## Profiles: Foundation Module

These resources are part of the [FHIR Foundation Module](https://www.hl7.org/fhir/foundation-module.html).

The foundation resources used in this specificaiton are:

Foundation Framework
* **/Binary** - Used for transferring files associated with a /ReferralRequest.
* **/Bundle** - Used to send multiple resources.

Content Management Resources
* **/Composition** - 
* **/DocumentReference** - Used to references files associated with a /ReferralRequest

Data Exchange Resources
* **/OperationOutcome** - The response structure returned after sending requests to the FHIR server

The documetation provided by [HL7] (https://www.hl7.org/fhir/foundation-module.html) for these resources is relied upon as the primary references source for this specification.