CH Core (R4)
6.0.0-ci-build - ci-build Switzerland flag

CH Core (R4), published by HL7 Switzerland. This guide is not an authorized publication; it is the continuous build for version 6.0.0-ci-build built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7ch/ch-core/ and changes regularly. See the Directory of published versions

Resource Profile: CHCoreRelatedPerson - Detailed Descriptions

Active as of 2025-11-26

Definitions for the ch-core-relatedperson resource profile.

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

0. RelatedPerson
Definition

Information about a person that is involved in the care for a patient, but who is not the target of healthcare, nor has a formal responsibility in the care process.

ShortCH Core RelatedPersonA person that is related to a patient, but who is not a direct target of care
Control0..*
Is Modifierfalse
Summaryfalse
Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
2. RelatedPerson.implicitRules
Definition

A 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.

ShortA set of rules under which this content was created
Comments

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.

Control0..1
Typeuri
Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
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()))
4. RelatedPerson.extension
Definition

An Extension


May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and 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..*
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 RelatedPerson.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 6. RelatedPerson.extension:citizenship
    Slice Namecitizenship
    Definition

    The patient's legal status as citizen of a country.

    ShortCitizenship(s) of related person
    Control0..*
    This element is affected by the following invariants: ele-1
    TypeExtension(Patient Citizenship) (Complex Extension)
    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())
    8. RelatedPerson.modifierExtension
    Definition

    May 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).

    ShortExtensions that cannot be ignored
    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 Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
    Summaryfalse
    Requirements

    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.

    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())
    10. RelatedPerson.active
    Definition

    Whether this related person record is in active use.

    ShortWhether this related person's record is in active use
    Comments

    This element is labeled as a modifier because it may be used to mark that the resource was created in error.

    Control0..1
    Typeboolean
    Is Modifiertrue because This element is labelled as a modifier because it is a status element that can indicate that a record should not be treated as valid
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Summarytrue
    Requirements

    Need to be able to mark a related person record as not to be used, such as if it was created in error.

    Meaning if MissingThis resource is generally assumed to be active if no value is provided for the active element
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    12. RelatedPerson.patient
    Definition

    The patient this person is related to.

    ShortThe patient this person is related to
    Control1..1
    TypeReference(CH Core Patient, Patient)
    Is Modifierfalse
    Summarytrue
    Requirements

    We need to know which patient this RelatedPerson is related to.

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

    A name associated with the person.

    ShortA name associated with the person
    Control0..*
    TypeHumanName(Human Name)
    Is Modifierfalse
    Summarytrue
    Requirements

    Related persons need to be identified by name, but it is uncommon to need details about multiple other names for that person.

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

    A contact detail for the person, e.g. a telephone number or an email address.

    ShortA contact detail for the person
    Comments

    Person may have multiple ways to be contacted with different uses or applicable periods. May need to have options for contacting the person urgently, and also to help with identification.

    Control0..*
    TypeContactPoint
    Is Modifierfalse
    Summarytrue
    Requirements

    People have (primary) ways to contact them in some way such as phone, email.

    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 RelatedPerson.telecom. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • value @ system
    • 18. RelatedPerson.telecom.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
      Control10..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
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      20. RelatedPerson.telecom.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).

      ShortThe 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
      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()))
      22. RelatedPerson.telecom.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
      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()))
      24. RelatedPerson.telecom:email
      Slice Nameemail
      Definition

      A contact detail for the person, e.g. a telephone number or an email address.

      ShortA contact detail for the person
      Comments

      Person may have multiple ways to be contacted with different uses or applicable periods. May need to have options for contacting the person urgently, and also to help with identification.

      Control0..*
      TypeContactPoint(CH Core ContactPoint eCH-0046 Email)
      Is Modifierfalse
      Summarytrue
      Requirements

      People have (primary) ways to contact them in some way such as phone, email.

      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      26. RelatedPerson.telecom:email.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
      Control10..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
      Summarytrue
      Fixed Valueemail
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      28. RelatedPerson.telecom:email.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).

