{
"description": "This profile on Identifier represents the Accession Number for the Imaging Order.\\n\\nWithin a Hospital Information System environment, accession numbers will **usually** uniquely identify a manifest or report but are not required to **always** map 1:1 with a report or manifest due to certain imaging workflows. The imaging report may not be uniquely identified by accession number in an overread scenario (two radiologists reading a single imaging study). The manifest may not be uniquely identified by accession number in the case that the RIS imaging request (accession number assigner) requires two imaging modalities to perform the exam, and thus produces two image manifests.\\n\\nIn order to ensure uniqueness **across** Hospital Information Systems, accession numbers are required to have a system value that identifies the namespace for the issuing authority (ensuring their global uniqueness).",
"_filename": "StructureDefinition-AccessionNumberIdentifierEuImaging.json",
"package_name": "hl7.fhir.eu.imaging",
"date": "2026-03-16T14:15:39+01:00",
"derivation": "constraint",
"publisher": "HL7 Europe",
"fhirVersion": "4.0.1",
"jurisdiction": [ {
"coding": [ {
"code": "150",
"system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
"display": "Europe"
} ]
} ],
"name": "AccessionNumberIdentifierEuImaging",
"mapping": [ {
"uri": "http://hl7.org/v2",
"name": "HL7 v2 Mapping",
"identity": "v2"
}, {
"uri": "http://hl7.org/v3",
"name": "RIM Mapping",
"identity": "rim"
}, {
"uri": "http://www.omg.org/spec/ServD/1.0/",
"name": "ServD",
"identity": "servd"
} ],
"abstract": false,
"copyright": "Copyright HL7 Europe. Licensed under Creative Commons public domain (CC0 1.0).",
"type": "Identifier",
"experimental": null,
"resourceType": "StructureDefinition",
"title": "Identifier: Accession Number",
"package_version": "1.0.0-ballot",
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
"valueInteger": 1
}, {
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
"valueCode": "draft"
} ],
"snapshot": {
"element": [ {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
} ],
"path": "Identifier",
"min": 0,
"definition": "An identifier - identifies some entity uniquely and unambiguously. Typically this is used for business identifiers.",
"isModifier": false,
"short": "An identifier intended for computation",
"mapping": [ {
"map": "n/a",
"identity": "rim"
}, {
"map": "CX / EI (occasionally, more often EI maps to a resource id or a URL)",
"identity": "v2"
}, {
"map": "II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT]",
"identity": "rim"
}, {
"map": "Identifier",
"identity": "servd"
} ],
"max": "*",
"id": "Identifier",
"condition": [ "ele-1" ],
"base": {
"max": "*",
"min": 0,
"path": "Identifier"
}
}, {
"path": "Identifier.id",
"min": 0,
"definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
"isModifier": false,
"short": "Unique id for inter-element referencing",
"mapping": [ {
"map": "n/a",
"identity": "rim"
} ],
"type": [ {
"code": "http://hl7.org/fhirpath/System.String",
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
"valueUrl": "string"
} ]
} ],
"representation": [ "xmlAttr" ],
"max": "1",
"id": "Identifier.id",
"base": {
"max": "1",
"min": 0,
"path": "Element.id"
},
"isSummary": false
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
}, {
"key": "ext-1",
"human": "Must have either extensions or value[x], not both",
"xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
"source": "http://hl7.org/fhir/StructureDefinition/Extension",
"severity": "error",
"expression": "extension.exists() != value.exists()"
} ],
"path": "Identifier.extension",
"min": 0,
"definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, 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.",
"isModifier": false,
"short": "Additional content defined by implementations",
"mapping": [ {
"map": "n/a",
"identity": "rim"
} ],
"slicing": {
"rules": "open",
"description": "Extensions are always sliced by (at least) url",
"discriminator": [ {
"path": "url",
"type": "value"
} ]
},
"type": [ {
"code": "Extension"
} ],
"alias": [ "extensions", "user content" ],
"max": "*",
"id": "Identifier.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.",
"base": {
"max": "*",
"min": 0,
"path": "Element.extension"
},
"isSummary": false
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
} ],
"path": "Identifier.use",
"requirements": "Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.",
"min": 0,
"definition": "The purpose of this identifier.",
"isModifier": true,
"short": "usual | official | temp | secondary | old (If known)",
"mapping": [ {
"map": "N/A",
"identity": "v2"
}, {
"map": "Role.code or implied by context",
"identity": "rim"
} ],
"type": [ {
"code": "code"
} ],
"binding": {
"strength": "required",
"valueSet": "http://hl7.org/fhir/ValueSet/identifier-use|4.0.1",
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
"valueString": "IdentifierUse"
} ],
"description": "Identifies the purpose for this identifier, if known ."
