description: This extension stores the original {Resource}.id of a source that was modified by a processing system (e.g. NHSNLink) to make it usable for NHSN when the original did not meet FHIR-standard requirements. Resource IDs that are more than 64 characters long are not valid per the FHIR specification and must be modified. package_name: gov.cdc.nhsn.dqm derivation: constraint name: OriginalResourceId type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://www.cdc.gov/nhsn/fhirportal/dqm/ig/StructureDefinition/link-original-resource-id-extension'} index: 1 value: choices: [valueString] index: 3 valueString: {type: string, choiceOf: value, index: 4} package_version: 1.0.0 extensions: {} class: extension kind: complex-type url: http://www.cdc.gov/nhsn/fhirportal/dqm/ig/StructureDefinition/link-original-resource-id-extension base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0 required: [valueString, value]