HL7 FHIR® Implementation Guide: Electronic Case Reporting (eCR) - US Realm
2.1.2 - STU 2 United States of America flag

HL7 FHIR® Implementation Guide: Electronic Case Reporting (eCR) - US Realm, published by HL7 International / Public Health. This guide is not an authorized publication; it is the continuous build for version 2.1.2 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/case-reporting/ and changes regularly. See the Directory of published versions

Resource Profile: US Public Health Exposure Contact Information

Official URL: http://hl7.org/fhir/us/ecr/StructureDefinition/us-ph-exposure-contact-information Version: 2.1.2
Active as of 2024-10-30 Computable Name: USPublicHealthExposureContactInformation
Other Identifiers: OID:2.16.840.1.113883.4.642.40.46.42.54

This Observation profile represents potential patient exposure and contact information and should be used to record information about the patient's exposure to an agent (exposure source) or to record information about those that the patient could have exposed to an agent (exposure target). Recording of this information could assist/support in contact tracing or other control measures.

The type of exposure/contact is contained in Observation.code (environmental, activity, event, location, person, animal, etc.). This value could come from one of the following value sets:

If the exposure/contact is an entity (person, animal, location) then it is represented in Observation.focus which is a reference to a Patient, RelatedPerson, Location, Group, etc.. (An animal would be represented by a RelatedPerson that contains the Extension Practitioner Animal Species). This focus contains either:

  • the patient's contact with an entity (person, animal, or substance) or presence at a location where exposure to an agent could have occurred (aquisition exposure)
  • the patient's contact with an entity (person, animal, or substance) or presence at a location where transmission from the patient could have occurred (transmission exposure)

Free text information about the exposure/contact can be recorded in Observation.valueString and the date or period of exposure is held in Observation.effective[x]. If an address where the exposure/contact took place is known then it can be contained in the address-extension.

The possible agent of concern in the exposure is recorded in Observation.component.

The following are some exposures that might be captured in this profile:

  • Environmental exposures
    • Living facilities
    • Work facilities
    • School facilities
  • Contact exposures
    • Person
    • Animal
  • Event Exposures
    • Sporting event
    • Rally
    • Wedding
    • Activity

Usage:

Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

This structure is derived from Observation

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation 0..* Observation US Public Health Exposure Contact Information
... us-ph-address-extension S 0..1 Address Exposure/contact address
URL: http://hl7.org/fhir/us/ecr/StructureDefinition/us-ph-address-extension
... category S 1..1 CodeableConcept Use AEXPOS for aquisition exposure, use TEXPOS for transmission exposure, or use EXPOS if the type of exposure is unknown
Binding: ActClassExposure (required): ActClassExposure

... code S 1..1 CodeableConcept The type of exposure/contact (environmental, activity, event, location, person, animal, etc.).
... focus S 0..* Reference(US Public Health Patient | RelatedPerson | Group | US Core Location Profile(4.0.0)) Contains either the patient's contact with an entity (person, animal, or substance) or presence at a location where exposure to an agent could have occurred or the patient's contact with an entity (person, animal, or substance) or presence at a location where transmission from the patient could have occurred
... effective[x] S 0..1 dateTime, Period, Timing, instant Time or period the contact/exposure occurred.
... value[x] S 0..1 Specific exposure/contact
.... valueCodeableConcept CodeableConcept
.... valueString string
... component S 0..* BackboneElement Possible agent of concern in the exposure
.... code S 1..1 CodeableConcept ExposureAgent
Required Pattern: At least the following
..... coding 1..* Coding Code defined by a terminology system
Fixed Value: (complex)
...... system 1..1 uri Identity of the terminology system
Fixed Value: http://terminology.hl7.org/CodeSystem/v3-ParticipationType
...... code 1..1 code Symbol in syntax defined by the system
Fixed Value: EXPAGNT
.... value[x] S 1..1 Possible agent of concern in the exposure
..... valueCodeableConcept CodeableConcept
..... valueString string

doco Documentation for this format

Terminology Bindings (Differential)

PathConformanceValueSetURI
Observation.categoryrequiredActClassExposure
http://terminology.hl7.org/ValueSet/v3-ActClassExposure

 

Other representations of profile: CSV, Excel, Schematron