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Welcome to the SNOMED CT® Content Request Service (CRS) . This system allows users to request basic content changes to SNOMED CT.


How do I get to CRS?

Please go to https://request.ihtsdotools.org, where you will be asked to log in.

How do I obtain a CRS Account?

Please see, Accessing CRS.

What types of Content Requests are supported?

Before making any request, please read the guidance on submitting content -

The new CRS tool features a variety of templates and two request entry modes to appeal to most users. These Include:

  • Create a new Concept(s)

    A request for a new concept must take into account existing content and align with the existing Editorial Guidance

  • Add New Synonym(s)

    A new synonym may be added to an existing concept if the request aligns with existing Editorial Guidance and has a clear justification.

  • Add or Modify Parent(s)

    A new parent may be added to an existing concept (or changed) if the request aligns with existing Editorial Guidance and has a clear justification.

  • Add or Modify Description(s)

    A new description may be added to an existing concept (or changed) if the request aligns with existing Editorial Guidance and has a clear justification.

  • Inactivate Concept(s), Description(s), or Relationship(s)

    Concepts or their components may be inactivated if the request aligns with existing Editorial Guidance and has a clear justification.

  • Modify and Create New Relationship(s)

    New relationships or modification to existing concepts may be made if the request aligns with existing Editorial Guidance and has a clear justification.