description: The US Core ServiceRequest Profile inherits from the FHIR [ServiceRequest](https://hl7.org/fhir/R4/servicerequest.html) resource; refer to it for scope and usage definitions. This profile sets minimum expectations for recording, searching, and fetching the ServiceRequest information. It specifies which core elements, extensions, vocabularies, and value sets **SHALL** be present and constrains how the elements are used. Providing the floor for standards development for specific use cases promotes interoperability and adoption. package_name: hl7.fhir.us.core.r4b derivation: constraint name: USCoreServiceRequestProfile type: ServiceRequest elements: category: mustSupport: true index: 2 slicing: rules: open discriminator: - {path: $this, type: value} min: null slices: us-core: match: {} schema: binding: {strength: required, valueSet: 'http://hl7.org/fhir/us/core/ValueSet/us-core-servicerequest-category'} mustSupport: true index: 3 encounter: type: Reference mustSupport: true refers: ['http://hl7.org/fhir/us/core/StructureDefinition/us-core-encounter'] index: 7 reasonCode: short: '𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: Explanation/Justification for procedure or service' binding: {strength: extensible, valueSet: 'http://hl7.org/fhir/us/core/ValueSet/us-core-condition-code'} index: 15 authoredOn: {mustSupport: true, index: 13} occurrenceTiming: {type: Timing, mustSupport: true, choiceOf: occurrence, index: 12} requester: type: Reference mustSupport: true refers: ['http://hl7.org/fhir/StructureDefinition/Device', 'http://hl7.org/fhir/StructureDefinition/PractitionerRole', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-organization', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-practitioner', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-relatedperson'] index: 14 occurrencePeriod: {type: Period, mustSupport: true, choiceOf: occurrence, index: 10} status: {mustSupport: true, index: 0} code: binding: {strength: extensible, valueSet: 'http://hl7.org/fhir/us/core/ValueSet/us-core-procedure-code'} mustSupport: true index: 4 elements: text: {short: '𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: The name of the test, procedure, or service to be performed.', index: 5} intent: {mustSupport: true, index: 1} occurrenceDateTime: {type: dateTime, mustSupport: true, choiceOf: occurrence, index: 11} subject: type: Reference mustSupport: true refers: ['http://hl7.org/fhir/StructureDefinition/Device', 'http://hl7.org/fhir/StructureDefinition/Group', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-location', 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient'] index: 6 occurrence: mustSupport: true choices: [occurrencePeriod, occurrenceDateTime, occurrenceTiming] index: 9 reasonReference: {short: '𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: US Core Profile that supports the requested service', index: 16} package_version: 8.0.0 class: profile kind: resource url: http://hl7.org/fhir/us/core/StructureDefinition/us-core-servicerequest base: http://hl7.org/fhir/StructureDefinition/ServiceRequest version: 8.0.0 required: [code]