      ShortThe 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
      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()))
      30. RelatedPerson.telecom:email.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
      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()))
      32. RelatedPerson.telecom:email.use.extension:emailCategory
      Slice NameemailCategory
      Definition

      Optional Extension Element - found in all resources.

      ShortOptional Extensions Element
      Control0..1
      This element is affected by the following invariants: ele-1
      TypeExtension(eCH-0046 Email Category) (Extension Type: CodeableConcept)
      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())
      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
      34. RelatedPerson.telecom:phone
      Slice Namephone
      Definition

      A contact detail for the person, e.g. a telephone number or an email address.

      ShortA contact detail for the person
      Comments

      Person may have multiple ways to be contacted with different uses or applicable periods. May need to have options for contacting the person urgently, and also to help with identification.

      Control0..*
      TypeContactPoint(CH Core ContactPoint eCH-0046 Phone)
      Is Modifierfalse
      Summarytrue
      Requirements

      People have (primary) ways to contact them in some way such as phone, email.

      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      36. RelatedPerson.telecom:phone.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
      Control10..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
      Summarytrue
      Fixed Valuephone
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      38. RelatedPerson.telecom:phone.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).

      ShortThe 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
      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()))
      40. RelatedPerson.telecom:phone.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
      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()))
      42. RelatedPerson.telecom:phone.use.extension:phoneCategory
      Slice NamephoneCategory
      Definition

      Optional Extension Element - found in all resources.

      ShortOptional Extensions Element
      Control0..1
      This element is affected by the following invariants: ele-1
      TypeExtension(eCH-0046 Phone Category) (Extension Type: CodeableConcept)
      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())
      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
      44. RelatedPerson.telecom:internet
      Slice Nameinternet
      Definition

      A contact detail for the person, e.g. a telephone number or an email address.

      ShortA contact detail for the person
      Comments

      Person may have multiple ways to be contacted with different uses or applicable periods. May need to have options for contacting the person urgently, and also to help with identification.

      Control0..*
      TypeContactPoint(CH Core ContactPoint eCH-0046 Internet)
      Is Modifierfalse
      Summarytrue
      Requirements

      People have (primary) ways to contact them in some way such as phone, email.

      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      46. RelatedPerson.telecom:internet.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
      Control10..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
      Summarytrue
      Fixed Valueurl
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      48. RelatedPerson.telecom:internet.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).

      ShortThe 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
      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()))
      50. RelatedPerson.telecom:internet.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
      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()))
      52. RelatedPerson.telecom:internet.use.extension:internetCategory
      Slice NameinternetCategory
      Definition

      Optional Extension Element - found in all resources.

      ShortOptional Extensions Element
      Control0..1
      This element is affected by the following invariants: ele-1
      TypeExtension(eCH-0046 Internet Category) (Extension Type: CodeableConcept)
      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())
      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
      54. RelatedPerson.address
      Definition

      Address where the related person can be contacted or visited.

      ShortAddress where the related person can be contacted or visited
      Control0..*
      TypeAddress(CH Core Address)
      Is Modifierfalse
      Summarytrue
      Requirements

      Need to keep track where the related person can be contacted per postal mail or visited.

      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. RelatedPerson
      ShortCH Core RelatedPerson
      2. RelatedPerson.extension
      SlicingThis element introduces a set of slices on RelatedPerson.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ url
      • 4. RelatedPerson.extension:citizenship
        Slice Namecitizenship
        ShortCitizenship(s) of related person
        Control0..*
        TypeExtension(Patient Citizenship) (Complex Extension)
        6. RelatedPerson.patient
        TypeReference(CH Core Patient)
        8. RelatedPerson.name
        TypeHumanName(Human Name)
        10. RelatedPerson.telecom
        SlicingThis element introduces a set of slices on RelatedPerson.telecom. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • value @ system
        • 12. RelatedPerson.telecom.system
          Control1..?
          14. RelatedPerson.telecom.value
          Control1..?
          16. RelatedPerson.telecom:email
          Slice Nameemail
          Control0..*
          TypeContactPoint(CH Core ContactPoint eCH-0046 Email)
          18. RelatedPerson.telecom:phone
          Slice Namephone
          Control0..*
          TypeContactPoint(CH Core ContactPoint eCH-0046 Phone)
          20. RelatedPerson.telecom:internet
          Slice Nameinternet
          Control0..*
          TypeContactPoint(CH Core ContactPoint eCH-0046 Internet)
          22. RelatedPerson.address
          TypeAddress(CH Core Address)

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

          0. RelatedPerson
          Definition

          Information about a person that is involved in the care for a patient, but who is not the target of healthcare, nor has a formal responsibility in the care process.

