Profiles & Operations Index > Profile: AllergyIntolerance
Profile: AllergyIntolerance
Canonical URL:http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-allergyintolerance
Simplifier project page: Allergy Intolerance (PS-ON)
Derived from: AllergyIntolerance (R4)
Formal Views of Profile Content
Description of Profiles, Differentials, Snapshots and how the different presentations work
Differential View
AllergyIntolerancePSON (AllergyIntolerance) | I | AllergyIntolerance | There are no (further) constraints on this element Element idAllergyIntolerance Allergy or Intolerance (generally: Risk of adverse reaction to a substance) Alternate namesAllergy, Intolerance, Adverse Reaction DefinitionRisk of harmful or undesirable, physiological response which is unique to an individual and associated with exposure to a substance. Substances include, but are not limited to: a therapeutic substance administered correctly at an appropriate dosage for the individual; food; material derived from plants or animals; or venom from insect stings.
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id | Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.id Logical id of this artifact DefinitionThe logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes. The only time that a resource does not have an id is when it is being submitted to the server using a create operation. |
meta | S Σ | 1..1 | Meta | There are no (further) constraints on this element Element idAllergyIntolerance.meta Metadata about the resource DefinitionThe metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.meta.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.meta.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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versionId | Σ | 0..1 | id | There are no (further) constraints on this element Element idAllergyIntolerance.meta.versionId Version specific identifier DefinitionThe version specific identifier, as it appears in the version portion of the URL. This value changes when the resource is created, updated, or deleted. The server assigns this value, and ignores what the client specifies, except in the case that the server is imposing version integrity on updates/deletes.
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lastUpdated | Σ | 0..1 | instant | There are no (further) constraints on this element Element idAllergyIntolerance.meta.lastUpdated When the resource version last changed DefinitionWhen the resource last changed - e.g. when the version changed. This value is always populated except when the resource is first being created. The server / resource manager sets this value; what a client provides is irrelevant. This is equivalent to the HTTP Last-Modified and SHOULD have the same value on a read interaction.
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source | Σ | 0..1 | uri | There are no (further) constraints on this element Element idAllergyIntolerance.meta.source Identifies where the resource comes from DefinitionA uri that identifies the source system of the resource. This provides a minimal amount of Provenance information that can be used to track or differentiate the source of information in the resource. The source may identify another FHIR server, document, message, database, etc. In the provenance resource, this corresponds to Provenance.entity.what[x]. The exact use of the source (and the implied Provenance.entity.role) is left to implementer discretion. Only one nominated source is allowed; for additional provenance details, a full Provenance resource should be used. This element can be used to indicate where the current master source of a resource that has a canonical URL if the resource is no longer hosted at the canonical URL.
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profile | S Σ | 1..* | canonical(StructureDefinition) | There are no (further) constraints on this element Element idAllergyIntolerance.meta.profile Profiles this resource claims to conform to DefinitionA list of profiles (references to StructureDefinition resources) that this resource claims to conform to. The URL is a reference to StructureDefinition.url. It is up to the server and/or other infrastructure of policy to determine whether/how these claims are verified and/or updated over time. The list of profile URLs is a set. canonical(StructureDefinition) Constraints
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security | Σ | 0..* | CodingBinding | There are no (further) constraints on this element Element idAllergyIntolerance.meta.security Security Labels applied to this resource DefinitionSecurity labels applied to this resource. These tags connect specific resources to the overall security policy and infrastructure. The security labels can be updated without changing the stated version of the resource. The list of security labels is a set. Uniqueness is based the system/code, and version and display are ignored. Security Labels from the Healthcare Privacy and Security Classification System.
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tag | Σ | 0..* | Coding | There are no (further) constraints on this element Element idAllergyIntolerance.meta.tag Tags applied to this resource DefinitionTags applied to this resource. Tags are intended to be used to identify and relate resources to process and workflow, and applications are not required to consider the tags when interpreting the meaning of a resource. The tags can be updated without changing the stated version of the resource. The list of tags is a set. Uniqueness is based the system/code, and version and display are ignored. Codes that represent various types of tags, commonly workflow-related; e.g. "Needs review by Dr. Jones".
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implicitRules | Σ ?! | 0..1 | uri | There are no (further) constraints on this element Element idAllergyIntolerance.implicitRules A set of rules under which this content was created DefinitionA reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc. Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.
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language | 0..1 | codeBinding | There are no (further) constraints on this element Element idAllergyIntolerance.language Language of the resource content DefinitionThe base language in which the resource is written. Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute). A human language.
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text | 0..1 | Narrative | There are no (further) constraints on this element Element idAllergyIntolerance.text Text summary of the resource, for human interpretation Alternate namesnarrative, html, xhtml, display DefinitionA human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety. Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.
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contained | 0..* | Resource | There are no (further) constraints on this element Element idAllergyIntolerance.contained Contained, inline Resources Alternate namesinline resources, anonymous resources, contained resources DefinitionThese resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope. This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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abatement-datetime | I | 0..1 | Extension | Element idAllergyIntolerance.extension:abatement-datetime Abatement datetime Alternate namesextensions, user content DefinitionThe date or estimated date that the condition resolved or went into remission. 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. http://hl7.org/fhir/uv/ips/StructureDefinition/abatement-dateTime-uv-ips Constraints
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modifierExtension | ?! I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.modifierExtension Extensions that cannot be ignored Alternate namesextensions, user content DefinitionMay be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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 is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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identifier | Σ | 0..* | Identifier | There are no (further) constraints on this element Element idAllergyIntolerance.identifier External ids for this item DefinitionBusiness identifiers assigned to this AllergyIntolerance by the performer or other systems which remain constant as the resource is updated and propagates from server to server. Allows identification of the AllergyIntolerance as it is known by various participating systems and in a way that remains consistent across servers. This is a business identifier, not a resource identifier (see discussion). It is best practice for the identifier to only appear on a single resource instance, however business practices may occasionally dictate that multiple resource instances with the same identifier can exist - possibly even with different resource types. For example, multiple Patient and a Person resource instance might share the same social insurance number.
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clinicalStatus | Σ ?! I | 0..1 | CodeableConceptBinding | There are no (further) constraints on this element Element idAllergyIntolerance.clinicalStatus active | inactive | resolved DefinitionThe clinical status of the allergy or intolerance. Refer to discussion if clincalStatus is missing data. The data type is CodeableConcept because clinicalStatus has some clinical judgment involved, such that there might need to be more specificity than the required FHIR value set allows. For example, a SNOMED coding might allow for additional specificity. The clinical status of the allergy or intolerance.
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verificationStatus | Σ ?! I | 0..1 | CodeableConceptBinding | There are no (further) constraints on this element Element idAllergyIntolerance.verificationStatus unconfirmed | confirmed | refuted | entered-in-error DefinitionAssertion about certainty associated with the propensity, or potential risk, of a reaction to the identified substance (including pharmaceutical product). The data type is CodeableConcept because verificationStatus has some clinical judgment involved, such that there might need to be more specificity than the required FHIR value set allows. For example, a SNOMED coding might allow for additional specificity. Assertion about certainty associated with a propensity, or potential risk, of a reaction to the identified substance.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.verificationStatus.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.verificationStatus.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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coding | Σ | 0..* | Coding | Element idAllergyIntolerance.verificationStatus.coding Code defined by a terminology system DefinitionA reference to a code defined by a terminology system. Allows for alternative encodings within a code system, and translations to other code systems. In the scope of the IPS-UV the entered-in-error concept is not allowed and so the modifier on this element has been removed. While the IPS-UV specification considers this a MS element, some systems will not have a field directly representing verificationStatus; further feedback is required on whether these systems are still expected to be able to demonstrate they can construct this element using additional data from the system when developing the patient summary instance Unordered, Open, by $this(Pattern) Discriminated by value set Constraints
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HL7VerificationStatus | Σ | 0..* | CodingBinding | Element idAllergyIntolerance.verificationStatus.coding:HL7VerificationStatus Required value set for AllergyIntolerance Verification Status. DefinitionCode for an allergy or intolerance statement. Represents whether an allergy/intolerance is active or resolved (indicating no longer active). Allows for alternative encodings within a code system, and translations to other code systems. 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. HL7 required value set for AllergyIntolerance Verification Status.
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StatusCode | Σ | 0..* | CodingBinding | Element idAllergyIntolerance.verificationStatus.coding:StatusCode Code for allergy or intolerance status DefinitionCode for an allergy or intolerance statement. Represents whether an allergy/intolerance is active or resolved (indicating no longer active). Allows for alternative encodings within a code system, and translations to other code systems. 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. Assertion about certainty associated with a propensity, or potential risk, of a reaction to the identified substance.
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text | Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.verificationStatus.text Plain text representation of the concept DefinitionA 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. 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. Very often the text is the same as a displayName of one of the codings.
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type | S Σ | 0..1 | codeBinding | There are no (further) constraints on this element Element idAllergyIntolerance.type allergy | intolerance - Underlying mechanism (if known) Alternate namesCategory, Class DefinitionIdentification of the underlying physiological mechanism for the reaction risk. Allergic (typically immune-mediated) reactions have been traditionally regarded as an indicator for potential escalation to significant future risk. Contemporary knowledge suggests that some reactions previously thought to be immune-mediated are, in fact, non-immune, but in some cases can still pose a life threatening risk. It is acknowledged that many clinicians might not be in a position to distinguish the mechanism of a particular reaction. Often the term "allergy" is used rather generically and may overlap with the use of "intolerance" - in practice the boundaries between these two concepts might not be well-defined or understood. This data element is included nevertheless, because many legacy systems have captured this attribute. Immunologic testing may provide supporting evidence for the basis of the reaction and the causative substance, but no tests are 100% sensitive or specific for sensitivity to a particular substance. If, as is commonly the case, it is unclear whether the reaction is due to an allergy or an intolerance, then the type element should be omitted from the resource. Identification of the underlying physiological mechanism for a Reaction Risk.
