SNOMED CT Content Request Service

SNOMED International coordinates requests for additions or changes to SNOMED CT through its Members' National Release Centers (NRCs). For more information about the processes in each country/territory, please access the relevant Member page.

Members' NRCs and other authorized users submit requests for additions or changes via the SNOMED CT Content Request Service (CRS). Requests that meet inclusion criteria for the International Release are addressed by SNOMED International staff. If a request is declined, a reason and explanation is provided to the requester, who may choose to appeal the decision to the Head of Terminology.

Guidance information for requesting changes to SNOMED CT

Customer Guidance - Requesting Changes to SNOMED CT

Presentation on Making a Request Submission:
  • This E-Learning presentation covers the processes, criteria and considerations for creating good quality request submissions

Request submission dates

SNOMED International is now accepting request submissions to be considered for inclusion by the July 2023 SNOMED CT International Release.
Request submissions received between 4 October 2022 and 5 April 2023 inclusive will be reviewed for inclusion in or before the July 2023 International release. Please note there are changes to the Service Level Agreement. 

For more information please click here

Namespace identifiers

If you are interested in creating your own content or extension, you will need a Namespace Identifier so your content can be associated with you.

Namespace application form

To get a Namespace Identifier, please fill out a
Namespace Identifier Application Form and email it to

Namespace identification policy

Namespace identifier registry


Premier events including annual Business Meetings, SNOMED CT Expo, and SNOMED CT Web Series

View our events

Learn more

Explore the wide range of resources available to our community of practice

More information