WIP SNOMED CT Implementation Guide for Allergy, Hypersensitivity and Intolerance

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  • Appendix I: Inclusive Information Model

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After considering reference information models from various standards development organizations and other national or regional sources, this inclusive information model was synthesized. The purpose of the model is to provide a conceptual framework to understand and align the various models but does not replace the individual models. (The details on each of the source information models are available in the appendixes)

Caption reference
CapRefIdinclusivemodel
CapRefTypeFigure
illustrates the inclusive information model and shows the relationship between the three classes included in the model. The Propensity class is the centerpiece. A propensity class may be associated with zero-to-many Adverse Reaction classes and zero-to-many Adverse Sensitivity Test Result classes.

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Data element

Description

Notes

Substance

Represents the specific allergen or other agent/substance to which the patient has an adverse reaction propensity. A substance is a physical material which can mean a drug or biologic, food, chemical agent, plants, animals, plastics etc.

 

Adverse sensitivity test performed

Represents the specific allergy test being performed ex: LOINC code 6206-7 Peanut IgE Ab [Units/volume] in Serum

 

Adverse sensitivity test result

Represents the test result

 

 

There were other published allergy and hypersensitivity information models being considered at the initial drafting of this document in 2014, which included epSOS, openEHR, US Federal Health Information Model and UK NHS Connecting for Health Information Model. Their analysis fed into the creation of the inclusive model. Since then, HL7®-related information models, especially FHIR®, have become increasingly popular. Therefore, this document focuses more on these models. The analyses of the other models can be found in the Appendix. Note that the information may not be up-to-date, and some of the projects which created the models may no longer be active (e.g. the epSOS project concluded in 2014).