## Union of http://hl7.org/fhir/us/davinci-crd/StructureDefinition/CDSHookServiceResponseExtensionIfNoneExist and http://hl7.org/fhir/us/davinci-crd/StructureDefinition/CDSHookServiceResponseExtensionIfNoneExist

This is the set of resources that conform to either of the profiles CDS Hooks Service Response If-None-Exist Extension (http://hl7.org/fhir/us/davinci-crd/StructureDefinition/CDSHookServiceResponseExtensionIfNoneExist) and CDS Hooks Service Response If-None-Exist Extension (http://hl7.org/fhir/us/davinci-crd/StructureDefinition/CDSHookServiceResponseExtensionIfNoneExist). E.g. what you have to deal with if you get resources conforming to one of them

### Structure

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
string |  | 0..1 |  | if-none-exist header value
extension |  | 0..* | Extension | Additional content defined by implementations
value |  | 0..1 | string | Primitive value for string Max Length:1048576
Documentation for this format