Interoperability requirements — the round trip, live

engine: FHIRConnect/v0.0.1
type: context
metadata:
  name:  "Blood Pressure"
  version: 0.0.1a # version of this particular mapping
spec: # schema specific to the FHIRConnect v0.0.1 engine
  system: FHIR
  version: R4

context:
  profileUrl: "Observation"
  templateId: "Blood Pressure"
  archetypes:
    - "openEHR-EHR-OBSERVATION.blood_pressure.v2"
  start: "openEHR-EHR-OBSERVATION.blood_pressure.v2"


# ---- model mapping ----
#  Copyright 2022 Better Ltd (www.better.care)
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at

engine: FHIRConnect/v0.0.1
type: model
metadata:
  name:  openEHR-EHR-OBSERVATION.blood_pressure.v2
  version: 0.0.1a # version of this particular mapping
spec: # schema specific to the FHIRConnect v0.0.1 engine
  system: FHIR
  version: R4
  openEhrConfig:
    archetype: openEHR-EHR-OBSERVATION.blood_pressure.v2
  fhirConfig:
    structureDefinition: http://hl7.org/fhir/StructureDefinition/Observation

# Actual mapping points:
mappings:
  # Each mapping has a unique (self documenting) name.
  - name: "patient"
    # A simple mapping, which maps one attribute to another.
    with:
      # Access the FHIR resource, either in input or output direction.
      fhir: "$resource.subject.reference"
      # Some context variable are necessary to be accessible from the mapping.
      openehr: "$archetype.$ehr"

  # Another mapping which maps on a met condition. This condition is used to identify
  # the correct "component" in the FHIR resource (array).
  - name: "systolic"
    with:
      fhir: "$resource.component.value"
      openehr: "$archetype/data[at0001]/events[at0006]/data[at0003]/items[at0004]"
      type: "QUANTITY"
    fhirCondition:
      # One of the codings has to be the matching LOINC or SNOMED code.
      # incl. implicit handling of arrays, as ".coding" is a set of codings.
      # -> Here the backwards direction is ambiguous. The program will interpret "one of"
      # as "put those in the target resource" if the direction is openEHR->FHIR.
      targetRoot: "$resource.component"                       # Scope of object for 'condition'
      targetAttribute: "code.coding.code" # Actual attribute to check for 'condition'
      operator: "one of"
      criteria: "[$loinc.8480-6, $snomed.271649006]"
      identifying: true                                           # The *one* condition able to identify FHIR input to match this mapping
    # The next step allows a mapping to have a list of succeeding mappings, which
    # are executed in the same scope of the parent mapping.

  - name: "diastolic"
    with:
      fhir: "$resource.component.value"
      openehr: "$archetype/data[at0001]/events[at0006]/data[at0003]/items[at0005]"
      type: "QUANTITY"
    fhirCondition:
      targetRoot: "$resource.component"                       # Scope of object for 'condition'
      targetAttribute: "code.coding.code" # Actual attribute to check for 'condition'
      operator: "one of"
      criteria: "[$loinc.8462-4]"

  - name: "clinical interpretation"
    with:
      fhir: "$resource.component.interpretation.text"
      openehr: "$archetype/data[at0001]/events[at0006]/data[at0003]/items[at1059]"
      type: "STRING"

  - name: "description"
    with:
      fhir: "$resource.code.text"
      openehr: "$archetype/data[at0001]/events[at0006]/data[at0003]/items[at0033]"
      type: "STRING"

  - name: "position hardcoded to openehr"
    with:
      openehr: "$archetype/data[at0001]/events[at1042]/state[at0007]/items[at0008]|code"
      value: "at1000"
      type: "STRING"

  - name: "confounding_factors hardcoded to openehr"
    with:
      openehr: "$archetype/data[at0001]/events[at1042]/state[at0007]/items[at1052]"
      value: "confounding factor"
      type: "STRING"

  - name: "performer hardcoded in fhir"
    with:
      fhir: "$resource.performer.as(Reference).display"
      value: "John Doe"
      type: "STRING"

  - name: "location"
    with:
      fhir: "$resource.bodySite.coding"
      openehr: "$archetype/protocol[at0011]/items[at0014]"
      type: "CODING"
    fhirCondition:
      targetRoot: "$resource.bodySite"
      targetAttribute: "text"
      operator: "one of"
      criteria: "[THIS IS LOCATION OF MEASUREMENT]"