{"abstract":false,"baseDefinition":"http://hl7.org/fhir/StructureDefinition/DataType","contact":[{"telecom":[{"system":"url","value":"http://hl7.org/fhir"}]}],"date":"2021-04-15T12:25:09+10:00","derivation":"specialization","description":"Base StructureDefinition for Extension Type: Optional Extension Element - found in all resources.","differential":{"element":[{"constraint":[{"expression":"extension.exists() != value.exists()","human":"Must have either extensions or value[x], not both","key":"ext-1","severity":"error","source":"http://hl7.org/fhir/StructureDefinition/Extension","xpath":"exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])"}],"definition":"Optional Extension Element - found in all resources.","extension":[{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status","valueCode":"normative"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version","valueCode":"4.0.0"}],"id":"Extension","mapping":[{"identity":"rim","map":"N/A"}],"max":"*","min":0,"path":"Extension","short":"Optional Extensions Element"},{"comment":"The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. 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\r\n\r\n\r\n
NameFlagsCard.TypeDescription & Constraints\"doco\"
\".\"\".\" ExtensionNElementOptional Extensions Element
+ Rule: Must have either extensions or value[x], not both
Elements defined in Ancestors: id, extension
\".\"\".\"\".\" url1..1uriidentifies the meaning of the extension
\".\"\".\"\".\" value[x]0..1*Value of extension

\"doco\" Documentation for this format
","status":"generated"},"type":"Extension","url":"http://hl7.org/fhir/StructureDefinition/Extension","version":"4.6.0"}