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FHIR SubjectOfCare

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SubjectOfCare properties


  • SubjectOfCare.identifier [1..*] - The cardinality is 1..* because we cannot imagine usecases where patient data is communicated without a patient identifier. [WGM201301 It's now present on Patient]
  • SubjectOfCare.subject Resource(Person|Animal) [1..1] - We think Animal is not 80%. Leaving it out of the resource reference would lead to us have an attribute "patient" and an extension attribute "animal", which are mutually exclusive. That's not very practical so we leave the one subject attribute of type Resource(Person|Animal) [WGM201301 Patient now covers both humans and animals, we might need to look at its current properties]
  • SubjectOfCare.providerOrganization [1..1] - You're always a person in the context of an organization, so the cardinality is 1..1. The name of the attribute is somewhat long, but we want to distinguish between a provider "Person" (which is a resource) and providerOrganization. Open for suggestions. [WGM201301 It's now present on Patient as provider]
  • SubjectOfCare.status - Are there any other states? We think not, so we will call this, which is a boolean. [WGM201301 It's now present on Patient]
  • confidentiality, CodeableConcept [0..*] - We keep it in 80%.

We declared it an extension on Soc in our telcon of 20120913 [TELCON 20130218 Reconfirmed this decision and removed from model]

  • deceasedDate, dateTime [0..1] - For SoC, this is in the 80%.

Is time of death *really* something common in registry systems? If it's not in the 80%, then the time should be relegated to an extension. (The fact these are combined into one attribute in the RIM should have no bearing on how we represent them in FHIR.) - Lloyd We said this was extension on Person in our telcon of 20120913 -- Ewout

  • multipleBirthInd [0..1] - We think 80%. We will not rename this (drop the "Ind" suffix), to keep in line with v3.

We put this on Person and called it multipleBirth in our telcon of 20120913 -- Ewout

  • mutlipleBirthOrder [0..1] - We think 80%, we decided to put it on SoC in telcon of 201200913 -- Ewout

My recommendation would thus be to go with "multipleBirth", presuming that's actually a common industry term. You could even consider the dual-attribute approach of multipleBirth[Boolean|Integer] allowing you to say "false", "true", or specify the sequence. (A sequence would imply multipleBirth = true). However, this is only an option, not a requirement and may be overly complex. -- Lloyd [TELCON20130218 It's now present on Patient as a boolean, we will change it as Lloyd suggests, it avoids having two attributes and inconsistencies among them]

  • PatientOfOtherProvider - information can be searched via Person resource

See Person.PatientOfOtherProvider for a discussion -- Ewout

  • BirthPlace (should be an extension of Person) In telcon on 20120917 we decided this is most likely an extension on SoC


See the discussion on Person.ContactParty, Person.Guardian, Person.CareGiver

Within personalContact all formal and informal relationships for the SoC to other people can be communicated. The personalContact refers to a Resource-id within a Resource type. Within the context of this SoC resource only the actual valid relationships are communicated. Changes in PersonalContacts have to be made via their own Resources. The following Resource types are documented by the PA Work Group:

  • ContactParty
  • CareGiver
  • Agent
  • Guardian
  • Guarantor
  • GroupMember

I think GroupMembership is dealt with using a separate Group resource -- Ewout

[TELCON20130211+18 Added these types to the valueset of Contact.relationship, verified with WG]


Citizenship information for a person, including citizen identifier and effective time can be sent in the Citizen class. The nation that scopes the Citizen role, as identified by Nation.code, is mandatory.

Proposal: represent Citizen, a Role in v3, as an extension on Person:

Person.Citizenship [0..*]

  • identifier [0..1], HumanIdentifier (
  • period [0..1], Period (Citizen.effectiveTime)
  • code, Coding [0..1] (Citizen.code) - qualification of legal status within a nation
  • nation, Coding [1..1] (Citizen.politicalNation.code) - The code is required, there's no separate 'name' attribute other than the display value of the Coding

Remarks: identifier has been limited to 0..1.

(20120917) TCON decision is to have this information as an extension and most likely to SubjectOfCare rather than Person. It is not likely that you record this info for Providers and the like


Changes after email discussions Lloyd/Grahame:

  • All associations to other classes replaced by attributes within SoC itself
  • Naming convention: lower camel case
  • Active replaced by status [TELCON20130218 - This is still active J/N, and we'll keep it this way unless we get ballot comments to tell us how and why we should change this]

Changes from TCON 20121015:

  • Rename PertinentObservation -> OtherInformation. OtherInformation can e.g. be used for communicating the following information related to the SoC:
    • Administrative Observations (TELCON (20121004) This relation is not core)
    • Diet
    • Allergies
    • Blood group and other clinical observations

Shouldn't diet/allergies/blood group be handled by Obervations? -- Ewout Open for discussion. What to do with this information? is now restricted to values relevant to the provisioning of food to the patient during a stay, e.g. "vegetarian".

  • Rename PersonalRelationship -> PersonalContact (name to be discussed) - [TELCON20130218 renamed to just "Contact". Since we renamed "contact" to "telecom" because "contact" seemed to mean "contact person", that sounded reasonable]
  • Remove recordLocation (not in the 80%) - [WGM201301 Ok, removed]
  • Rename CareGiver in ProviderOrganization to CareProvider (+ resource) - Registration of CareGiver/Provider is an extension, and belongs to PC domain, InterestOfCare?. If this is the same as "PatientOfOtherProvider" we said: (20120917) TCON decision is to have this information as an extension and most likely to SubjectOfCare rather than Person. It is not likely that you record this info for Providers and the like
  • Remove OtherId (attributes are already present in HumanId)

Changes from TCON 20121022:

  • Add Animal to the person. person itself is yet to be changed. [WGM201301 This is now indeed combined]

TELCON 20130218

  • coverage, Resource(Coverage) [0..*] - This is a Resource, but it is handled by FM, not PA.
  • link - A linked patient record is a record that concerns the same patient. Records are linked after it is realised that at least one was created in error., Resource(SoC) [0..*]

(this attribute comes from the current FHIR Patient resource) options:

    • x-link explicitly
    • imply by id
    • patientLink resource
    • have a Patient.Link of type identifier....which is a UUID and is the same on all patients that are linked

We discussed the norwegian model [1]. We need more people available to have further discussion on this. Left for discussion

  • SubjectOfCare extensions?
    • effectiveTime [TELCO20130211 - this is not core]
    • veryImportantPersonCode Left for discussion