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The CQF Ruler is an implementation of FHIR's Clinical Reasoning Module, built on top of the HAPI FHIR Server. The CQF Ruler functions as a clinical data repository, a clinical decision support service, a knowledge artifact repository, and a cql evaluation service.

More details about the CQF Ruler's internal design can be found on the architecture page.

The CQF Ruler provides support for the following (visit pages in sidebar for more information):

• FHIR Server (using HAPI JPA Server)
• Quality Measure Processing
  • Patient-level
  • Practitioner-level
  • Population-level
• FHIR DEQM Operations
  • $submit-data
  • $data-requirements
  • $collect-data
• CDS Hooks Request Processing
• PlanDefinition $apply operation
• ActivityDefinition $apply operation
• Narrative generation for selected resources
• Bulk Data Import/Export
• Resource loading (file->server and server->server)
• CQL Execution Service