{"abstract":false,"baseDefinition":"http://hl7.org/fhir/StructureDefinition/string","contact":[{"telecom":[{"system":"url","value":"http://hl7.org/fhir"}]},{"telecom":[{"system":"url","value":"http://www.hl7.org/Special/committees/fiwg"}]}],"date":"2026-07-16T05:07:06+00:00","derivation":"specialization","description":"id type: Any combination of letters, numerals, \"-\" and \".\", with a length limit of 64 characters.  (This might be an integer, an unprefixed OID, UUID or any other identifier pattern that meets these constraints.)  No whitespace characters are allowed. Ids are case-insensitive.","differential":{"element":[{"comment":"RFC 4122","definition":"Any combination of letters, numerals, \"-\" and \".\", with a length limit of 64 characters.  (This might be an integer, an unprefixed OID, UUID or any other identifier pattern that meets these constraints.)  No whitespace characters are allowed. Ids are case-insensitive.","id":"id","max":"*","min":0,"path":"id","short":"Primitive Type id"},{"definition":"Primitive value for id","id":"id.value","max":"1","min":0,"path":"id.value","representation":["xmlAttr"],"short":"Primitive value for id","type":[{"code":"http://hl7.org/fhirpath/System.String","extension":[{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type","valueUrl":"id"},{"url":"http://hl7.org/fhir/StructureDefinition/regex","valueString":"[A-Za-z0-9\\-\\.]{1,64}"}]}]}]},"experimental":false,"extension":[{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status","valueCode":"normative"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version","valueCode":"4.0.0"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics","valueCode":"has-length"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-wg","valueCode":"fhir"}],"fhirVersion":"6.0.0-ballot4","id":"id","jurisdiction":[{"coding":[{"code":"001","display":"World","system":"http://unstats.un.org/unsd/methods/m49/m49.htm"}]}],"kind":"primitive-type","name":"id","publisher":"HL7 International / FHIR Infrastructure","resourceType":"StructureDefinition","snapshot":{"element":[{"base":{"max":"*","min":0,"path":"id"},"comment":"RFC 4122","constraint":[{"expression":"hasValue() or (children().count() > id.count())","human":"All FHIR elements must have a @value or children or both","key":"ele-1","severity":"error","source":"http://hl7.org/fhir/StructureDefinition/Element"}],"definition":"Any combination of letters, numerals, \"-\" and \".\", with a length limit of 64 characters.  (This might be an integer, an unprefixed OID, UUID or any other identifier pattern that meets these constraints.)  No whitespace characters are allowed. Ids are case-insensitive.","id":"id","isModifier":false,"isSummary":false,"max":"*","min":0,"path":"id","short":"Primitive Type id"},{"base":{"max":"1","min":0,"path":"Element.id"},"definition":"unique id for the element within a resource (for internal references)","id":"id.id","isModifier":false,"isSummary":false,"max":"1","min":0,"path":"id.id","representation":["xmlAttr"],"short":"xml:id (or equivalent in JSON)","type":[{"code":"http://hl7.org/fhirpath/System.String","extension":[{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type","valueUrl":"string"}]}]},{"alias":["extensions","user content"],"base":{"max":"*","min":0,"path":"Element.extension"},"comment":"There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.","constraint":[{"expression":"hasValue() or (children().count() > id.count())","human":"All FHIR elements must have a @value or children","key":"ele-1","severity":"error","source":"http://hl7.org/fhir/StructureDefinition/Element"},{"expression":"extension.exists() != value.exists()","human":"Must have either extensions or value[x], not both","key":"ext-1","severity":"error","source":"http://hl7.org/fhir/StructureDefinition/Extension"}],"definition":"May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.","id":"id.extension","isModifier":false,"isSummary":false,"max":"*","min":0,"path":"id.extension","short":"Additional content defined by implementations","type":[{"code":"Extension"}]},{"base":{"max":"1","min":0,"path":"string.value"},"definition":"Primitive value for id","id":"id.value","isModifier":false,"isSummary":false,"max":"1","min":0,"path":"id.value","representation":["xmlAttr"],"short":"Primitive value for id","type":[{"code":"http://hl7.org/fhirpath/System.String","extension":[{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type","valueUrl":"id"},{"url":"http://hl7.org/fhir/StructureDefinition/regex","valueString":"[A-Za-z0-9\\-\\.]{1,64}"}]}]}]},"status":"active","text":{"div":"<div xmlns=\"http://www.w3.org/1999/xhtml\">to do</div>","status":"generated"},"type":"id","url":"http://hl7.org/fhir/StructureDefinition/id","version":"6.0.0-ballot4"}