description: Describes the extent to which the FHIR query patterns given for a data requirement (i.e. the cqf-fhirQueryPattern extensions present on the data requirement) cover the criteria of that data requirement. Because the query patterns for a data requirement are considered as a set (i.e. the union of the results of the query patterns represents the data for the data requirement), coverage is a characteristic of the data requirement as a whole, rather than of any individual query pattern. A coverage of `total` indicates that no further filtering of the results is required; any other value indicates that the consumer must apply the criteria of the data requirement to the results of the query patterns.
package_name: hl7.fhir.uv.cql
derivation: constraint
name: CQLFHIRQueryPatternCoverage
type: Extension
elements:
  extension: {index: 0}
  url:
    type: uri
    pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/cql/StructureDefinition/cql-fhirQueryPatternCoverage'}
    index: 1
  value:
    choices: [valueCode]
    index: 3
  valueCode: {type: code, choiceOf: value, index: 4}
package_version: 3.0.0-ballot
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/uv/cql/StructureDefinition/cql-fhirQueryPatternCoverage
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 3.0.0-ballot
required: [valueCode, value]