Page History

...

1. Remove any concepts that are not required for your use case
2. Add any concepts missing from the subset that may be required for your specific use case;
   
   • Please note, if the concept you require is not included in the SNOMED CT Edition you are using, please follow the content request processes in each country. For more information, refer to the relevant SNOMED International Member page.  
   • SNOMED International National Release Centers and other authorized users may request additions or changes to the SNOMED CT International Edition via the SNOMED CT Content Request Service. For more information, refer to the CRS User Guide or contact info@snomed.org.
3. Remove any concepts that are not included in the SNOMED CT versioned edition being used. This may involve
   
   • Checking the effective time of each international concept to ensure that it is less than or equal to the International Version used by your local SNOMED CT edition
   • Checking that any extension concepts are published in the SNOMED CT edition you are using
4. Ensure that your subset aligns with best practice principles for subset creation. 
   • For example, this may involve checking that all members of the subset belong to a single hierarchy (in most cases), and that no two members subsume each other (in most cases).
   • For more information, please watch our e-learning presentation on this topic - Subset Creation Principles.

...