description: The document reference profile used in US Core. package_name: rs/hl7.fhir.us.core derivation: constraint name: US Core DocumentReference Profile type: DocumentReference elements: identifier: {isModifier: false, mustSupport: true, index: 0} status: {isModifier: false, mustSupport: true, index: 1} type: {isModifier: false, mustSupport: true, index: 2} subject: type: Reference isModifier: false mustSupport: true refers: ['http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient'] index: 3 created: {isModifier: false, mustSupport: true, index: 4} content: isModifier: false mustSupport: true index: 5 elements: attachment: isModifier: false mustSupport: true index: 6 elements: contentType: {isModifier: false, mustSupport: true, index: 7} url: {isModifier: false, mustSupport: true, index: 8} required: [contentType, url] format: {isModifier: false, mustSupport: true, index: 9} required: [attachment, format] context: isModifier: false mustSupport: true index: 10 elements: encounter: type: Reference isModifier: false mustSupport: true refers: ['http://hl7.org/fhir/us/core/StructureDefinition/us-core-encounter'] index: 11 package_version: 1.1.0 class: profile kind: resource url: http://hl7.org/fhir/us/core/StructureDefinition/us-core-documentreference base: http://hl7.org/fhir/StructureDefinition/DocumentReference version: 1.1.0 required: [content, status, subject, type]