          ShortCH Core RelatedPerson
          Control0..*
          Is Modifierfalse
          Summaryfalse
          Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
          dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
          dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
          dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
          dom-6: A resource should have narrative for robust management (text.`div`.exists())
          2. RelatedPerson.id
          Definition

          The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

          ShortLogical id of this artifact
          Comments

          The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

          Control0..1
          Typeid
          Is Modifierfalse
          Summarytrue
          4. RelatedPerson.meta
          Definition

          The 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.

          ShortMetadata about the resource
          Control0..1
          TypeMeta
          Is Modifierfalse
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          6. RelatedPerson.implicitRules
          Definition

          A 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.

          ShortA set of rules under which this content was created
          Comments

          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.

          Control0..1
          Typeuri
          Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
          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()))
          8. RelatedPerson.language
          Definition

          The base language in which the resource is written.

          ShortLanguage of the resource content
          Comments

          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).

          Control0..1
          BindingThe codes SHOULD be taken from CommonLanguages
          (preferred to http://hl7.org/fhir/ValueSet/languages|4.0.1)

          A human language.

          Additional BindingsPurpose
          AllLanguagesMax Binding
          Typecode
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summaryfalse
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          10. RelatedPerson.text
          Definition

          A 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.

          ShortText summary of the resource, for human interpretation
          Comments

          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.

          Control0..1
          TypeNarrative
          Is Modifierfalse
          Summaryfalse
          Alternate Namesnarrative, html, xhtml, display
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          12. RelatedPerson.contained
          Definition

          These 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.

          ShortContained, inline Resources
          Comments

          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.

          Control0..*
          TypeResource
          Is Modifierfalse
          Summaryfalse
          Alternate Namesinline resources, anonymous resources, contained resources
          14. RelatedPerson.extension
          Definition

          An Extension

          ShortExtension
          Control0..*
          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 RelatedPerson.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • value @ url
          • 16. RelatedPerson.extension:citizenship
            Slice Namecitizenship
            Definition

            The patient's legal status as citizen of a country.

            ShortCitizenship(s) of related person
            Control0..*
            This element is affected by the following invariants: ele-1
            TypeExtension(Patient Citizenship) (Complex Extension)
            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())
            18. RelatedPerson.modifierExtension
            Definition

            May 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).

            ShortExtensions that cannot be ignored
            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 Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
            Summaryfalse
            Requirements

            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.

            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())
            20. RelatedPerson.identifier
            Definition

            Identifier for a person within a particular scope.

            ShortA human identifier for this person
            NoteThis is a business identifier, not a resource identifier (see discussion)
            Control0..*
            TypeIdentifier
            Is Modifierfalse
            Summarytrue
            Requirements

            People are known by a variety of ids. Some institutions maintain several, and most collect identifiers for exchange with other organizations concerning the patient. Examples are national person identifier and local identifier.

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

            Whether this related person record is in active use.

            ShortWhether this related person's record is in active use
            Comments

            This element is labeled as a modifier because it may be used to mark that the resource was created in error.

            Control0..1
            Typeboolean
            Is Modifiertrue because This element is labelled as a modifier because it is a status element that can indicate that a record should not be treated as valid
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summarytrue
            Requirements

            Need to be able to mark a related person record as not to be used, such as if it was created in error.

            Meaning if MissingThis resource is generally assumed to be active if no value is provided for the active element
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            24. RelatedPerson.patient
            Definition

            The patient this person is related to.

            ShortThe patient this person is related to
            Control1..1
            TypeReference(CH Core Patient)
            Is Modifierfalse
            Summarytrue
            Requirements

            We need to know which patient this RelatedPerson is related to.

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

            The nature of the relationship between a patient and the related person.

