...

In addition, the objective is to enable consistent adoption of SNOMED CT within the domain of adverse sensitivity data by providing guidance on the representation of relevant information with different levels of granularity, with and without the use of post-coordination. 

Scope

This implementation guide is intended to accelerate the consistent implementation of SNOMED CT within the domain of adverse sensitivity and adverse reactions by:

• Extending previous SNOMED International work on definitions of adverse sensitivity
• Surveying and summarizing the relevant interoperability standards, 
• Advising the SNOMED International community regarding best practice deployment of allergy data within the EHR and identifying the SNOMED CT content that would constitute best practice for use in electronic health records.
• Addressing issues using SNOMED in day-to-day clinical practice
• Provide guidance in reconciling substances as allergens with clinical findings representing diseases and propensities as used in problem lists
• Leverage products and substances hierarchy for allergy decision support 

The scope of the work presented in this guide includes:

1. Review definitions and reference standard publicationsstandards
2. Analyze relevant information models
   1. Review existing information models that are in scope, with special emphasis on HL7® FHIR® that has gained considerable momentum in recent yearsCreate an inclusive model to harmonize the key data elements in the reviewed information models
3. Create exemplar use cases
   1. Describe the most common and important scenarios for capturing or exchanging adverse sensitivity information
   2. Illustrate how the information can be represented by using FHIR® and SNOMED CT concepts
4. Identify SNOMED CT reference setssubset
   1. Identify starter sets for large domains – most commonly used SNOMED CT concepts in clinical settings e.g., food allergens, adverse sensitivity reactions
   2. Identify value sets for specific data elements e.g., adverse sensitivity types, certainty, criticality, severity
5. Provide practical guidance on the use of SNOMED CT in
   1. Allergy list
   2. Problem list
   3. Clinical decision support

...

In addition, a number of appendixes present the results of the analysis performed and provide insights into the evolution of SNOMED CT and available information models.

• Appendix A: Glossary of Terms
• Appendix B: Historical SNOMED CT content perspective
• Appendix C: Analysis of the HL7 C-CDA model
• Appendix D: Analysis of the HL7 Patient Care Domain Analysis Model
• Appendix E: Analysis of the ISO International Patient Summary (IPS)
• Appendix F: Analysis of the epSOS information model
• Appendix G: Analysis of the openEHR information model
• Appendix H: Analysis of the US Federal Health Information Model
• Appendix I: Inclusive Information Model

Review

This SNOMED CT Implementation guide represents the culmination of work started by the Implementation SIG in 2014 and and continued by the SNOMED International Clinical Reference Group for Allergies/Hypersensitivity starting in 2020. 

...

We appreciate your interest in this guide and thank you for your contributions to the improvement of healthcare through the use of high-quality, standardized clinical terminologies like SNOMED CT. Please raise any comments to this document via the feedback button (At the bottom of the page).