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category | Σ | 0..* | codeBinding | There are no (further) constraints on this element Element idAllergyIntolerance.category food | medication | environment | biologic Alternate namesCategory, Type, Reaction Type, Class DefinitionCategory of the identified substance. This data element has been included because it is currently being captured in some clinical systems. This data can be derived from the substance where coding systems are used, and is effectively redundant in that situation. When searching on category, consider the implications of AllergyIntolerance resources without a category. For example, when searching on category = medication, medication allergies that don't have a category valued will not be returned. Refer to search for more information on how to search category with a :missing modifier to get allergies that don't have a category. Additionally, category should be used with caution because category can be subjective based on the sender. Category of an identified substance associated with allergies or intolerances.
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criticality | Σ | 0..1 | codeBinding | Element idAllergyIntolerance.criticality low | high | unable-to-assess Alternate namesSeverity, Seriousness, Contra-indication, Risk DefinitionEstimate of the potential clinical harm, or seriousness, of the reaction to the identified substance. While the IPS-UV specification considers this a MS element, some systems will not have a field directly representing the criticality of an allergy or intolerance, it may be possible for systems to populate the unable-to-assess code, however further feedback is required on whether these systems are expected to be able to demonstrate they can construct criticality when developing the patient summary instance Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance.
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code | S Σ | 1..1 | CodeableConceptPSONBinding | Element idAllergyIntolerance.code Concept - reference to a terminology or just text Alternate namesCode DefinitionA concept that may be defined by a formal reference to a terminology or ontology or may be provided by text. IPS-UV allows the supply of coding, text, or both. Use of the IPS-UV ValueSet is currently marked as preferred, work is underway to determine the pan-Canadian terminology that will be preferred and/or socialized for this element. Until then, only the existing slices are put forward below. They are considered optional, meaning an implementer can still be conformant if they use another subset of codes from SNOMED CT, SNOMED CT CA or another Code System. Codes for allergic condition from the SNOMED CT Canadian edition value set
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.code.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.code.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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coding | S Σ | 0..* | CodingPSON | Element idAllergyIntolerance.code.coding A reference to a code defined by a terminology system DefinitionA reference to a code defined by a terminology system. Allows for alternative encodings within a code system, and translations to other code systems. 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. Unordered, Open, by $this(Pattern) Discriminated by the bound value set Constraints
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codeAllergyCA | S Σ | 0..* | CodingPSONBinding | Element idAllergyIntolerance.code.coding:codeAllergyCA Optional slice for code for allergy or intolerance from the SNOMED CT CA code set DefinitionCode for an allergy or intolerance statement that is selected from the SNOMED CT Canadian edition value set. Allows for alternative encodings within a code system, and translations to other code systems. 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. Codes for allergic condition from the SNOMED CT Canadian edition value set
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absentOrUnknownAllergyIntolerance | S Σ | 0..* | CodingPSONBinding | Element idAllergyIntolerance.code.coding:absentOrUnknownAllergyIntolerance Optional slice for code for absent or unknown allergy or intolerance DefinitionCode for an allergy or intolerance statement (either a positive or a negated/excluded statement). This describes a categorical negated statement (e.g., "No known allergy"). Allows for alternative encodings within a code system, and translations to other code systems. The use of Null values in v3 implementations and SNOMED CT 716186003 (No known allergy) code are common in Canadian implementations - given the semantic equivilance to the codes no-allergy-info and no-known-allergies, Canadian implementers are encouraged to map to the IPS-UV value set (and provide the original source code as an alternate coding) when noting this concept in patient summaries. negation/exclusion codes for reporting no known allergies or not available data.
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text | S Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.code.text Plain text representation of the concept DefinitionA 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. 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. Very often the text is the same as a displayName of one of the codings.
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patient | S Σ I | 1..1 | Reference(PatientPSON) | Element idAllergyIntolerance.patient Who the sensitivity is for Alternate namesPatient DefinitionThe patient who has the allergy or intolerance. References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.patient.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.patient.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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reference | S Σ I | 1..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.patient.reference Literal reference, Relative, internal or absolute URL DefinitionA reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources. Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.
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type | Σ | 0..1 | uriBinding | There are no (further) constraints on this element Element idAllergyIntolerance.patient.type Type the reference refers to (e.g. "Patient") DefinitionThe expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources). This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified. Aa resource (or, for logical models, the URI of the logical model).
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identifier | Σ | 0..1 | Identifier | There are no (further) constraints on this element Element idAllergyIntolerance.patient.identifier Logical reference, when literal reference is not known DefinitionAn identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference. When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).
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display | Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.patient.display Text alternative for the resource DefinitionPlain text narrative that identifies the resource in addition to the resource reference. This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.
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encounter | I | 0..1 | Reference(Encounter) | There are no (further) constraints on this element Element idAllergyIntolerance.encounter Encounter when the allergy or intolerance was asserted DefinitionThe encounter when the allergy or intolerance was asserted. References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
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onset[x] | 0..1 | Element idAllergyIntolerance.onset[x] When allergy or intolerance was identified DefinitionEstimated or actual date, date-time, or age when allergy or intolerance was identified. Unordered, Open, by $this(Type) Constraints
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(All Slices) | There are no (further) constraints on this element | |||
onsetAge | Age | There are no (further) constraints on this element Data type | ||
onsetPeriod | Period | There are no (further) constraints on this element Data type | ||
onsetRange | Range | There are no (further) constraints on this element Data type | ||
onsetString | string | There are no (further) constraints on this element Data type | ||
onsetDateTime | S | 0..1 | dateTime | There are no (further) constraints on this element Element idAllergyIntolerance.onset[x]:onsetDateTime When allergy or intolerance was identified DefinitionEstimated or actual date, date-time, or age when allergy or intolerance was identified.
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recordedDate | 0..1 | dateTime | There are no (further) constraints on this element Element idAllergyIntolerance.recordedDate Date first version of the resource instance was recorded DefinitionThe recordedDate represents when this particular AllergyIntolerance record was created in the system, which is often a system-generated date.
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recorder | I | 0..1 | Reference(Practitioner | PractitionerRole | Patient | RelatedPerson) | There are no (further) constraints on this element Element idAllergyIntolerance.recorder Who recorded the sensitivity Alternate namesAuthor DefinitionIndividual who recorded the record and takes responsibility for its content. References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository. Reference(Practitioner | PractitionerRole | Patient | RelatedPerson) Constraints
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asserter | Σ I | 0..1 | Reference(Patient | RelatedPerson | Practitioner | PractitionerRole) | There are no (further) constraints on this element Element idAllergyIntolerance.asserter Source of the information about the allergy Alternate namesSource, Informant DefinitionThe source of the information about the allergy that is recorded. The recorder takes responsibility for the content, but can reference the source from where they got it. Reference(Patient | RelatedPerson | Practitioner | PractitionerRole) Constraints
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lastOccurrence | 0..1 | dateTime | There are no (further) constraints on this element Element idAllergyIntolerance.lastOccurrence Date(/time) of last known occurrence of a reaction DefinitionRepresents the date and/or time of the last known occurrence of a reaction event. This date may be replicated by one of the Onset of Reaction dates. Where a textual representation of the date of last occurrence is required e.g. 'In Childhood, '10 years ago' the Comment element should be used.
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note | 0..* | Annotation | There are no (further) constraints on this element Element idAllergyIntolerance.note Additional text not captured in other fields DefinitionAdditional narrative about the propensity for the Adverse Reaction, not captured in other fields. For example: including reason for flagging a seriousness of 'High Risk'; and instructions related to future exposure or administration of the substance, such as administration within an Intensive Care Unit or under corticosteroid cover. The notes should be related to an allergy or intolerance as a condition in general and not related to any particular episode of it. For episode notes and descriptions, use AllergyIntolerance.event.description and AllergyIntolerance.event.notes.
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reaction | S | 0..* | BackboneElement | There are no (further) constraints on this element Element idAllergyIntolerance.reaction Adverse Reaction Events linked to exposure to substance DefinitionDetails about each adverse reaction event linked to exposure to the identified substance.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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modifierExtension | Σ ?! I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.modifierExtension Extensions that cannot be ignored even if unrecognized Alternate namesextensions, user content, modifiers DefinitionMay be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. 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.
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substance | 0..1 | CodeableConcept | Element idAllergyIntolerance.reaction.substance Specific substance or pharmaceutical product considered to be responsible for event DefinitionIdentification of the specific substance (or pharmaceutical product) considered to be responsible for the Adverse Reaction event. Note: the substance for a specific reaction may be different from the substance identified as the cause of the risk, but it must be consistent with it. For instance, it may be a more specific substance (e.g. a brand medication) or a composite product that includes the identified substance. It must be clinically safe to only process the 'code' and ignore the 'reaction.substance'. If a receiving system is unable to confirm that AllergyIntolerance.reaction.substance falls within the semantic scope of AllergyIntolerance.code, then the receiving system should ignore AllergyIntolerance.reaction.substance. The IPS-UV does not consider this element MS, however some Canadian systems may capture allergen substances separately from allergyIntolerance.code. Further investigation is required to determine what approaches are in use by participating jurisdictions. Codes defining the type of the substance (including pharmaceutical products).
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manifestation | S | 1..* | CodeableConceptPSONBinding | Element idAllergyIntolerance.reaction.manifestation Concept - reference to a terminology or just text Alternate namesSymptoms, Signs DefinitionA concept that may be defined by a formal reference to a terminology or ontology or may be provided by text. For all CodeableConcepts, at least one of coding or text must be present. If coding contains only a display value (no code) then CodeableConcept must include text. Clinical symptoms and/or signs that are observed or associated with an Adverse Reaction Event.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.manifestation.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.manifestation.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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coding | S Σ | 0..* | CodingPSON | Element idAllergyIntolerance.reaction.manifestation.coding A reference to a code defined by a terminology system DefinitionA reference to a code defined by a terminology system. Allows for alternative encodings within a code system, and translations to other code systems. 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. Unordered, Open, by $this(Pattern) Discriminated by the bound value set Constraints
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manifestationSCTCA | S Σ | 0..* | CodingPSONBinding | Element idAllergyIntolerance.reaction.manifestation.coding:manifestationSCTCA Optional slice for representing code for the allergy or intolerance reaction manifestation from the SNOMED CT Canadian edition value set. DefinitionCode for an allergy or intolerance reaction manifestation statement that is selected from the SNOMED CT Canadian edition value set. Allows for alternative encodings within a code system, and translations to other code systems. 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. https://fhir.infoway-inforoute.ca/ValueSet/clinicalfindingcode (required) Constraints
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text | S Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.manifestation.text Plain text representation of the concept DefinitionA 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. 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. Very often the text is the same as a displayName of one of the codings.