            ShortThe nature of the relationship
            Control0..*
            BindingThe codes SHOULD be taken from PatientRelationshipType
            (preferred to http://hl7.org/fhir/ValueSet/relatedperson-relationshiptype|4.0.1)

            The nature of the relationship between a patient and the related person.

            TypeCodeableConcept
            Is Modifierfalse
            Summarytrue
            Requirements

            We need to know the relationship with the patient since it influences the interpretation of the information attributed to this person.

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

            A name associated with the person.

            ShortA name associated with the person
            Control0..*
            TypeHumanName(Human Name)
            Is Modifierfalse
            Summarytrue
            Requirements

            Related persons need to be identified by name, but it is uncommon to need details about multiple other names for that person.

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

            A contact detail for the person, e.g. a telephone number or an email address.

            ShortA contact detail for the person
            Comments

            Person may have multiple ways to be contacted with different uses or applicable periods. May need to have options for contacting the person urgently, and also to help with identification.

            Control0..*
            TypeContactPoint
            Is Modifierfalse
            Summarytrue
            Requirements

            People have (primary) ways to contact them in some way such as phone, email.

            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 RelatedPerson.telecom. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • value @ system
            • 32. RelatedPerson.telecom.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
              34. RelatedPerson.telecom.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 RelatedPerson.telecom.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
              • value @ url
              • 36. RelatedPerson.telecom.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
                Control1..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
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                38. RelatedPerson.telecom.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).

                ShortThe 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.

                Control1..1
                Typestring
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                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()))
                40. RelatedPerson.telecom.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
                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()))
                42. RelatedPerson.telecom.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()))
                44. RelatedPerson.telecom.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()))
                46. RelatedPerson.telecom:email
                Slice Nameemail
                Definition

                A contact detail for the person, e.g. a telephone number or an email address.

                ShortA contact detail for the person
                Comments

                Person may have multiple ways to be contacted with different uses or applicable periods. May need to have options for contacting the person urgently, and also to help with identification.

                Control0..*
                TypeContactPoint(CH Core ContactPoint eCH-0046 Email)
                Is Modifierfalse
                Summarytrue
                Requirements

                People have (primary) ways to contact them in some way such as phone, email.

                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                48. RelatedPerson.telecom:email.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
                50. RelatedPerson.telecom:email.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 RelatedPerson.telecom.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                • value @ url
                • 52. RelatedPerson.telecom:email.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
                  Control1..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
                  Summarytrue
                  Fixed Valueemail
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  54. RelatedPerson.telecom:email.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).

                  ShortThe 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.

                  Control1..1
                  Typestring
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  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()))
                  56. RelatedPerson.telecom:email.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
                  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()))
                  58. RelatedPerson.telecom:email.use.id
                  Definition

                  unique id for the element within a resource (for internal references)

                  Shortxml:id (or equivalent in JSON)
                  Control0..1
                  Typestring
                  Is Modifierfalse
                  XML FormatIn the XML format, this property is represented as an attribute.
                  Summaryfalse
                  60. RelatedPerson.telecom:email.use.extension
                  Definition

                  An Extension

                  ShortExtension
                  Control0..*
                  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 RelatedPerson.telecom.use.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                  • value @ url
                  • 62. RelatedPerson.telecom:email.use.extension:emailCategory
                    Slice NameemailCategory
                    Definition

                    Optional Extension Element - found in all resources.

                    ShortOptional Extensions Element
                    Control0..1
                    This element is affected by the following invariants: ele-1
                    TypeExtension(eCH-0046 Email Category) (Extension Type: CodeableConcept)
                    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())
                    64. RelatedPerson.telecom:email.use.value
                    Definition

                    Primitive value for code

                    ShortPrimitive value for code
                    Control0..1
                    Typestring
                    Is Modifierfalse
                    XML FormatIn the XML format, this property is represented as an attribute.
                    Summaryfalse
                    66. RelatedPerson.telecom:email.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()))
                    68. RelatedPerson.telecom:email.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()))
                    70. RelatedPerson.telecom:email.period.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
                    72. RelatedPerson.telecom:email.period.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 RelatedPerson.telecom.period.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                    • value @ url
                    • 74. RelatedPerson.telecom:email.period.start
                      Definition

                      The start of the period. The boundary is inclusive.

