This profile identifies the additional constraints, extensions, and value sets that build on and extend [Device](http://hl7.org/fhir/R4/device.html) that are supported. 

The [Device](http://hl7.org/fhir/R4/device.html) resource, profiled as a system device, is used within the context of a referencing resource. 

This profile is designed to set a Device standard for:
* Recording or updating a system device referenced by another resource
* Reading system devices referenced by another resource


#### Profile specific guidance
None.