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description | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.description Description of the event as a whole Alternate namesNarrative, Text DefinitionText description about the reaction as a whole, including details of the manifestation if required. Use the description to provide any details of a particular event of the occurred reaction such as circumstances, reaction specifics, what happened before/after. Information, related to the event, but not describing a particular care should be captured in the comment field. For example: at the age of four, the patient was given penicillin for strep throat and subsequently developed severe hives.
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onset | 0..1 | dateTime | Element idAllergyIntolerance.reaction.onset Date(/time) when manifestations showed DefinitionRecord of the date and/or time of the onset of the Reaction. While IPS-UV considers this a MS element, some systems may not capture the onset of the reaction separate from the onset of the allergy. It should be sent if available but further feedback is required on whether these systems are still expected to be able to demonstrate they can construct it for the first release of the PS-ON specification.
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severity | S | 0..1 | codeBinding | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.severity mild | moderate | severe (of event as a whole) DefinitionClinical assessment of the severity of the reaction event as a whole, potentially considering multiple different manifestations. It is acknowledged that this assessment is very subjective. There may be some specific practice domains where objective scales have been applied. Objective scales can be included in this model as extensions. Clinical assessment of the severity of a reaction event as a whole, potentially considering multiple different manifestations.
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exposureRoute | 0..1 | CodeableConcept | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.exposureRoute How the subject was exposed to the substance DefinitionIdentification of the route by which the subject was exposed to the substance. Coding of the route of exposure with a terminology should be used wherever possible. A coded concept describing the route or physiological path of administration of a therapeutic agent into or onto the body of a subject.
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note | 0..* | Annotation | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.note Text about event not captured in other fields DefinitionAdditional text about the adverse reaction event not captured in other fields. Use this field to record information indirectly related to a particular event and not captured in the description. For example: Clinical records are no longer available, recorded based on information provided to the patient by her mother and her mother is deceased.
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Hybrid View
AllergyIntolerancePSON (AllergyIntolerance) | I | AllergyIntolerance | There are no (further) constraints on this element Element idAllergyIntolerance Allergy or Intolerance (generally: Risk of adverse reaction to a substance) Alternate namesAllergy, Intolerance, Adverse Reaction DefinitionRisk of harmful or undesirable, physiological response which is unique to an individual and associated with exposure to a substance. Substances include, but are not limited to: a therapeutic substance administered correctly at an appropriate dosage for the individual; food; material derived from plants or animals; or venom from insect stings.
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id | Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.id Logical id of this artifact DefinitionThe logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes. The only time that a resource does not have an id is when it is being submitted to the server using a create operation. |
meta | S Σ | 1..1 | Meta | There are no (further) constraints on this element Element idAllergyIntolerance.meta Metadata about the resource DefinitionThe metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.meta.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.meta.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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versionId | Σ | 0..1 | id | There are no (further) constraints on this element Element idAllergyIntolerance.meta.versionId Version specific identifier DefinitionThe version specific identifier, as it appears in the version portion of the URL. This value changes when the resource is created, updated, or deleted. The server assigns this value, and ignores what the client specifies, except in the case that the server is imposing version integrity on updates/deletes.
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lastUpdated | Σ | 0..1 | instant | There are no (further) constraints on this element Element idAllergyIntolerance.meta.lastUpdated When the resource version last changed DefinitionWhen the resource last changed - e.g. when the version changed. This value is always populated except when the resource is first being created. The server / resource manager sets this value; what a client provides is irrelevant. This is equivalent to the HTTP Last-Modified and SHOULD have the same value on a read interaction.
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source | Σ | 0..1 | uri | There are no (further) constraints on this element Element idAllergyIntolerance.meta.source Identifies where the resource comes from DefinitionA uri that identifies the source system of the resource. This provides a minimal amount of Provenance information that can be used to track or differentiate the source of information in the resource. The source may identify another FHIR server, document, message, database, etc. In the provenance resource, this corresponds to Provenance.entity.what[x]. The exact use of the source (and the implied Provenance.entity.role) is left to implementer discretion. Only one nominated source is allowed; for additional provenance details, a full Provenance resource should be used. This element can be used to indicate where the current master source of a resource that has a canonical URL if the resource is no longer hosted at the canonical URL.
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profile | S Σ | 1..* | canonical(StructureDefinition) | There are no (further) constraints on this element Element idAllergyIntolerance.meta.profile Profiles this resource claims to conform to DefinitionA list of profiles (references to StructureDefinition resources) that this resource claims to conform to. The URL is a reference to StructureDefinition.url. It is up to the server and/or other infrastructure of policy to determine whether/how these claims are verified and/or updated over time. The list of profile URLs is a set. canonical(StructureDefinition) Constraints
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security | Σ | 0..* | CodingBinding | There are no (further) constraints on this element Element idAllergyIntolerance.meta.security Security Labels applied to this resource DefinitionSecurity labels applied to this resource. These tags connect specific resources to the overall security policy and infrastructure. The security labels can be updated without changing the stated version of the resource. The list of security labels is a set. Uniqueness is based the system/code, and version and display are ignored. Security Labels from the Healthcare Privacy and Security Classification System.
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tag | Σ | 0..* | Coding | There are no (further) constraints on this element Element idAllergyIntolerance.meta.tag Tags applied to this resource DefinitionTags applied to this resource. Tags are intended to be used to identify and relate resources to process and workflow, and applications are not required to consider the tags when interpreting the meaning of a resource. The tags can be updated without changing the stated version of the resource. The list of tags is a set. Uniqueness is based the system/code, and version and display are ignored. Codes that represent various types of tags, commonly workflow-related; e.g. "Needs review by Dr. Jones".
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implicitRules | Σ ?! | 0..1 | uri | There are no (further) constraints on this element Element idAllergyIntolerance.implicitRules A set of rules under which this content was created DefinitionA reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc. Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.
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language | 0..1 | codeBinding | There are no (further) constraints on this element Element idAllergyIntolerance.language Language of the resource content DefinitionThe base language in which the resource is written. Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute). A human language.
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text | 0..1 | Narrative | There are no (further) constraints on this element Element idAllergyIntolerance.text Text summary of the resource, for human interpretation Alternate namesnarrative, html, xhtml, display DefinitionA human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety. Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.
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contained | 0..* | Resource | There are no (further) constraints on this element Element idAllergyIntolerance.contained Contained, inline Resources Alternate namesinline resources, anonymous resources, contained resources DefinitionThese resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope. This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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abatement-datetime | I | 0..1 | Extension | Element idAllergyIntolerance.extension:abatement-datetime Abatement datetime Alternate namesextensions, user content DefinitionThe date or estimated date that the condition resolved or went into remission. 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. http://hl7.org/fhir/uv/ips/StructureDefinition/abatement-dateTime-uv-ips Constraints
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modifierExtension | ?! I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.modifierExtension Extensions that cannot be ignored Alternate namesextensions, user content DefinitionMay be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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 is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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identifier | Σ | 0..* | Identifier | There are no (further) constraints on this element Element idAllergyIntolerance.identifier External ids for this item DefinitionBusiness identifiers assigned to this AllergyIntolerance by the performer or other systems which remain constant as the resource is updated and propagates from server to server. Allows identification of the AllergyIntolerance as it is known by various participating systems and in a way that remains consistent across servers. This is a business identifier, not a resource identifier (see discussion). It is best practice for the identifier to only appear on a single resource instance, however business practices may occasionally dictate that multiple resource instances with the same identifier can exist - possibly even with different resource types. For example, multiple Patient and a Person resource instance might share the same social insurance number.
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clinicalStatus | Σ ?! I | 0..1 | CodeableConceptBinding | There are no (further) constraints on this element Element idAllergyIntolerance.clinicalStatus active | inactive | resolved DefinitionThe clinical status of the allergy or intolerance. Refer to discussion if clincalStatus is missing data. The data type is CodeableConcept because clinicalStatus has some clinical judgment involved, such that there might need to be more specificity than the required FHIR value set allows. For example, a SNOMED coding might allow for additional specificity. The clinical status of the allergy or intolerance.
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verificationStatus | Σ ?! I | 0..1 | CodeableConceptBinding | There are no (further) constraints on this element Element idAllergyIntolerance.verificationStatus unconfirmed | confirmed | refuted | entered-in-error DefinitionAssertion about certainty associated with the propensity, or potential risk, of a reaction to the identified substance (including pharmaceutical product). The data type is CodeableConcept because verificationStatus has some clinical judgment involved, such that there might need to be more specificity than the required FHIR value set allows. For example, a SNOMED coding might allow for additional specificity. Assertion about certainty associated with a propensity, or potential risk, of a reaction to the identified substance.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.verificationStatus.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.verificationStatus.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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coding | Σ | 0..* | Coding | Element idAllergyIntolerance.verificationStatus.coding Code defined by a terminology system DefinitionA reference to a code defined by a terminology system. Allows for alternative encodings within a code system, and translations to other code systems. In the scope of the IPS-UV the entered-in-error concept is not allowed and so the modifier on this element has been removed. While the IPS-UV specification considers this a MS element, some systems will not have a field directly representing verificationStatus; further feedback is required on whether these systems are still expected to be able to demonstrate they can construct this element using additional data from the system when developing the patient summary instance Unordered, Open, by $this(Pattern) Discriminated by value set Constraints
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HL7VerificationStatus | Σ | 0..* | CodingBinding | Element idAllergyIntolerance.verificationStatus.coding:HL7VerificationStatus Required value set for AllergyIntolerance Verification Status. DefinitionCode for an allergy or intolerance statement. Represents whether an allergy/intolerance is active or resolved (indicating no longer active). Allows for alternative encodings within a code system, and translations to other code systems. 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. HL7 required value set for AllergyIntolerance Verification Status.
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StatusCode | Σ | 0..* | CodingBinding | Element idAllergyIntolerance.verificationStatus.coding:StatusCode Code for allergy or intolerance status DefinitionCode for an allergy or intolerance statement. Represents whether an allergy/intolerance is active or resolved (indicating no longer active). Allows for alternative encodings within a code system, and translations to other code systems. 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. Assertion about certainty associated with a propensity, or potential risk, of a reaction to the identified substance.
