Request for Complex Change Proposals

16 May 2018

The MSSO invites you to submit complex change proposals for MedDRA Version 22.0, which will be released on 1 March 2019.  

Complex changes are changes or additions to the High Level Term (HLT), High Level Group Term (HLGT), and System Organ Class (SOC) levels of MedDRA.  All proposals must be submitted via WebCR no later than 13 July 2018

All proposed complex changes will be posted on the MedDRA website for user comments at the end of July through 21 September 2018.    

Please contact the MSSO at for questions about complex changes or the change request process.

Thank you for your continued support.