description: Describes the clinical focus for the ValueSet. package_name: fhir.cdc.opioid-cds-r4 derivation: constraint name: CDC_Opioid_Guidance_ValueSet_Inclusion_Criteria_Extension type: Extension elements: url: pattern: {type: Uri, value: 'http://fhir.org/guides/cdc/opioid-cds/StructureDefinition/cdc-valueset-inclusion-criteria'} index: 0 valueString: {type: string, index: 1} package_version: 2022.1.0 class: extension kind: complex-type url: http://fhir.org/guides/cdc/opioid-cds/StructureDefinition/cdc-valueset-inclusion-criteria base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0 required: [valueString]