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text | Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.verificationStatus.text Plain text representation of the concept DefinitionA 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. 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. Very often the text is the same as a displayName of one of the codings.
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type | S Σ | 0..1 | codeBinding | There are no (further) constraints on this element Element idAllergyIntolerance.type allergy | intolerance - Underlying mechanism (if known) Alternate namesCategory, Class DefinitionIdentification of the underlying physiological mechanism for the reaction risk. Allergic (typically immune-mediated) reactions have been traditionally regarded as an indicator for potential escalation to significant future risk. Contemporary knowledge suggests that some reactions previously thought to be immune-mediated are, in fact, non-immune, but in some cases can still pose a life threatening risk. It is acknowledged that many clinicians might not be in a position to distinguish the mechanism of a particular reaction. Often the term "allergy" is used rather generically and may overlap with the use of "intolerance" - in practice the boundaries between these two concepts might not be well-defined or understood. This data element is included nevertheless, because many legacy systems have captured this attribute. Immunologic testing may provide supporting evidence for the basis of the reaction and the causative substance, but no tests are 100% sensitive or specific for sensitivity to a particular substance. If, as is commonly the case, it is unclear whether the reaction is due to an allergy or an intolerance, then the type element should be omitted from the resource. Identification of the underlying physiological mechanism for a Reaction Risk.
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category | Σ | 0..* | codeBinding | There are no (further) constraints on this element Element idAllergyIntolerance.category food | medication | environment | biologic Alternate namesCategory, Type, Reaction Type, Class DefinitionCategory of the identified substance. This data element has been included because it is currently being captured in some clinical systems. This data can be derived from the substance where coding systems are used, and is effectively redundant in that situation. When searching on category, consider the implications of AllergyIntolerance resources without a category. For example, when searching on category = medication, medication allergies that don't have a category valued will not be returned. Refer to search for more information on how to search category with a :missing modifier to get allergies that don't have a category. Additionally, category should be used with caution because category can be subjective based on the sender. Category of an identified substance associated with allergies or intolerances.
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criticality | Σ | 0..1 | codeBinding | Element idAllergyIntolerance.criticality low | high | unable-to-assess Alternate namesSeverity, Seriousness, Contra-indication, Risk DefinitionEstimate of the potential clinical harm, or seriousness, of the reaction to the identified substance. While the IPS-UV specification considers this a MS element, some systems will not have a field directly representing the criticality of an allergy or intolerance, it may be possible for systems to populate the unable-to-assess code, however further feedback is required on whether these systems are expected to be able to demonstrate they can construct criticality when developing the patient summary instance Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance.
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code | S Σ | 1..1 | CodeableConceptPSONBinding | Element idAllergyIntolerance.code Concept - reference to a terminology or just text Alternate namesCode DefinitionA concept that may be defined by a formal reference to a terminology or ontology or may be provided by text. IPS-UV allows the supply of coding, text, or both. Use of the IPS-UV ValueSet is currently marked as preferred, work is underway to determine the pan-Canadian terminology that will be preferred and/or socialized for this element. Until then, only the existing slices are put forward below. They are considered optional, meaning an implementer can still be conformant if they use another subset of codes from SNOMED CT, SNOMED CT CA or another Code System. Codes for allergic condition from the SNOMED CT Canadian edition value set
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.code.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.code.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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coding | S Σ | 0..* | CodingPSON | Element idAllergyIntolerance.code.coding A reference to a code defined by a terminology system DefinitionA reference to a code defined by a terminology system. Allows for alternative encodings within a code system, and translations to other code systems. 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. Unordered, Open, by $this(Pattern) Discriminated by the bound value set Constraints
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codeAllergyCA | S Σ | 0..* | CodingPSONBinding | Element idAllergyIntolerance.code.coding:codeAllergyCA Optional slice for code for allergy or intolerance from the SNOMED CT CA code set DefinitionCode for an allergy or intolerance statement that is selected from the SNOMED CT Canadian edition value set. Allows for alternative encodings within a code system, and translations to other code systems. 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. Codes for allergic condition from the SNOMED CT Canadian edition value set
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absentOrUnknownAllergyIntolerance | S Σ | 0..* | CodingPSONBinding | Element idAllergyIntolerance.code.coding:absentOrUnknownAllergyIntolerance Optional slice for code for absent or unknown allergy or intolerance DefinitionCode for an allergy or intolerance statement (either a positive or a negated/excluded statement). This describes a categorical negated statement (e.g., "No known allergy"). Allows for alternative encodings within a code system, and translations to other code systems. The use of Null values in v3 implementations and SNOMED CT 716186003 (No known allergy) code are common in Canadian implementations - given the semantic equivilance to the codes no-allergy-info and no-known-allergies, Canadian implementers are encouraged to map to the IPS-UV value set (and provide the original source code as an alternate coding) when noting this concept in patient summaries. negation/exclusion codes for reporting no known allergies or not available data.
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text | S Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.code.text Plain text representation of the concept DefinitionA 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. 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. Very often the text is the same as a displayName of one of the codings.
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patient | S Σ I | 1..1 | Reference(PatientPSON) | Element idAllergyIntolerance.patient Who the sensitivity is for Alternate namesPatient DefinitionThe patient who has the allergy or intolerance. References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.patient.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.patient.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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reference | S Σ I | 1..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.patient.reference Literal reference, Relative, internal or absolute URL DefinitionA reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources. Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.
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type | Σ | 0..1 | uriBinding | There are no (further) constraints on this element Element idAllergyIntolerance.patient.type Type the reference refers to (e.g. "Patient") DefinitionThe expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources). This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified. Aa resource (or, for logical models, the URI of the logical model).
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identifier | Σ | 0..1 | Identifier | There are no (further) constraints on this element Element idAllergyIntolerance.patient.identifier Logical reference, when literal reference is not known DefinitionAn identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference. When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).
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display | Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.patient.display Text alternative for the resource DefinitionPlain text narrative that identifies the resource in addition to the resource reference. This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.
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encounter | I | 0..1 | Reference(Encounter) | There are no (further) constraints on this element Element idAllergyIntolerance.encounter Encounter when the allergy or intolerance was asserted DefinitionThe encounter when the allergy or intolerance was asserted. References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
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onset[x] | 0..1 | Element idAllergyIntolerance.onset[x] When allergy or intolerance was identified DefinitionEstimated or actual date, date-time, or age when allergy or intolerance was identified. Unordered, Open, by $this(Type) Constraints
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(All Slices) | There are no (further) constraints on this element | |||
onsetAge | Age | There are no (further) constraints on this element Data type | ||
onsetPeriod | Period | There are no (further) constraints on this element Data type | ||
onsetRange | Range | There are no (further) constraints on this element Data type | ||
onsetString | string | There are no (further) constraints on this element Data type | ||
onsetDateTime | S | 0..1 | dateTime | There are no (further) constraints on this element Element idAllergyIntolerance.onset[x]:onsetDateTime When allergy or intolerance was identified DefinitionEstimated or actual date, date-time, or age when allergy or intolerance was identified.
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recordedDate | 0..1 | dateTime | There are no (further) constraints on this element Element idAllergyIntolerance.recordedDate Date first version of the resource instance was recorded DefinitionThe recordedDate represents when this particular AllergyIntolerance record was created in the system, which is often a system-generated date.
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recorder | I | 0..1 | Reference(Practitioner | PractitionerRole | Patient | RelatedPerson) | There are no (further) constraints on this element Element idAllergyIntolerance.recorder Who recorded the sensitivity Alternate namesAuthor DefinitionIndividual who recorded the record and takes responsibility for its content. References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository. Reference(Practitioner | PractitionerRole | Patient | RelatedPerson) Constraints
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asserter | Σ I | 0..1 | Reference(Patient | RelatedPerson | Practitioner | PractitionerRole) | There are no (further) constraints on this element Element idAllergyIntolerance.asserter Source of the information about the allergy Alternate namesSource, Informant DefinitionThe source of the information about the allergy that is recorded. The recorder takes responsibility for the content, but can reference the source from where they got it. Reference(Patient | RelatedPerson | Practitioner | PractitionerRole) Constraints
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lastOccurrence | 0..1 | dateTime | There are no (further) constraints on this element Element idAllergyIntolerance.lastOccurrence Date(/time) of last known occurrence of a reaction DefinitionRepresents the date and/or time of the last known occurrence of a reaction event. This date may be replicated by one of the Onset of Reaction dates. Where a textual representation of the date of last occurrence is required e.g. 'In Childhood, '10 years ago' the Comment element should be used.
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note | 0..* | Annotation | There are no (further) constraints on this element Element idAllergyIntolerance.note Additional text not captured in other fields DefinitionAdditional narrative about the propensity for the Adverse Reaction, not captured in other fields. For example: including reason for flagging a seriousness of 'High Risk'; and instructions related to future exposure or administration of the substance, such as administration within an Intensive Care Unit or under corticosteroid cover. The notes should be related to an allergy or intolerance as a condition in general and not related to any particular episode of it. For episode notes and descriptions, use AllergyIntolerance.event.description and AllergyIntolerance.event.notes.
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reaction | S | 0..* | BackboneElement | There are no (further) constraints on this element Element idAllergyIntolerance.reaction Adverse Reaction Events linked to exposure to substance DefinitionDetails about each adverse reaction event linked to exposure to the identified substance.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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modifierExtension | Σ ?! I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.modifierExtension Extensions that cannot be ignored even if unrecognized Alternate namesextensions, user content, modifiers DefinitionMay be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. 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.
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substance | 0..1 | CodeableConcept | Element idAllergyIntolerance.reaction.substance Specific substance or pharmaceutical product considered to be responsible for event DefinitionIdentification of the specific substance (or pharmaceutical product) considered to be responsible for the Adverse Reaction event. Note: the substance for a specific reaction may be different from the substance identified as the cause of the risk, but it must be consistent with it. For instance, it may be a more specific substance (e.g. a brand medication) or a composite product that includes the identified substance. It must be clinically safe to only process the 'code' and ignore the 'reaction.substance'. If a receiving system is unable to confirm that AllergyIntolerance.reaction.substance falls within the semantic scope of AllergyIntolerance.code, then the receiving system should ignore AllergyIntolerance.reaction.substance. The IPS-UV does not consider this element MS, however some Canadian systems may capture allergen substances separately from allergyIntolerance.code. Further investigation is required to determine what approaches are in use by participating jurisdictions. Codes defining the type of the substance (including pharmaceutical products).
