline document are maintained by the AE Working Group (AE WG) in accordance with the "Maintenance of IMDRF AE Terminologies" (IMDRF/AE WG/N44)FINAL:2020).
- The terminology is always open for Change Requests. The process is outlined in the figure below. The cutoff date for inclusion in the next release is 1 September. The Change Requests will then be reviewed by IMDRF, and the updated terminology and outcome of Change Requests will be published in March.

- Proposal of addition/modification/deletion of the terms must be submitted to AE WG by either National Competent Authorities or Stakeholder Organizations, using the online Change Request form. No proposal from an individual will be accepted.
- Please use the most recent change request form below.
Click here to submit a Change Request (Citizen Space)
- To make a change request, you must submit the form through Citizen Space. The form is available through Citizen Space or can be downloaded here.
- Once the form is completed it must be submitted using the Citizen Space submission process.