This page is part of a downloaded copy of this specification. This page is part of the Da Vinci Coverage Requirements Discovery (CRD) FHIR IG (v0.1.0: STU 1 Ballot 1) based on FHIR v3.5.0. . For a full list of available versions, see the Directory of published versions

This is a pre-release version (Ballot 1) of Coverage Requirements Discovery (CRD) R1/STU. There is no current official version.
For a full list of available versions, see the Directory of published versions .

## FHIR Resources

### Quick Links

FHIR R4 Artifacts
FHIR R4 US Core (not yet created)
FHIR STU3 Artifacts
FHIR STU3 US Core (1.0.1)

Additional information about the use of these artifacts, CRD for multiple FHIR versions and the use of US Core can be found in the main specification.

These FHIR artifacts define the clinical data that can be queried (or retrieved using prefetch) from client systems by CRD hook services and that can be returned to client systems by hook services within cards.

The artifacts are of four types:

- Profiles constrain FHIR resources to reflect CRD requirements
- Code Systems define CRD-specific terminologies to be used in one or more of those profiles
- Value Sets define the specific subsets of both CRD-defined and other code systems that can be (or are recommended to be) used within one or more profile elements
- Search Parameters defines additional search criteria needed to allow filtering of FHIR resources to those relevant for CRD use-cases

For the purpose of this implementation guide, [Must Support]({“path”=>”http://hl7.org/fhir/2018Sep/”, “canonical”=>”http://hl7.org/fhir/us/davinci-crd”, “igId”=>”davinci-crd”, “igName”=>”CoverageRequirementsDiscovery”, “igVer”=>”0.1.0”, “errorCount”=>0, “version”=>”3.5.0”, “revision”=>”14915”, “versionFull”=>”3.5.0-14915”, “toolingVersion”=>”3.5.0”, “toolingRevision”=>”14906”, “toolingVersionFull”=>”3.5.0-14906”, “totalFiles”=>33, “processedFiles”=>103, “genDate”=>”Tue, Aug 21, 2018 16:01+1000”, “ig”=>{“id”=>”davinci-crd”, “name”=>”CoverageRequirementsDiscovery”, “url”=>”http://hl7.org/fhir/us/davinci-crd/ImplementationGuide/davinci-crd”, “version”=>”0.1.0”, “status”=>”draft”, “experimental”=>false, “publisher”=>”HL7 Davinci Project”, “description”=>”Guidelines for conveying coverage requirements to clinicians when planning treatment”, “fhirVersion”=>”3.5.0”}}profiling.html#mustsupport) means that client systems must be capable of exposing the data to at least some payer systems. Payer systems are not obligated to make use of Must Support elements in performing their coverage requirements determination processes.