DK MedCom Core
4.0.0 - release DK

This page is part of the DK MedCom Core (v4.0.0: Release) based on FHIR (HL7® FHIR® Standard) R4. This is the current published version. For a full list of available versions, see the Directory of published versions

Extension: MedComCoreContactExtension - Detailed Descriptions

Active as of 2026-01-13

Definitions for the medcom-core-contact-extension extension.

Guidance on how to interpret the contents of this table can be foundhere

0. Extension
Definition

Extension that contains the contact information


Optional Extension Element - found in all resources.

ShortContactExtensionOptional Extensions Element
Control0..*
This element is affected by the following invariants: ele-1
Is Modifierfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
2. Extension.extension
Definition

An Extension


May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

ShortExtensionAdditional content defined by implementations
Comments

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.

Control0..0*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
SlicingThis element introduces a set of slices on Extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 4. Extension.url
    Definition

    Source of the definition for the extension code - a logical name or a URL.

    Shortidentifies the meaning of the extension
    Comments

    The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

    Control1..1
    Typeuri
    Is Modifierfalse
    XML FormatIn the XML format, this property is represented as an attribute.
    Summaryfalse
    Fixed Valuehttp://medcomfhir.dk/ig/core/StructureDefinition/medcom-core-contact-extension
    6. Extension.value[x]
    Definition

    Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

    ShortValue of extension
    Control10..1
    TypeContactPoint, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
    Is Modifierfalse
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    SlicingThis element introduces a set of slices on Extension.value[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
    • type @ $this
    • 8. Extension.value[x]:valueContactPoint
      Slice NamevalueContactPoint
      Definition

      Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

      ShortValue of extension
      Control10..1
      TypeContactPoint, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      Is Modifierfalse
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      10. Extension.value[x]:valueContactPoint.system
      Definition

      Telecommunications form for contact point - what communications system is required to make use of the contact.

      Shortphone | fax | email | pager | url | sms | other
      Control0..1
      This element is affected by the following invariants: cpt-2
      BindingThe codes SHALL be taken from ContactPointSystemhttp://hl7.org/fhir/ValueSet/contact-point-system|4.0.1
      (required to http://hl7.org/fhir/ValueSet/contact-point-system|4.0.1)

      Telecommunications form for contact point.

      Typecode
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Must Supporttrue
      Obligations
        ObligationsActor
        SHALL:in-narrativeProducer of FHIR resources
        Summarytrue
        Pattern Valuephone
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        12. Extension.value[x]:valueContactPoint.value
        Definition

        The actual contact point details, in a form that is meaningful to the designated communication system (i.e. phone number or email address).

        ShortShall contain a relevant telephone number.The actual contact point details
        Comments

        Additional text data such as phone extension numbers, or notes about use of the contact are sometimes included in the value.

        Control10..1
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Obligations
          ObligationsActor
          SHALL:in-narrativeProducer of FHIR resources
          Summarytrue
          Requirements

          Need to support legacy numbers that are not in a tightly controlled format.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          medcom-core-contact: The telephone number may include + and numbers from 0-9 (matches('[+]?[-0-9]'))
          14. Extension.value[x]:valueContactPoint.use
          Definition

          Identifies the purpose for the contact point.

          Shorthome | work | temp | old | mobile - purpose of this contact point
          Comments

          Applications can assume that a contact is current unless it explicitly says that it is temporary or old.

          Control0..1
          BindingThe codes SHALL be taken from ContactPointUsehttp://hl7.org/fhir/ValueSet/contact-point-use|4.0.1
          (required to http://hl7.org/fhir/ValueSet/contact-point-use|4.0.1)

          Use of contact point.

          Typecode
          Is Modifiertrue because This is labeled as "Is Modifier" because applications should not mistake a temporary or old contact etc.for a current/permanent one
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Obligations
            ObligationsActor
            SHALL:in-narrativeProducer of FHIR resources
            Summarytrue
            Requirements

            Need to track the way a person uses this contact, so a user can choose which is appropriate for their purpose.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

            Guidance on how to interpret the contents of this table can be foundhere

            0. Extension
            Definition

            Extension that contains the contact information

            ShortContactExtension
            2. Extension.extension
            Control0..0
            4. Extension.url
            Fixed Valuehttp://medcomfhir.dk/ig/core/StructureDefinition/medcom-core-contact-extension
            6. Extension.value[x]
            Control1..?
            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
            SlicingThis element introduces a set of slices on Extension.value[x]. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • type @ $this
            • 8. Extension.value[x]:valueContactPoint
              Slice NamevalueContactPoint
              Control1..1
              TypeContactPoint
              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
              10. Extension.value[x]:valueContactPoint.system
              Must Supporttrue
              Obligations
                ObligationsActor
                SHALL:in-narrativeProducer of FHIR resources
                Pattern Valuephone
                12. Extension.value[x]:valueContactPoint.value
                ShortShall contain a relevant telephone number.
                Control1..?
                Must Supporttrue
                Obligations
                  ObligationsActor
                  SHALL:in-narrativeProducer of FHIR resources
                  Invariantsmedcom-core-contact: The telephone number may include + and numbers from 0-9 (matches('[+]?[-0-9]'))
                  14. Extension.value[x]:valueContactPoint.use
                  Obligations
                    ObligationsActor
                    SHALL:in-narrativeProducer of FHIR resources