},
"max": "1",
"id": "Identifier.use",
"comment": "Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.",
"base": {
"max": "1",
"min": 0,
"path": "Identifier.use"
},
"isModifierReason": "This is labeled as \"Is Modifier\" because applications should not mistake a temporary id for a permanent one.",
"isSummary": true
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
} ],
"path": "Identifier.type",
"requirements": "Allows users to make use of identifiers when the identifier system is not known.",
"min": 1,
"definition": "A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.",
"isModifier": false,
"short": "Description of identifier",
"mapping": [ {
"map": "CX.5",
"identity": "v2"
}, {
"map": "Role.code or implied by context",
"identity": "rim"
} ],
"type": [ {
"code": "CodeableConcept"
} ],
"binding": {
"strength": "extensible",
"valueSet": "http://hl7.org/fhir/ValueSet/identifier-type|4.0.1",
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
"valueString": "IdentifierType"
} ],
"description": "A coded type for an identifier that can be used to determine which identifier to use for a specific purpose."
},
"max": "1",
"id": "Identifier.type",
"comment": "This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.",
"base": {
"max": "1",
"min": 0,
"path": "Identifier.type"
},
"isSummary": true
}, {
"path": "Identifier.type.id",
"min": 0,
"definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
"isModifier": false,
"short": "Unique id for inter-element referencing",
"mapping": [ {
"map": "n/a",
"identity": "rim"
} ],
"type": [ {
"code": "http://hl7.org/fhirpath/System.String",
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
"valueUrl": "string"
} ]
} ],
"representation": [ "xmlAttr" ],
"max": "1",
"id": "Identifier.type.id",
"base": {
"max": "1",
"min": 0,
"path": "Element.id"
},
"isSummary": false
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
}, {
"key": "ext-1",
"human": "Must have either extensions or value[x], not both",
"xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
"source": "http://hl7.org/fhir/StructureDefinition/Extension",
"severity": "error",
"expression": "extension.exists() != value.exists()"
} ],
"path": "Identifier.type.extension",
"min": 0,
"definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, 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.",
"isModifier": false,
"short": "Additional content defined by implementations",
"mapping": [ {
"map": "n/a",
"identity": "rim"
} ],
"slicing": {
"rules": "open",
"description": "Extensions are always sliced by (at least) url",
"discriminator": [ {
"path": "url",
"type": "value"
} ]
},
"type": [ {
"code": "Extension"
} ],
"alias": [ "extensions", "user content" ],
"max": "*",
"id": "Identifier.type.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.",
"base": {
"max": "*",
"min": 0,
"path": "Element.extension"
},
"isSummary": false
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
} ],
"path": "Identifier.type.coding",
"requirements": "Allows for alternative encodings within a code system, and translations to other code systems.",
"min": 1,
"definition": "A reference to a code defined by a terminology system.",
"isModifier": false,
"short": "Code defined by a terminology system",
"mapping": [ {
"map": "C*E.1-8, C*E.10-22",
"identity": "v2"
}, {
"map": "union(., ./translation)",
"identity": "rim"
}, {
"map": "fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding",
"identity": "orim"
} ],
"slicing": {
"rules": "open",
"ordered": false,
"discriminator": [ {
"path": "$this",
"type": "value"
} ]
},
"type": [ {
"code": "Coding"
} ],
"max": "*",
"id": "Identifier.type.coding",
"comment": "Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.",
"base": {
"max": "*",
"min": 0,
"path": "CodeableConcept.coding"
