description: Records the original create date of the associated resource from the original source system, prior to transformation and migration to the new FHIR repository. package_name: ca.on.ehr.r4 derivation: constraint name: OriginalCreateDate type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://ontariohealth.ca/fhir/ehr/StructureDefinition/ext-original-create-date'} index: 1 value: choices: [valueDateTime] index: 3 valueDateTime: {type: dateTime, choiceOf: value, index: 4} package_version: 1.0.0-snapshot12 extensions: {} class: extension kind: complex-type url: http://ontariohealth.ca/fhir/ehr/StructureDefinition/ext-original-create-date base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [valueDateTime, value]