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manifestation | S | 1..* | CodeableConceptPSONBinding | Element idAllergyIntolerance.reaction.manifestation Concept - reference to a terminology or just text Alternate namesSymptoms, Signs DefinitionA concept that may be defined by a formal reference to a terminology or ontology or may be provided by text. For all CodeableConcepts, at least one of coding or text must be present. If coding contains only a display value (no code) then CodeableConcept must include text. Clinical symptoms and/or signs that are observed or associated with an Adverse Reaction Event.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.manifestation.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.manifestation.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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coding | S Σ | 0..* | CodingPSON | Element idAllergyIntolerance.reaction.manifestation.coding A reference to a code defined by a terminology system DefinitionA reference to a code defined by a terminology system. Allows for alternative encodings within a code system, and translations to other code systems. 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. Unordered, Open, by $this(Pattern) Discriminated by the bound value set Constraints
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manifestationSCTCA | S Σ | 0..* | CodingPSONBinding | Element idAllergyIntolerance.reaction.manifestation.coding:manifestationSCTCA Optional slice for representing code for the allergy or intolerance reaction manifestation from the SNOMED CT Canadian edition value set. DefinitionCode for an allergy or intolerance reaction manifestation statement that is selected from the SNOMED CT Canadian edition value set. Allows for alternative encodings within a code system, and translations to other code systems. 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. https://fhir.infoway-inforoute.ca/ValueSet/clinicalfindingcode (required) Constraints
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text | S Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.manifestation.text Plain text representation of the concept DefinitionA 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. 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. Very often the text is the same as a displayName of one of the codings.
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description | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.description Description of the event as a whole Alternate namesNarrative, Text DefinitionText description about the reaction as a whole, including details of the manifestation if required. Use the description to provide any details of a particular event of the occurred reaction such as circumstances, reaction specifics, what happened before/after. Information, related to the event, but not describing a particular care should be captured in the comment field. For example: at the age of four, the patient was given penicillin for strep throat and subsequently developed severe hives.
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onset | 0..1 | dateTime | Element idAllergyIntolerance.reaction.onset Date(/time) when manifestations showed DefinitionRecord of the date and/or time of the onset of the Reaction. While IPS-UV considers this a MS element, some systems may not capture the onset of the reaction separate from the onset of the allergy. It should be sent if available but further feedback is required on whether these systems are still expected to be able to demonstrate they can construct it for the first release of the PS-ON specification.
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severity | S | 0..1 | codeBinding | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.severity mild | moderate | severe (of event as a whole) DefinitionClinical assessment of the severity of the reaction event as a whole, potentially considering multiple different manifestations. It is acknowledged that this assessment is very subjective. There may be some specific practice domains where objective scales have been applied. Objective scales can be included in this model as extensions. Clinical assessment of the severity of a reaction event as a whole, potentially considering multiple different manifestations.
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exposureRoute | 0..1 | CodeableConcept | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.exposureRoute How the subject was exposed to the substance DefinitionIdentification of the route by which the subject was exposed to the substance. Coding of the route of exposure with a terminology should be used wherever possible. A coded concept describing the route or physiological path of administration of a therapeutic agent into or onto the body of a subject.
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note | 0..* | Annotation | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.note Text about event not captured in other fields DefinitionAdditional text about the adverse reaction event not captured in other fields. Use this field to record information indirectly related to a particular event and not captured in the description. For example: Clinical records are no longer available, recorded based on information provided to the patient by her mother and her mother is deceased.
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Snapshot View
AllergyIntolerancePSON (AllergyIntolerance) | I | AllergyIntolerance | There are no (further) constraints on this element Element idAllergyIntolerance Allergy or Intolerance (generally: Risk of adverse reaction to a substance) Alternate namesAllergy, Intolerance, Adverse Reaction DefinitionRisk of harmful or undesirable, physiological response which is unique to an individual and associated with exposure to a substance. Substances include, but are not limited to: a therapeutic substance administered correctly at an appropriate dosage for the individual; food; material derived from plants or animals; or venom from insect stings.
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id | Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.id Logical id of this artifact DefinitionThe logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes. The only time that a resource does not have an id is when it is being submitted to the server using a create operation. |
meta | S Σ | 1..1 | Meta | There are no (further) constraints on this element Element idAllergyIntolerance.meta Metadata about the resource DefinitionThe metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.meta.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.meta.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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versionId | Σ | 0..1 | id | There are no (further) constraints on this element Element idAllergyIntolerance.meta.versionId Version specific identifier DefinitionThe version specific identifier, as it appears in the version portion of the URL. This value changes when the resource is created, updated, or deleted. The server assigns this value, and ignores what the client specifies, except in the case that the server is imposing version integrity on updates/deletes.
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lastUpdated | Σ | 0..1 | instant | There are no (further) constraints on this element Element idAllergyIntolerance.meta.lastUpdated When the resource version last changed DefinitionWhen the resource last changed - e.g. when the version changed. This value is always populated except when the resource is first being created. The server / resource manager sets this value; what a client provides is irrelevant. This is equivalent to the HTTP Last-Modified and SHOULD have the same value on a read interaction.
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source | Σ | 0..1 | uri | There are no (further) constraints on this element Element idAllergyIntolerance.meta.source Identifies where the resource comes from DefinitionA uri that identifies the source system of the resource. This provides a minimal amount of Provenance information that can be used to track or differentiate the source of information in the resource. The source may identify another FHIR server, document, message, database, etc. In the provenance resource, this corresponds to Provenance.entity.what[x]. The exact use of the source (and the implied Provenance.entity.role) is left to implementer discretion. Only one nominated source is allowed; for additional provenance details, a full Provenance resource should be used. This element can be used to indicate where the current master source of a resource that has a canonical URL if the resource is no longer hosted at the canonical URL.
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profile | S Σ | 1..* | canonical(StructureDefinition) | There are no (further) constraints on this element Element idAllergyIntolerance.meta.profile Profiles this resource claims to conform to DefinitionA list of profiles (references to StructureDefinition resources) that this resource claims to conform to. The URL is a reference to StructureDefinition.url. It is up to the server and/or other infrastructure of policy to determine whether/how these claims are verified and/or updated over time. The list of profile URLs is a set. canonical(StructureDefinition) Constraints
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security | Σ | 0..* | CodingBinding | There are no (further) constraints on this element Element idAllergyIntolerance.meta.security Security Labels applied to this resource DefinitionSecurity labels applied to this resource. These tags connect specific resources to the overall security policy and infrastructure. The security labels can be updated without changing the stated version of the resource. The list of security labels is a set. Uniqueness is based the system/code, and version and display are ignored. Security Labels from the Healthcare Privacy and Security Classification System.
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tag | Σ | 0..* | Coding | There are no (further) constraints on this element Element idAllergyIntolerance.meta.tag Tags applied to this resource DefinitionTags applied to this resource. Tags are intended to be used to identify and relate resources to process and workflow, and applications are not required to consider the tags when interpreting the meaning of a resource. The tags can be updated without changing the stated version of the resource. The list of tags is a set. Uniqueness is based the system/code, and version and display are ignored. Codes that represent various types of tags, commonly workflow-related; e.g. "Needs review by Dr. Jones".
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implicitRules | Σ ?! | 0..1 | uri | There are no (further) constraints on this element Element idAllergyIntolerance.implicitRules A set of rules under which this content was created DefinitionA reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc. Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.
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language | 0..1 | codeBinding | There are no (further) constraints on this element Element idAllergyIntolerance.language Language of the resource content DefinitionThe base language in which the resource is written. Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute). A human language.
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text | 0..1 | Narrative | There are no (further) constraints on this element Element idAllergyIntolerance.text Text summary of the resource, for human interpretation Alternate namesnarrative, html, xhtml, display DefinitionA human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety. Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.
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contained | 0..* | Resource | There are no (further) constraints on this element Element idAllergyIntolerance.contained Contained, inline Resources Alternate namesinline resources, anonymous resources, contained resources DefinitionThese resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope. This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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abatement-datetime | I | 0..1 | Extension | Element idAllergyIntolerance.extension:abatement-datetime Abatement datetime Alternate namesextensions, user content DefinitionThe date or estimated date that the condition resolved or went into remission. 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. http://hl7.org/fhir/uv/ips/StructureDefinition/abatement-dateTime-uv-ips Constraints
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modifierExtension | ?! I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.modifierExtension Extensions that cannot be ignored Alternate namesextensions, user content DefinitionMay be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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 is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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identifier | Σ | 0..* | Identifier | There are no (further) constraints on this element Element idAllergyIntolerance.identifier External ids for this item DefinitionBusiness identifiers assigned to this AllergyIntolerance by the performer or other systems which remain constant as the resource is updated and propagates from server to server. Allows identification of the AllergyIntolerance as it is known by various participating systems and in a way that remains consistent across servers. This is a business identifier, not a resource identifier (see discussion). It is best practice for the identifier to only appear on a single resource instance, however business practices may occasionally dictate that multiple resource instances with the same identifier can exist - possibly even with different resource types. For example, multiple Patient and a Person resource instance might share the same social insurance number.
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clinicalStatus | Σ ?! I | 0..1 | CodeableConceptBinding | There are no (further) constraints on this element Element idAllergyIntolerance.clinicalStatus active | inactive | resolved DefinitionThe clinical status of the allergy or intolerance. Refer to discussion if clincalStatus is missing data. The data type is CodeableConcept because clinicalStatus has some clinical judgment involved, such that there might need to be more specificity than the required FHIR value set allows. For example, a SNOMED coding might allow for additional specificity. The clinical status of the allergy or intolerance.