                      ShortStarting time with inclusive boundary
                      Comments

                      If the low element is missing, the meaning is that the low boundary is not known.

                      Control0..1
                      This element is affected by the following invariants: per-1
                      TypedateTime
                      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()))
                      76. RelatedPerson.telecom:email.period.end
                      Definition

                      The end of the period. If the end of the period is missing, it means no end was known or planned at the time the instance was created. The start may be in the past, and the end date in the future, which means that period is expected/planned to end at that time.

                      ShortEnd time with inclusive boundary, if not ongoing
                      Comments

                      The high value includes any matching date/time. i.e. 2012-02-03T10:00:00 is in a period that has an end value of 2012-02-03.

                      Control0..1
                      This element is affected by the following invariants: per-1
                      TypedateTime
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Meaning if MissingIf the end of the period is missing, it means that the period is ongoing
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      78. RelatedPerson.telecom:phone
                      Slice Namephone
                      Definition

                      A contact detail for the person, e.g. a telephone number or an email address.

                      ShortA contact detail for the person
                      Comments

                      Person may have multiple ways to be contacted with different uses or applicable periods. May need to have options for contacting the person urgently, and also to help with identification.

                      Control0..*
                      TypeContactPoint(CH Core ContactPoint eCH-0046 Phone)
                      Is Modifierfalse
                      Summarytrue
                      Requirements

                      People have (primary) ways to contact them in some way such as phone, email.

                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      80. RelatedPerson.telecom:phone.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
                      82. RelatedPerson.telecom:phone.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 RelatedPerson.telecom.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                      • value @ url
                      • 84. RelatedPerson.telecom:phone.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
                        Control1..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
                        Summarytrue
                        Fixed Valuephone
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        86. RelatedPerson.telecom:phone.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).

                        ShortThe 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.

                        Control1..1
                        Typestring
                        Is Modifierfalse
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        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()))
                        88. RelatedPerson.telecom:phone.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
                        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()))
                        90. RelatedPerson.telecom:phone.use.id
                        Definition

                        unique id for the element within a resource (for internal references)

                        Shortxml:id (or equivalent in JSON)
                        Control0..1
                        Typestring
                        Is Modifierfalse
                        XML FormatIn the XML format, this property is represented as an attribute.
                        Summaryfalse
                        92. RelatedPerson.telecom:phone.use.extension
                        Definition

                        An Extension

                        ShortExtension
                        Control0..*
                        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 RelatedPerson.telecom.use.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                        • value @ url
                        • 94. RelatedPerson.telecom:phone.use.extension:phoneCategory
                          Slice NamephoneCategory
                          Definition

                          Optional Extension Element - found in all resources.

                          ShortOptional Extensions Element
                          Control0..1
                          This element is affected by the following invariants: ele-1
                          TypeExtension(eCH-0046 Phone Category) (Extension Type: CodeableConcept)
                          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())
                          96. RelatedPerson.telecom:phone.use.value
                          Definition

                          Primitive value for code

                          ShortPrimitive value for code
                          Control0..1
                          Typestring
                          Is Modifierfalse
                          XML FormatIn the XML format, this property is represented as an attribute.
                          Summaryfalse
                          98. RelatedPerson.telecom:phone.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()))
                          100. RelatedPerson.telecom:phone.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()))
                          102. RelatedPerson.telecom:phone.period.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
                          104. RelatedPerson.telecom:phone.period.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 RelatedPerson.telecom.period.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                          • value @ url
                          • 106. RelatedPerson.telecom:phone.period.start
                            Definition

                            The start of the period. The boundary is inclusive.

                            ShortStarting time with inclusive boundary
                            Comments

                            If the low element is missing, the meaning is that the low boundary is not known.

                            Control0..1
                            This element is affected by the following invariants: per-1
                            TypedateTime
                            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()))
                            108. RelatedPerson.telecom:phone.period.end
                            Definition

                            The end of the period. If the end of the period is missing, it means no end was known or planned at the time the instance was created. The start may be in the past, and the end date in the future, which means that period is expected/planned to end at that time.

