FHIR Release 4 v4.0.1 – are also now normative, including the RESTful API, the XML and JSON formats, the terminology layer, the conformance framework as well as Patient and Observation resources

The JSON representation for a resource is based on the JSON format described in STD 90 (RFC 8259) and is described using this format

{
„resourceType“ : „[Resource Type]“,
// from Source: property0
„property1“ : „<[primitive]>“, // short description
„property2“ : { [Data Type] }, // short description
„property3“ : { // Short Description
„propertyA“ : { CodeableConcept }, // Short Description (Example)
},
„property4“ : [{ // Short Description
„propertyB“ : { Reference(ResourceType) } // R! Short Description
}]
}