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verificationStatus | Σ ?! I | 0..1 | CodeableConceptBinding | There are no (further) constraints on this element Element idAllergyIntolerance.verificationStatus unconfirmed | confirmed | refuted | entered-in-error DefinitionAssertion about certainty associated with the propensity, or potential risk, of a reaction to the identified substance (including pharmaceutical product). The data type is CodeableConcept because verificationStatus has some clinical judgment involved, such that there might need to be more specificity than the required FHIR value set allows. For example, a SNOMED coding might allow for additional specificity. Assertion about certainty associated with a propensity, or potential risk, of a reaction to the identified substance.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.verificationStatus.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.verificationStatus.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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coding | Σ | 0..* | Coding | Element idAllergyIntolerance.verificationStatus.coding Code defined by a terminology system DefinitionA reference to a code defined by a terminology system. Allows for alternative encodings within a code system, and translations to other code systems. In the scope of the IPS-UV the entered-in-error concept is not allowed and so the modifier on this element has been removed. While the IPS-UV specification considers this a MS element, some systems will not have a field directly representing verificationStatus; further feedback is required on whether these systems are still expected to be able to demonstrate they can construct this element using additional data from the system when developing the patient summary instance Unordered, Open, by $this(Pattern) Discriminated by value set Constraints
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HL7VerificationStatus | Σ | 0..* | CodingBinding | Element idAllergyIntolerance.verificationStatus.coding:HL7VerificationStatus Required value set for AllergyIntolerance Verification Status. DefinitionCode for an allergy or intolerance statement. Represents whether an allergy/intolerance is active or resolved (indicating no longer active). Allows for alternative encodings within a code system, and translations to other code systems. 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. HL7 required value set for AllergyIntolerance Verification Status.
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StatusCode | Σ | 0..* | CodingBinding | Element idAllergyIntolerance.verificationStatus.coding:StatusCode Code for allergy or intolerance status DefinitionCode for an allergy or intolerance statement. Represents whether an allergy/intolerance is active or resolved (indicating no longer active). Allows for alternative encodings within a code system, and translations to other code systems. 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. Assertion about certainty associated with a propensity, or potential risk, of a reaction to the identified substance.
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text | Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.verificationStatus.text Plain text representation of the concept DefinitionA 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. 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. Very often the text is the same as a displayName of one of the codings.
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type | S Σ | 0..1 | codeBinding | There are no (further) constraints on this element Element idAllergyIntolerance.type allergy | intolerance - Underlying mechanism (if known) Alternate namesCategory, Class DefinitionIdentification of the underlying physiological mechanism for the reaction risk. Allergic (typically immune-mediated) reactions have been traditionally regarded as an indicator for potential escalation to significant future risk. Contemporary knowledge suggests that some reactions previously thought to be immune-mediated are, in fact, non-immune, but in some cases can still pose a life threatening risk. It is acknowledged that many clinicians might not be in a position to distinguish the mechanism of a particular reaction. Often the term "allergy" is used rather generically and may overlap with the use of "intolerance" - in practice the boundaries between these two concepts might not be well-defined or understood. This data element is included nevertheless, because many legacy systems have captured this attribute. Immunologic testing may provide supporting evidence for the basis of the reaction and the causative substance, but no tests are 100% sensitive or specific for sensitivity to a particular substance. If, as is commonly the case, it is unclear whether the reaction is due to an allergy or an intolerance, then the type element should be omitted from the resource. Identification of the underlying physiological mechanism for a Reaction Risk.
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category | Σ | 0..* | codeBinding | There are no (further) constraints on this element Element idAllergyIntolerance.category food | medication | environment | biologic Alternate namesCategory, Type, Reaction Type, Class DefinitionCategory of the identified substance. This data element has been included because it is currently being captured in some clinical systems. This data can be derived from the substance where coding systems are used, and is effectively redundant in that situation. When searching on category, consider the implications of AllergyIntolerance resources without a category. For example, when searching on category = medication, medication allergies that don't have a category valued will not be returned. Refer to search for more information on how to search category with a :missing modifier to get allergies that don't have a category. Additionally, category should be used with caution because category can be subjective based on the sender. Category of an identified substance associated with allergies or intolerances.
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criticality | Σ | 0..1 | codeBinding | Element idAllergyIntolerance.criticality low | high | unable-to-assess Alternate namesSeverity, Seriousness, Contra-indication, Risk DefinitionEstimate of the potential clinical harm, or seriousness, of the reaction to the identified substance. While the IPS-UV specification considers this a MS element, some systems will not have a field directly representing the criticality of an allergy or intolerance, it may be possible for systems to populate the unable-to-assess code, however further feedback is required on whether these systems are expected to be able to demonstrate they can construct criticality when developing the patient summary instance Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance.
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code | S Σ | 1..1 | CodeableConceptPSONBinding | Element idAllergyIntolerance.code Concept - reference to a terminology or just text Alternate namesCode DefinitionA concept that may be defined by a formal reference to a terminology or ontology or may be provided by text. IPS-UV allows the supply of coding, text, or both. Use of the IPS-UV ValueSet is currently marked as preferred, work is underway to determine the pan-Canadian terminology that will be preferred and/or socialized for this element. Until then, only the existing slices are put forward below. They are considered optional, meaning an implementer can still be conformant if they use another subset of codes from SNOMED CT, SNOMED CT CA or another Code System. Codes for allergic condition from the SNOMED CT Canadian edition value set
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.code.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.code.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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coding | S Σ | 0..* | CodingPSON | Element idAllergyIntolerance.code.coding A reference to a code defined by a terminology system DefinitionA reference to a code defined by a terminology system. Allows for alternative encodings within a code system, and translations to other code systems. 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. Unordered, Open, by $this(Pattern) Discriminated by the bound value set Constraints
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codeAllergyCA | S Σ | 0..* | CodingPSONBinding | Element idAllergyIntolerance.code.coding:codeAllergyCA Optional slice for code for allergy or intolerance from the SNOMED CT CA code set DefinitionCode for an allergy or intolerance statement that is selected from the SNOMED CT Canadian edition value set. Allows for alternative encodings within a code system, and translations to other code systems. 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. Codes for allergic condition from the SNOMED CT Canadian edition value set
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absentOrUnknownAllergyIntolerance | S Σ | 0..* | CodingPSONBinding | Element idAllergyIntolerance.code.coding:absentOrUnknownAllergyIntolerance Optional slice for code for absent or unknown allergy or intolerance DefinitionCode for an allergy or intolerance statement (either a positive or a negated/excluded statement). This describes a categorical negated statement (e.g., "No known allergy"). Allows for alternative encodings within a code system, and translations to other code systems. The use of Null values in v3 implementations and SNOMED CT 716186003 (No known allergy) code are common in Canadian implementations - given the semantic equivilance to the codes no-allergy-info and no-known-allergies, Canadian implementers are encouraged to map to the IPS-UV value set (and provide the original source code as an alternate coding) when noting this concept in patient summaries. negation/exclusion codes for reporting no known allergies or not available data.
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text | S Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.code.text Plain text representation of the concept DefinitionA 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. 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. Very often the text is the same as a displayName of one of the codings.
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patient | S Σ I | 1..1 | Reference(PatientPSON) | Element idAllergyIntolerance.patient Who the sensitivity is for Alternate namesPatient DefinitionThe patient who has the allergy or intolerance. References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.patient.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.patient.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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reference | S Σ I | 1..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.patient.reference Literal reference, Relative, internal or absolute URL DefinitionA reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources. Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.
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type | Σ | 0..1 | uriBinding | There are no (further) constraints on this element Element idAllergyIntolerance.patient.type Type the reference refers to (e.g. "Patient") DefinitionThe expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources). This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified. Aa resource (or, for logical models, the URI of the logical model).
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identifier | Σ | 0..1 | Identifier | There are no (further) constraints on this element Element idAllergyIntolerance.patient.identifier Logical reference, when literal reference is not known DefinitionAn identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference. When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).
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display | Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.patient.display Text alternative for the resource DefinitionPlain text narrative that identifies the resource in addition to the resource reference. This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.
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encounter | I | 0..1 | Reference(Encounter) | There are no (further) constraints on this element Element idAllergyIntolerance.encounter Encounter when the allergy or intolerance was asserted DefinitionThe encounter when the allergy or intolerance was asserted. References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
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onset[x] | 0..1 | Element idAllergyIntolerance.onset[x] When allergy or intolerance was identified DefinitionEstimated or actual date, date-time, or age when allergy or intolerance was identified. Unordered, Open, by $this(Type) Constraints
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(All Slices) | There are no (further) constraints on this element | |||
onsetAge | Age | There are no (further) constraints on this element Data type | ||
onsetPeriod | Period | There are no (further) constraints on this element Data type | ||
onsetRange | Range | There are no (further) constraints on this element Data type | ||
onsetString | string | There are no (further) constraints on this element Data type | ||
onsetDateTime | S | 0..1 | dateTime | There are no (further) constraints on this element Element idAllergyIntolerance.onset[x]:onsetDateTime When allergy or intolerance was identified DefinitionEstimated or actual date, date-time, or age when allergy or intolerance was identified.
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recordedDate | 0..1 | dateTime | There are no (further) constraints on this element Element idAllergyIntolerance.recordedDate Date first version of the resource instance was recorded DefinitionThe recordedDate represents when this particular AllergyIntolerance record was created in the system, which is often a system-generated date.
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recorder | I | 0..1 | Reference(Practitioner | PractitionerRole | Patient | RelatedPerson) | There are no (further) constraints on this element Element idAllergyIntolerance.recorder Who recorded the sensitivity Alternate namesAuthor DefinitionIndividual who recorded the record and takes responsibility for its content. References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository. Reference(Practitioner | PractitionerRole | Patient | RelatedPerson) Constraints
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asserter | Σ I | 0..1 | Reference(Patient | RelatedPerson | Practitioner | PractitionerRole) | There are no (further) constraints on this element Element idAllergyIntolerance.asserter Source of the information about the allergy Alternate namesSource, Informant DefinitionThe source of the information about the allergy that is recorded. The recorder takes responsibility for the content, but can reference the source from where they got it. Reference(Patient | RelatedPerson | Practitioner | PractitionerRole) Constraints
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lastOccurrence | 0..1 | dateTime | There are no (further) constraints on this element Element idAllergyIntolerance.lastOccurrence Date(/time) of last known occurrence of a reaction DefinitionRepresents the date and/or time of the last known occurrence of a reaction event. This date may be replicated by one of the Onset of Reaction dates. Where a textual representation of the date of last occurrence is required e.g. 'In Childhood, '10 years ago' the Comment element should be used.