                            ShortEnd time with inclusive boundary, if not ongoing
                            Comments

                            The high value includes any matching date/time. i.e. 2012-02-03T10:00:00 is in a period that has an end value of 2012-02-03.

                            Control0..1
                            This element is affected by the following invariants: per-1
                            TypedateTime
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summarytrue
                            Meaning if MissingIf the end of the period is missing, it means that the period is ongoing
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            110. RelatedPerson.telecom:internet
                            Slice Nameinternet
                            Definition

                            A contact detail for the person, e.g. a telephone number or an email address.

                            ShortA contact detail for the person
                            Comments

                            Person may have multiple ways to be contacted with different uses or applicable periods. May need to have options for contacting the person urgently, and also to help with identification.

                            Control0..*
                            TypeContactPoint(CH Core ContactPoint eCH-0046 Internet)
                            Is Modifierfalse
                            Summarytrue
                            Requirements

                            People have (primary) ways to contact them in some way such as phone, email.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            112. RelatedPerson.telecom:internet.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
                            114. RelatedPerson.telecom:internet.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 RelatedPerson.telecom.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                            • value @ url
                            • 116. RelatedPerson.telecom:internet.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
                              Control1..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
                              Summarytrue
                              Fixed Valueurl
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              118. RelatedPerson.telecom:internet.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).

                              ShortThe 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.

                              Control1..1
                              Typestring
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              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()))
                              120. RelatedPerson.telecom:internet.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
                              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()))
                              122. RelatedPerson.telecom:internet.use.id
                              Definition

                              unique id for the element within a resource (for internal references)

                              Shortxml:id (or equivalent in JSON)
                              Control0..1
                              Typestring
                              Is Modifierfalse
                              XML FormatIn the XML format, this property is represented as an attribute.
                              Summaryfalse
                              124. RelatedPerson.telecom:internet.use.extension
                              Definition

                              An Extension

                              ShortExtension
                              Control0..*
                              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 RelatedPerson.telecom.use.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                              • value @ url
                              • 126. RelatedPerson.telecom:internet.use.extension:internetCategory
                                Slice NameinternetCategory
                                Definition

                                Optional Extension Element - found in all resources.

                                ShortOptional Extensions Element
                                Control0..1
                                This element is affected by the following invariants: ele-1
                                TypeExtension(eCH-0046 Internet Category) (Extension Type: CodeableConcept)
                                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())
                                128. RelatedPerson.telecom:internet.use.value
                                Definition

                                Primitive value for code

                                ShortPrimitive value for code
                                Control0..1
                                Typestring
                                Is Modifierfalse
                                XML FormatIn the XML format, this property is represented as an attribute.
                                Summaryfalse
                                130. RelatedPerson.telecom:internet.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()))
                                132. RelatedPerson.telecom:internet.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()))
                                134. RelatedPerson.telecom:internet.period.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
                                136. RelatedPerson.telecom:internet.period.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 RelatedPerson.telecom.period.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                • value @ url
                                • 138. RelatedPerson.telecom:internet.period.start
                                  Definition

                                  The start of the period. The boundary is inclusive.

                                  ShortStarting time with inclusive boundary
                                  Comments

                                  If the low element is missing, the meaning is that the low boundary is not known.

                                  Control0..1
                                  This element is affected by the following invariants: per-1
                                  TypedateTime
                                  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()))
                                  140. RelatedPerson.telecom:internet.period.end
                                  Definition

                                  The end of the period. If the end of the period is missing, it means no end was known or planned at the time the instance was created. The start may be in the past, and the end date in the future, which means that period is expected/planned to end at that time.

                                  ShortEnd time with inclusive boundary, if not ongoing
                                  Comments

                                  The high value includes any matching date/time. i.e. 2012-02-03T10:00:00 is in a period that has an end value of 2012-02-03.

                                  Control0..1
                                  This element is affected by the following invariants: per-1
                                  TypedateTime
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Meaning if MissingIf the end of the period is missing, it means that the period is ongoing
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  142. RelatedPerson.gender
                                  Definition

                                  Administrative Gender - the gender that the person is considered to have for administration and record keeping purposes.

