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The guide is organized into five main chapters, beginning with an introduction that outlines the objectives, scope, and target audience. The second chapter focuses on the key use cases that motivated the creation of this guide, providing clinical scenarios where SNOMED CT implementation is beneficial within the domain of allergy, hypersensitivity, and intolerance.
Chapter three elaborates on how SNOMED CT addresses the terminological needs within this domain, including relevant editorial policies and concept model rules established to ensure the quality of the content.
Chapter four introduces HL7 FHIR as a recommended data exchange format/structure to facilitate the harmonization and interoperability of data within this domain. It also clarifies the bindings between HL7 FHIR AllergyIntolerance resouce elements and value sets and SNOMED CT.
Finally, chapter five presents technical considerations related to the joint implementation of SNOMED CT and FHIR for allergy-related data capture, including two main ways to document adverse sensitivity in the EHR, which are supported by SNOMED CT: substance-focused and findings-focused models.

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