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note | 0..* | Annotation | There are no (further) constraints on this element Element idAllergyIntolerance.note Additional text not captured in other fields DefinitionAdditional narrative about the propensity for the Adverse Reaction, not captured in other fields. For example: including reason for flagging a seriousness of 'High Risk'; and instructions related to future exposure or administration of the substance, such as administration within an Intensive Care Unit or under corticosteroid cover. The notes should be related to an allergy or intolerance as a condition in general and not related to any particular episode of it. For episode notes and descriptions, use AllergyIntolerance.event.description and AllergyIntolerance.event.notes.
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reaction | S | 0..* | BackboneElement | There are no (further) constraints on this element Element idAllergyIntolerance.reaction Adverse Reaction Events linked to exposure to substance DefinitionDetails about each adverse reaction event linked to exposure to the identified substance.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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modifierExtension | Σ ?! I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.modifierExtension Extensions that cannot be ignored even if unrecognized Alternate namesextensions, user content, modifiers DefinitionMay be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. 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.
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substance | 0..1 | CodeableConcept | Element idAllergyIntolerance.reaction.substance Specific substance or pharmaceutical product considered to be responsible for event DefinitionIdentification of the specific substance (or pharmaceutical product) considered to be responsible for the Adverse Reaction event. Note: the substance for a specific reaction may be different from the substance identified as the cause of the risk, but it must be consistent with it. For instance, it may be a more specific substance (e.g. a brand medication) or a composite product that includes the identified substance. It must be clinically safe to only process the 'code' and ignore the 'reaction.substance'. If a receiving system is unable to confirm that AllergyIntolerance.reaction.substance falls within the semantic scope of AllergyIntolerance.code, then the receiving system should ignore AllergyIntolerance.reaction.substance. The IPS-UV does not consider this element MS, however some Canadian systems may capture allergen substances separately from allergyIntolerance.code. Further investigation is required to determine what approaches are in use by participating jurisdictions. Codes defining the type of the substance (including pharmaceutical products).
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manifestation | S | 1..* | CodeableConceptPSONBinding | Element idAllergyIntolerance.reaction.manifestation Concept - reference to a terminology or just text Alternate namesSymptoms, Signs DefinitionA concept that may be defined by a formal reference to a terminology or ontology or may be provided by text. For all CodeableConcepts, at least one of coding or text must be present. If coding contains only a display value (no code) then CodeableConcept must include text. Clinical symptoms and/or signs that are observed or associated with an Adverse Reaction Event.
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id | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.manifestation.id Unique id for inter-element referencing DefinitionUnique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
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extension | I | 0..* | Extension | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.manifestation.extension Additional content defined by implementations Alternate namesextensions, user content DefinitionMay 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. 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. Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints
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coding | S Σ | 0..* | CodingPSON | Element idAllergyIntolerance.reaction.manifestation.coding A reference to a code defined by a terminology system DefinitionA reference to a code defined by a terminology system. Allows for alternative encodings within a code system, and translations to other code systems. 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. Unordered, Open, by $this(Pattern) Discriminated by the bound value set Constraints
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manifestationSCTCA | S Σ | 0..* | CodingPSONBinding | Element idAllergyIntolerance.reaction.manifestation.coding:manifestationSCTCA Optional slice for representing code for the allergy or intolerance reaction manifestation from the SNOMED CT Canadian edition value set. DefinitionCode for an allergy or intolerance reaction manifestation statement that is selected from the SNOMED CT Canadian edition value set. Allows for alternative encodings within a code system, and translations to other code systems. 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. https://fhir.infoway-inforoute.ca/ValueSet/clinicalfindingcode (required) Constraints
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text | S Σ | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.manifestation.text Plain text representation of the concept DefinitionA 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. 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. Very often the text is the same as a displayName of one of the codings.
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description | 0..1 | string | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.description Description of the event as a whole Alternate namesNarrative, Text DefinitionText description about the reaction as a whole, including details of the manifestation if required. Use the description to provide any details of a particular event of the occurred reaction such as circumstances, reaction specifics, what happened before/after. Information, related to the event, but not describing a particular care should be captured in the comment field. For example: at the age of four, the patient was given penicillin for strep throat and subsequently developed severe hives.
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onset | 0..1 | dateTime | Element idAllergyIntolerance.reaction.onset Date(/time) when manifestations showed DefinitionRecord of the date and/or time of the onset of the Reaction. While IPS-UV considers this a MS element, some systems may not capture the onset of the reaction separate from the onset of the allergy. It should be sent if available but further feedback is required on whether these systems are still expected to be able to demonstrate they can construct it for the first release of the PS-ON specification.
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severity | S | 0..1 | codeBinding | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.severity mild | moderate | severe (of event as a whole) DefinitionClinical assessment of the severity of the reaction event as a whole, potentially considering multiple different manifestations. It is acknowledged that this assessment is very subjective. There may be some specific practice domains where objective scales have been applied. Objective scales can be included in this model as extensions. Clinical assessment of the severity of a reaction event as a whole, potentially considering multiple different manifestations.
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exposureRoute | 0..1 | CodeableConcept | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.exposureRoute How the subject was exposed to the substance DefinitionIdentification of the route by which the subject was exposed to the substance. Coding of the route of exposure with a terminology should be used wherever possible. A coded concept describing the route or physiological path of administration of a therapeutic agent into or onto the body of a subject.
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note | 0..* | Annotation | There are no (further) constraints on this element Element idAllergyIntolerance.reaction.note Text about event not captured in other fields DefinitionAdditional text about the adverse reaction event not captured in other fields. Use this field to record information indirectly related to a particular event and not captured in the description. For example: Clinical records are no longer available, recorded based on information provided to the patient by her mother and her mother is deceased.
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Table View
AllergyIntolerance | .. | |
AllergyIntolerance.meta | 1.. | |
AllergyIntolerance.meta.profile | 1.. | |
AllergyIntolerance.extension | Extension | ..1 |
AllergyIntolerance.verificationStatus | .. | |
AllergyIntolerance.verificationStatus.coding | .. | |
AllergyIntolerance.verificationStatus.coding | .. | |
AllergyIntolerance.verificationStatus.coding | .. | |
AllergyIntolerance.type | .. | |
AllergyIntolerance.criticality | .. | |
AllergyIntolerance.code | CodeableConceptPSON | 1..1 |
AllergyIntolerance.code.coding | CodingPSON | .. |
AllergyIntolerance.code.coding | .. | |
AllergyIntolerance.code.coding | .. | |
AllergyIntolerance.patient | Reference(PatientPSON) | .. |
AllergyIntolerance.patient.reference | 1.. | |
AllergyIntolerance.onset[x] | .. | |
AllergyIntolerance.onsetDateTime | .. | |
AllergyIntolerance.reaction | .. | |
AllergyIntolerance.reaction.substance | .. | |
AllergyIntolerance.reaction.manifestation | CodeableConceptPSON | 1.. |
AllergyIntolerance.reaction.manifestation.coding | CodingPSON | .. |
AllergyIntolerance.reaction.manifestation.coding | .. | |
AllergyIntolerance.reaction.onset | .. | |
AllergyIntolerance.reaction.severity | .. |
JSON View
{ "resourceType": "StructureDefinition", "id": "ca-on-ps-profile-allergyintolerance", "url": "http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-allergyintolerance", "version": "0.10.0", "name": "AllergyIntolerancePSON", "title": "Allergy Intolerance (PS-ON)", "status": "draft", "date": "2024-02-01T19:39:15.322061+00:00", "publisher": "Ontario Health", "description": "This profile defines a set of constraints to the FHIR AllergyIntolerance resource for use in Ontario Patient Summaries (PS-ON). It refines constraints applied to the AllergyIntollerance resource by the PS-CA project, which is informed by the constraints of the [AllergyIntolerance-UV-IPS profile](http://hl7.org/fhir/uv/ips/StructureDefinition-AllergyIntolerance-uv-ips.html) and the [Canadian Baseline Profile](http://build.fhir.org/ig/HL7-Canada/ca-baseline/branches/master/StructureDefinition-profile-allergyintolerance.html) to allow for cross-border and cross-jurisdiction sharing of Allergies and Intolerances. It documents the relevant allergies or intolerances (conditions) for a patient, describing the kind of reaction (e.g. rash, anaphylaxis,..); preferably the agents that cause it; and optionally the criticality and the certainty of the allergy.", "fhirVersion": "4.0.1", "kind": "resource", "abstract": false, "type": "AllergyIntolerance", "baseDefinition": "http://hl7.org/fhir/StructureDefinition/AllergyIntolerance", "derivation": "constraint", "differential": { "element": [ { "id": "AllergyIntolerance.meta", "path": "AllergyIntolerance.meta", "min": 1, "mustSupport": true }, { "id": "AllergyIntolerance.meta.profile", "path": "AllergyIntolerance.meta.profile", "min": 1, "mustSupport": true }, { "id": "AllergyIntolerance.extension:abatement-datetime", "path": "AllergyIntolerance.extension", "sliceName": "abatement-datetime", "short": "Abatement datetime", "definition": "The date or estimated date that the condition resolved or went into remission.", "max": "1", "type": [ { "code": "Extension", "profile": [ "http://hl7.org/fhir/uv/ips/StructureDefinition/abatement-dateTime-uv-ips" ] } ] }, { "id": "AllergyIntolerance.verificationStatus.coding", "path": "AllergyIntolerance.verificationStatus.coding", "slicing": { "discriminator": [ { "type": "pattern", "path": "$this" } ], "description": "Discriminated by value set", "rules": "open" }, "comment": "In the scope of the IPS-UV the entered-in-error concept is not allowed and so the modifier