},
"isSummary": true
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
} ],
"path": "Identifier.type.coding",
"requirements": "Allows for alternative encodings within a code system, and translations to other code systems.",
"min": 1,
"definition": "A reference to a code defined by a terminology system.",
"isModifier": false,
"short": "Code defined by a terminology system",
"mapping": [ {
"map": "C*E.1-8, C*E.10-22",
"identity": "v2"
}, {
"map": "union(., ./translation)",
"identity": "rim"
}, {
"map": "fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding",
"identity": "orim"
} ],
"type": [ {
"code": "Coding"
} ],
"sliceName": "v2-0203-coding",
"max": "1",
"id": "Identifier.type.coding:v2-0203-coding",
"comment": "Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.",
"patternCoding": {
"code": "ACSN",
"system": "http://terminology.hl7.org/CodeSystem/v2-0203"
},
"base": {
"max": "*",
"min": 0,
"path": "CodeableConcept.coding"
},
"isSummary": true
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
} ],
"path": "Identifier.type.coding",
"requirements": "Allows for alternative encodings within a code system, and translations to other code systems.",
"min": 0,
"definition": "A reference to a code defined by a terminology system.",
"isModifier": false,
"short": "Code defined by a terminology system",
"mapping": [ {
"map": "C*E.1-8, C*E.10-22",
"identity": "v2"
}, {
"map": "union(., ./translation)",
"identity": "rim"
}, {
"map": "fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding",
"identity": "orim"
} ],
"type": [ {
"code": "Coding"
} ],
"sliceName": "dcm",
"max": "1",
"id": "Identifier.type.coding:dcm",
"comment": "Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.",
"patternCoding": {
"code": "121022",
"system": "http://dicom.nema.org/resources/ontology/DCM",
"display": "Accession Number"
},
"base": {
"max": "*",
"min": 0,
"path": "CodeableConcept.coding"
},
"isSummary": true
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
} ],
"path": "Identifier.type.text",
"requirements": "The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.",
"min": 0,
"definition": "A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.",
"isModifier": false,
"short": "Plain text representation of the concept",
"mapping": [ {
"map": "C*E.9. But note many systems use C*E.2 for this",
"identity": "v2"
}, {
"map": "./originalText[mediaType/code=\"text/plain\"]/data",
"identity": "rim"
}, {
"map": "fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText",
"identity": "orim"
} ],
"type": [ {
"code": "string"
} ],
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable",
"valueBoolean": true
} ],
"max": "1",
"id": "Identifier.type.text",
"comment": "Very often the text is the same as a displayName of one of the codings.",
"base": {
"max": "1",
"min": 0,
"path": "CodeableConcept.text"
},
"isSummary": true
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
} ],
"path": "Identifier.system",
"requirements": "There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.",
"min": 1,
"definition": "Establishes the namespace for the value - that is, a URL that describes a set values that are unique.",
"isModifier": false,
"short": "The namespace for the identifier value",
"mapping": [ {
"map": "CX.4 / EI-2-4",
"identity": "v2"
}, {
"map": "II.root or Role.id.root",
"identity": "rim"
}, {
"map": "./IdentifierType",
"identity": "servd"
} ],
"type": [ {
"code": "uri"
} ],
"max": "1",
"id": "Identifier.system",
"comment": "Identifier.system is always case sensitive.",
"example": [ {
"label": "General",
"valueUri": "http://www.acme.com/identifiers/patient"
} ],
"base": {
"max": "1",
"min": 0,
"path": "Identifier.system"
},
"isSummary": true
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