                    Guidance on how to interpret the contents of this table can be foundhere

                    0. Extension
                    Definition

                    Extension that contains the contact information

                    ShortContactExtension
                    Control0..*
                    This element is affected by the following invariants: ele-1
                    Is Modifierfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    2. Extension.id
                    Definition

                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                    ShortUnique id for inter-element referencing
                    Control0..1
                    Typestring
                    Is Modifierfalse
                    XML FormatIn the XML format, this property is represented as an attribute.
                    Summaryfalse
                    4. Extension.extension
                    Definition

                    An Extension

                    ShortExtension
                    Control0..0
                    TypeExtension
                    Is Modifierfalse
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    SlicingThis element introduces a set of slices on Extension.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                    • value @ url
                    • 6. Extension.url
                      Definition

                      Source of the definition for the extension code - a logical name or a URL.

                      Shortidentifies the meaning of the extension
                      Comments

                      The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

                      Control1..1
                      Typeuri
                      Is Modifierfalse
                      XML FormatIn the XML format, this property is represented as an attribute.
                      Summaryfalse
                      Fixed Valuehttp://medcomfhir.dk/ig/core/StructureDefinition/medcom-core-contact-extension
                      8. Extension.value[x]
                      Definition

                      Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

                      ShortValue of extension
                      Control1..1
                      TypeContactPoint
                      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      SlicingThis element introduces a set of slices on Extension.value[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
                      • type @ $this
                      • 10. Extension.value[x]:valueContactPoint
                        Slice NamevalueContactPoint
                        Definition

                        Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

                        ShortValue of extension
                        Control1..1
                        TypeContactPoint
                        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                        Is Modifierfalse
                        Summaryfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        12. Extension.value[x]:valueContactPoint.id
                        Definition

                        Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                        ShortUnique id for inter-element referencing
                        Control0..1
                        Typestring
                        Is Modifierfalse
                        XML FormatIn the XML format, this property is represented as an attribute.
                        Summaryfalse
                        14. Extension.value[x]:valueContactPoint.extension
                        Definition

                        May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                        ShortAdditional content defined by implementations
                        Comments

                        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.

                        Control0..*
                        TypeExtension
                        Is Modifierfalse
                        Summaryfalse
                        Alternate Namesextensions, user content
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        SlicingThis element introduces a set of slices on Extension.value[x].extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                        • value @ url
                        • 16. Extension.value[x]:valueContactPoint.system
                          Definition

                          Telecommunications form for contact point - what communications system is required to make use of the contact.

                          Shortphone | fax | email | pager | url | sms | other
                          Control0..1
                          This element is affected by the following invariants: cpt-2
                          BindingThe codes SHALL be taken from ContactPointSystem
                          (required to http://hl7.org/fhir/ValueSet/contact-point-system|4.0.1)

                          Telecommunications form for contact point.

                          Typecode
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Must Supporttrue
                          Obligations
                            ObligationsActor
                            SHALL:in-narrativeProducer of FHIR resources
                            Summarytrue
                            Pattern Valuephone
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            18. Extension.value[x]:valueContactPoint.value
                            Definition

                            The actual contact point details, in a form that is meaningful to the designated communication system (i.e. phone number or email address).

                            ShortShall contain a relevant telephone number.
                            Comments

                            Additional text data such as phone extension numbers, or notes about use of the contact are sometimes included in the value.

                            Control1..1
                            Typestring
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Must Supporttrue
                            Obligations
                              ObligationsActor
                              SHALL:in-narrativeProducer of FHIR resources
                              Summarytrue
                              Requirements

                              Need to support legacy numbers that are not in a tightly controlled format.

                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              medcom-core-contact: The telephone number may include + and numbers from 0-9 (matches('[+]?[-0-9]'))
                              20. Extension.value[x]:valueContactPoint.use
                              Definition

                              Identifies the purpose for the contact point.

                              Shorthome | work | temp | old | mobile - purpose of this contact point
                              Comments

                              Applications can assume that a contact is current unless it explicitly says that it is temporary or old.

                              Control0..1
                              BindingThe codes SHALL be taken from ContactPointUse
                              (required to http://hl7.org/fhir/ValueSet/contact-point-use|4.0.1)

                              Use of contact point.

                              Typecode
                              Is Modifiertrue because This is labeled as "Is Modifier" because applications should not mistake a temporary or old contact etc.for a current/permanent one
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Obligations
                                ObligationsActor
                                SHALL:in-narrativeProducer of FHIR resources
                                Summarytrue
                                Requirements

                                Need to track the way a person uses this contact, so a user can choose which is appropriate for their purpose.

                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                22. Extension.value[x]:valueContactPoint.rank
                                Definition

                                Specifies a preferred order in which to use a set of contacts. ContactPoints with lower rank values are more preferred than those with higher rank values.

                                ShortSpecify preferred order of use (1 = highest)
                                Comments

                                Note that rank does not necessarily follow the order in which the contacts are represented in the instance.

                                Control0..1
                                TypepositiveInt
                                Is Modifierfalse
                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                Summarytrue
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                24. Extension.value[x]:valueContactPoint.period
                                Definition

                                Time period when the contact point was/is in use.

                                ShortTime period when the contact point was/is in use
                                Control0..1
                                TypePeriod
                                Is Modifierfalse
                                Summarytrue
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))