on this element has been removed. While the IPS-UV specification considers this a MS element, some systems will not have a field directly representing verificationStatus; further feedback is required on whether these systems are still expected to be able to demonstrate they can construct this element using additional data from the system when developing the patient summary instance", "mustSupport": false }, { "id": "AllergyIntolerance.verificationStatus.coding:HL7VerificationStatus", "path": "AllergyIntolerance.verificationStatus.coding", "sliceName": "HL7VerificationStatus", "short": "Required value set for AllergyIntolerance Verification Status.", "definition": "Code for an allergy or intolerance statement. Represents whether an allergy/intolerance is active or resolved (indicating no longer active).", "binding": { "strength": "required", "description": "HL7 required value set for AllergyIntolerance Verification Status.", "valueSet": "http://hl7.org/fhir/ValueSet/allergyintolerance-verification|4.0.1" } }, { "id": "AllergyIntolerance.verificationStatus.coding:StatusCode", "path": "AllergyIntolerance.verificationStatus.coding", "sliceName": "StatusCode", "short": "Code for allergy or intolerance status", "definition": "Code for an allergy or intolerance statement. Represents whether an allergy/intolerance is active or resolved (indicating no longer active).", "binding": { "strength": "required", "description": "Assertion about certainty associated with a propensity, or potential risk, of a reaction to the identified substance.", "valueSet": "https://fhir.infoway-inforoute.ca/ValueSet/allergyintolerancestatuscode" } }, { "id": "AllergyIntolerance.type", "path": "AllergyIntolerance.type", "mustSupport": true }, { "id": "AllergyIntolerance.criticality", "path": "AllergyIntolerance.criticality", "comment": "While the IPS-UV specification considers this a MS element, some systems will not have a field directly representing the criticality of an allergy or intolerance, it may be possible for systems to populate the unable-to-assess code, however further feedback is required on whether these systems are expected to be able to demonstrate they can construct criticality when developing the patient summary instance", "mustSupport": false }, { "id": "AllergyIntolerance.code", "path": "AllergyIntolerance.code", "short": "Concept - reference to a terminology or just text", "comment": "IPS-UV allows the supply of coding, text, or both. Use of the IPS-UV ValueSet is currently marked as preferred, work is underway to determine the pan-Canadian terminology that will be preferred and/or socialized for this element. Until then, only the existing slices are put forward below. They are considered optional, meaning an implementer can still be conformant if they use another subset of codes from SNOMED CT, SNOMED CT CA or another Code System.", "min": 1, "max": "1", "type": [ { "code": "CodeableConcept", "profile": [ "http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-codeableconcept" ] } ], "mustSupport": true, "binding": { "extension": [ { "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName", "valueString": "AllergyIntoleranceCode" } ], "strength": "preferred", "description": "Codes for allergic condition from the SNOMED CT Canadian edition value set", "valueSet": "http://fhir.infoway-inforoute.ca/io/psca/ValueSet/substanceandpharmaceuticalbiologicproductcode" } }, { "id": "AllergyIntolerance.code.coding", "path": "AllergyIntolerance.code.coding", "slicing": { "discriminator": [ { "type": "pattern", "path": "$this" } ], "description": "Discriminated by the bound value set", "rules": "open" }, "type": [ { "code": "Coding", "profile": [ "http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-coding" ] } ], "mustSupport": true }, { "id": "AllergyIntolerance.code.coding:codeAllergyCA", "path": "AllergyIntolerance.code.coding", "sliceName": "codeAllergyCA", "short": "Optional slice for code for allergy or intolerance from the SNOMED CT CA code set", "definition": "Code for an allergy or intolerance statement that is selected from the SNOMED CT Canadian edition value set.", "mustSupport": true, "binding": { "extension": [ { "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName", "valueString": "codeAllergyCA" } ], "strength": "required", "description": "Codes for allergic condition from the SNOMED CT Canadian edition value set", "valueSet": "http://fhir.infoway-inforoute.ca/io/psca/ValueSet/substanceandpharmaceuticalbiologicproductcode" } }, { "id": "AllergyIntolerance.code.coding:absentOrUnknownAllergyIntolerance", "path": "AllergyIntolerance.code.coding", "sliceName": "absentOrUnknownAllergyIntolerance", "short": "Optional slice for code for absent or unknown allergy or intolerance", "definition": "Code for an allergy or intolerance statement (either a positive or a negated/excluded statement). This describes a categorical negated statement (e.g., \"No known allergy\").", "comment": "The use of Null values in v3 implementations and SNOMED CT 716186003 (No known allergy) code are common in Canadian implementations - given the semantic equivilance to the codes no-allergy-info and no-known-allergies, Canadian implementers are encouraged to map to the IPS-UV value set (and provide the original source code as an alternate coding) when noting this concept in patient summaries.", "mustSupport": true, "binding": { "extension": [ { "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName", "valueString": "absentOrUnknownAllergy" } ], "strength": "required", "description": "negation/exclusion codes for reporting no known allergies or not available data.", "valueSet": "http://hl7.org/fhir/uv/ips/ValueSet/absent-or-unknown-allergies-uv-ips" } }, { "id": "AllergyIntolerance.patient", "path": "AllergyIntolerance.patient", "type": [ { "code": "Reference", "targetProfile": [ "http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-patient" ] } ], "mustSupport": true }, { "id": "AllergyIntolerance.patient.reference", "path": "AllergyIntolerance.patient.reference", "min": 1, "mustSupport": true }, { "id": "AllergyIntolerance.onset[x]", "path": "AllergyIntolerance.onset[x]", "slicing": { "discriminator": [ { "type": "type", "path": "$this" } ], "ordered": false, "rules": "open" } }, { "id": "AllergyIntolerance.onsetDateTime", "path": "AllergyIntolerance.onsetDateTime", "mustSupport": true }, { "id": "AllergyIntolerance.reaction", "path": "AllergyIntolerance.reaction", "mustSupport": true }, { "id": "AllergyIntolerance.reaction.substance", "path": "AllergyIntolerance.reaction.substance", "comment": "The IPS-UV does not consider this element MS, however some Canadian systems may capture allergen substances separately from allergyIntolerance.code. Further investigation is required to determine what approaches are in use by participating jurisdictions." }, { "id": "AllergyIntolerance.reaction.manifestation", "path": "AllergyIntolerance.reaction.manifestation", "min": 1, "type": [ { "code": "CodeableConcept", "profile": [ "http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-codeableconcept" ] } ], "mustSupport": true, "binding": { "extension": [ { "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName", "valueString": "manifestationSCTCA" } ], "strength": "preferred", "valueSet": "https://fhir.infoway-inforoute.ca/ValueSet/clinicalfindingcode" } }, { "id": "AllergyIntolerance.reaction.manifestation.coding", "path": "AllergyIntolerance.reaction.manifestation.coding", "slicing": { "discriminator": [ { "type": "pattern", "path": "$this" } ], "description": "Discriminated by the bound value set", "rules": "open" }, "type": [ { "code": "Coding", "profile": [ "http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-coding" ] } ], "mustSupport": true }, { "id": "AllergyIntolerance.reaction.manifestation.coding:manifestationSCTCA", "path": "AllergyIntolerance.reaction.manifestation.coding", "sliceName": "manifestationSCTCA", "short": "Optional slice for representing code for the allergy or intolerance reaction manifestation from the SNOMED CT Canadian edition value set.", "definition": "Code for an allergy or intolerance reaction manifestation statement that is selected from the SNOMED CT Canadian edition value set.", "mustSupport": true, "binding": { "extension": [ { "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName", "valueString": "manifestationSCTCA" } ], "strength": "required", "valueSet": "https://fhir.infoway-inforoute.ca/ValueSet/clinicalfindingcode" } }, { "id": "AllergyIntolerance.reaction.onset", "path": "AllergyIntolerance.reaction.onset", "comment": "While IPS-UV considers this a MS element, some systems may not capture the onset of the reaction separate from the onset of the allergy. It should be sent if available but further feedback is required on whether these systems are still expected to be able to demonstrate they can construct it for the first release of the PS-ON specification." }, { "id": "AllergyIntolerance.reaction.severity", "path": "AllergyIntolerance.reaction.severity", "mustSupport": true } ] } }
Usage
The AllergyIntolerance Resource is used to populate entries in the Allergies and Intolerances section of a Patient Summary.
Notes
.id
- Definition: Logical id of this artifact
- used to uniquely identify the resource
- if a persistent identity for the resource is not available to use when constructing the composition Bundle, a UUID SHOULD be used in this element (with a corresponding value in
Bundle.entry.fullUrl
) - Where
.id
is populated with a persistent identifier, consumers SHALL NOT expect to be able to resolve the resource and SHALL always use the version of the resource contained in the Bundle to render the composition.
.meta.profile
- used to declare conformance to this profile
- populate with a fixed value:
http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ps-profile-allergyintolerance|0.9.1
.meta.versionId
- SHALL be populated by the Patient Summary Repository server
- consuming systems can expect this element to be populated when retrieving patient summary instances from the repository
- source systems do not need to populate this element prior to submission
.extension abatement-datetime
- Note that while the MS flag is relaxed in the differential, it still shows in the renderer until the extension modeling is further corrected by IPS
.clinicalStatus
- mustSupport element in international patient summary
.verificationStatus
- SHOULD be used to convey the level of certainty about the allergy or intolerance in the entry where data is available
- if not available in the generating system, set to "unconfirmed"
- mustSupport element in international patient summary
.type
- SHOULD be used to convey whether the entry is an allergy or an intolerance
- mustSupport element in international patient summary
.criticality
- SHOULD be used to convey the criticality of the allergy or intolerance (i.e. the seriousness)
- mustSupport element in international patient summary
.code
- SHALL be used to either:
- identify the agent that causes the allergy or intolerance conveyed in the entry, or
- to explicitly state that the patient has no known or unknown allergies when the allergy section in the patient summary does not contain an allergy or intolerance
- in situations where an allergy or intolerance is present:
- a description of the agent SHALL be provided in
.text
for display - a coded value SHOULD also be provided in
.coding
- a description of the agent SHALL be provided in
- in situations where an allergy or intolerance is not present, this SHALL be conveyed using
.coding
from the prescribed valueSet (absent-or-unknown-allergies-uv-ips)- in situations where the EMR cannot distinguish between no-known and no information about patient allergies, then the code for no information should be used. In the instance where a patient is KNOWN to have no allergies, the no-known code should be used.
- the "codeAllergyCA" slice provides the preferred choice of terminology for this element in Ontario
- mustSupport element in international patient summary
.patient
- SHALL provide a
.reference
to the samePatient
resource identified inComposition.subject
- mustSupport element in international patient summary
.reaction.manifestation
- used to convey the kind of reaction (e.g. rash, anaphylaxis, etc.)
- the "manifestationSCTCA" slice provides the preferred choice of terminology for this element in Ontario
- mustSupport element in international patient summary