There are processes for making decisions about adding or changing content in SNOMED CT.
All change requests, whether for new content or for change to existing content, go through a request submission approval process. It involves review by authors to determine that there is:
Legacy concepts, i.e. concepts not in the current draft/work-in-progress version of SNOMED CT, may not follow current guidelines. Requests based on legacy concepts are unacceptable.
Requests that are rejected may be appealed by the submitter.
Requests may be deferred for a number of reasons including questions about:
Resolution of deferrals may result in a decision delay requiring:
Results of adjudication are received by email from the Content Request System (CRS). Simpler issues can be resolved expeditiously (e.g. by a ruling from the Chief Terminologist).