Proposed MedDRA Version 22.0 Complex Changes

31 July 2018

The MSSO has posted the proposed complex changes for MedDRA Version 22.0 on the MedDRA website. Complex changes are changes to the MedDRA hierarchy, i.e., the High Level Terms (HLTs), High Level Group Terms (HLGTs), or System Organ Classes (SOCs).

We encourage your comments both for and against the proposed complex changes in order to understand the potential impact on your use of MedDRA.

The deadline for your comments to the proposed complex changes is 21 September 2018. Please send your comments to MSSORequest@meddra.org.