} ],
"path": "Identifier.value",
"min": 1,
"definition": "The portion of the identifier typically relevant to the user and which is unique within the context of the system.",
"isModifier": false,
"short": "The value that is unique",
"mapping": [ {
"map": "CX.1 / EI.1",
"identity": "v2"
}, {
"map": "II.extension or II.root if system indicates OID or GUID (Or Role.id.extension or root)",
"identity": "rim"
}, {
"map": "./Value",
"identity": "servd"
} ],
"type": [ {
"code": "string"
} ],
"max": "1",
"id": "Identifier.value",
"comment": "If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the [Rendered Value extension](http://hl7.org/fhir/R4/extension-rendered-value.html). Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.",
"example": [ {
"label": "General",
"valueString": "123456"
} ],
"base": {
"max": "1",
"min": 0,
"path": "Identifier.value"
},
"isSummary": true
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
} ],
"path": "Identifier.period",
"min": 0,
"definition": "Time period during which identifier is/was valid for use.",
"isModifier": false,
"short": "Time period when id is/was valid for use",
"mapping": [ {
"map": "CX.7 + CX.8",
"identity": "v2"
}, {
"map": "Role.effectiveTime or implied by context",
"identity": "rim"
}, {
"map": "./StartDate and ./EndDate",
"identity": "servd"
} ],
"type": [ {
"code": "Period"
} ],
"max": "1",
"id": "Identifier.period",
"base": {
"max": "1",
"min": 0,
"path": "Identifier.period"
},
"isSummary": true
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
} ],
"path": "Identifier.assigner",
"min": 0,
"definition": "Organization that issued/manages the identifier.",
"isModifier": false,
"short": "Organization that issued id (may be just text)",
"mapping": [ {
"map": "CX.4 / (CX.4,CX.9,CX.10)",
"identity": "v2"
}, {
"map": "II.assigningAuthorityName but note that this is an improper use by the definition of the field. Also Role.scoper",
"identity": "rim"
}, {
"map": "./IdentifierIssuingAuthority",
"identity": "servd"
} ],
"type": [ {
"code": "Reference",
"targetProfile": [ "http://hl7.org/fhir/StructureDefinition/Organization|4.0.1" ]
} ],
"max": "1",
"id": "Identifier.assigner",
"comment": "The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.",
"base": {
"max": "1",
"min": 0,
"path": "Identifier.assigner"
},
"isSummary": true
} ],
"extension": [ {
"url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
"valueString": "4.0.1"
} ]
},
"status": "draft",
"id": "142e1c42-51b5-4a91-98fa-1c6d3975a0c1",
"kind": "complex-type",
"url": "http://hl7.eu/fhir/imaging/StructureDefinition/AccessionNumberIdentifierEuImaging",
"version": "1.0.0-ballot",
"differential": {
"element": [ {
"id": "Identifier",
"path": "Identifier"
}, {
"id": "Identifier.type",
"min": 1,
"path": "Identifier.type"
}, {
"id": "Identifier.type.coding",
"min": 1,
"path": "Identifier.type.coding",
"slicing": {
"rules": "open",
"ordered": false,
"discriminator": [ {
"path": "$this",
"type": "value"
} ]
}
}, {
"id": "Identifier.type.coding:v2-0203-coding",
"max": "1",
"min": 1,
"path": "Identifier.type.coding",
"sliceName": "v2-0203-coding",
"patternCoding": {
"code": "ACSN",
"system": "http://terminology.hl7.org/CodeSystem/v2-0203"
}
}, {
"id": "Identifier.type.coding:dcm",
"max": "1",
"min": 0,
"path": "Identifier.type.coding",
"sliceName": "dcm",
"patternCoding": {
"code": "121022",
"system": "http://dicom.nema.org/resources/ontology/DCM",
"display": "Accession Number"
}
}, {
"id": "Identifier.system",
"min": 1,
"path": "Identifier.system"
}, {
"id": "Identifier.value",
"min": 1,
"path": "Identifier.value"
} ]
},
"contact": [ {
"name": "HL7 Europe",
"telecom": [ {
"value": "http://hl7.eu",
"system": "url"
} ]
} ],
"baseDefinition": "http://hl7.org/fhir/StructureDefinition/Identifier"
}