                                  Shortmale | female | other | unknown
                                  Control0..1
                                  BindingThe codes SHALL be taken from AdministrativeGender
                                  (required to http://hl7.org/fhir/ValueSet/administrative-gender|4.0.1)

                                  The gender of a person used for administrative purposes.

                                  Typecode
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Requirements

                                  Needed for identification of the person, in combination with (at least) name and birth date.

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

                                  The date on which the related person was born.

                                  ShortThe date on which the related person was born
                                  Control0..1
                                  Typedate
                                  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()))
                                  146. RelatedPerson.address
                                  Definition

                                  Address where the related person can be contacted or visited.

                                  ShortAddress where the related person can be contacted or visited
                                  Control0..*
                                  TypeAddress(CH Core Address)
                                  Is Modifierfalse
                                  Summarytrue
                                  Requirements

                                  Need to keep track where the related person can be contacted per postal mail or visited.

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

                                  Image of the person.

                                  ShortImage of the person
                                  Control0..*
                                  TypeAttachment
                                  Is Modifierfalse
                                  Summaryfalse
                                  Requirements

                                  Many EHR systems have the capability to capture an image of persons. Fits with newer social media usage too.

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

                                  The period of time during which this relationship is or was active. If there are no dates defined, then the interval is unknown.

                                  ShortPeriod of time that this relationship is considered valid
                                  Control0..1
                                  TypePeriod
                                  Is Modifierfalse
                                  Summaryfalse
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  152. RelatedPerson.communication
                                  Definition

                                  A language which may be used to communicate with about the patient's health.

                                  ShortA language which may be used to communicate with about the patient's health
                                  Comments

                                  If no language is specified, this implies that the default local language is spoken. If you need to convey proficiency for multiple modes, then you need multiple RelatedPerson.Communication associations. If the RelatedPerson does not speak the default local language, then the Interpreter Required Standard can be used to explicitly declare that an interpreter is required.

                                  Control0..*
                                  TypeBackboneElement
                                  Is Modifierfalse
                                  Summaryfalse
                                  Requirements

                                  If a related person does not speak the local language, interpreters may be required, so languages spoken and proficiency is an important things to keep track of both for patient and other persons of interest.

                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  154. RelatedPerson.communication.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
                                  156. RelatedPerson.communication.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())
                                  158. RelatedPerson.communication.modifierExtension
                                  Definition

                                  May 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).

                                  ShortExtensions that cannot be ignored even if unrecognized
                                  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 Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                  Summarytrue
                                  Requirements

                                  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.

                                  Alternate Namesextensions, user content, modifiers
                                  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())
                                  160. RelatedPerson.communication.language
                                  Definition

                                  The ISO-639-1 alpha 2 code in lower case for the language, optionally followed by a hyphen and the ISO-3166-1 alpha 2 code for the region in upper case; e.g. "en" for English, or "en-US" for American English versus "en-EN" for England English.

                                  ShortThe language which can be used to communicate with the patient about his or her health
                                  Comments

                                  The structure aa-BB with this exact casing is one the most widely used notations for locale. However not all systems actually code this but instead have it as free text. Hence CodeableConcept instead of code as the data type.

                                  Control1..1
                                  BindingThe codes SHOULD be taken from CommonLanguages
                                  (preferred to http://hl7.org/fhir/ValueSet/languages|4.0.1)

                                  A human language.

                                  Additional BindingsPurpose
                                  AllLanguagesMax Binding
                                  TypeCodeableConcept
                                  Is Modifierfalse
                                  Summaryfalse
                                  Requirements

                                  Most systems in multilingual countries will want to convey language. Not all systems actually need the regional dialect.

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

                                  Indicates whether or not the patient prefers this language (over other languages he masters up a certain level).

                                  ShortLanguage preference indicator
                                  Comments

                                  This language is specifically identified for communicating healthcare information.

                                  Control0..1
                                  Typeboolean
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summaryfalse
                                  Requirements

                                  People that master multiple languages up to certain level may prefer one or more, i.e. feel more confident in communicating in a particular language making other languages sort of a fall back method.

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