arazzo: 1.0.1
info:
  title: Medplum Create Diagnostic Report
  summary: Create an Observation result, then assemble a DiagnosticReport that references it.
  description: >-
    Models lab result reporting. The workflow first creates an Observation that
    carries a measured result for an existing Patient, then creates a
    DiagnosticReport that references that Observation in its result array, and
    finally reads the DiagnosticReport back to confirm it persisted. Every step
    spells out its FHIR request inline so the flow can be read and executed
    without opening the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: medplumApi
  url: ../openapi/medplum-openapi-original.yml
  type: openapi
workflows:
- workflowId: create-diagnostic-report
  summary: Create an Observation and a DiagnosticReport that references it.
  description: >-
    Creates a result Observation for a Patient, then creates a DiagnosticReport
    that references the Observation, then reads the report back to confirm it.
  inputs:
    type: object
    required:
    - patientId
    - observationCode
    - observationDisplay
    - observationValue
    - observationUnit
    - reportCode
    - reportDisplay
    properties:
      patientId:
        type: string
        description: The id of the existing Patient the result belongs to.
      observationCode:
        type: string
        description: The LOINC code for the result Observation.
      observationDisplay:
        type: string
        description: Human readable display for the observation code.
      observationValue:
        type: number
        description: The numeric measured value of the result.
      observationUnit:
        type: string
        description: The UCUM unit of the measured value.
      reportCode:
        type: string
        description: The LOINC code identifying the diagnostic report panel.
      reportDisplay:
        type: string
        description: Human readable display for the report code.
  steps:
  - stepId: createObservation
    description: >-
      Create a final Observation carrying the measured result for the supplied
      Patient.
    operationId: createResource
    parameters:
    - name: resourceType
      in: path
      value: Observation
    requestBody:
      contentType: application/fhir+json
      payload:
        resourceType: Observation
        status: final
        code:
          coding:
          - system: http://loinc.org
            code: $inputs.observationCode
            display: $inputs.observationDisplay
        subject:
          reference: "Patient/$inputs.patientId"
        valueQuantity:
          value: $inputs.observationValue
          unit: $inputs.observationUnit
          system: http://unitsofmeasure.org
          code: $inputs.observationUnit
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      observationId: $response.body#/id
  - stepId: createReport
    description: >-
      Create a DiagnosticReport for the Patient that references the Observation
      created in the previous step within its result array.
    operationId: createResource
    parameters:
    - name: resourceType
      in: path
      value: DiagnosticReport
    requestBody:
      contentType: application/fhir+json
      payload:
        resourceType: DiagnosticReport
        status: final
        code:
          coding:
          - system: http://loinc.org
            code: $inputs.reportCode
            display: $inputs.reportDisplay
        subject:
          reference: "Patient/$inputs.patientId"
        result:
        - reference: "Observation/$steps.createObservation.outputs.observationId"
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      reportId: $response.body#/id
  - stepId: confirmReport
    description: >-
      Read the newly created DiagnosticReport back by id to confirm it persisted
      and to capture its status.
    operationId: readResource
    parameters:
    - name: resourceType
      in: path
      value: DiagnosticReport
    - name: id
      in: path
      value: $steps.createReport.outputs.reportId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      reportStatus: $response.body#/status
  outputs:
    observationId: $steps.createObservation.outputs.observationId
    reportId: $steps.createReport.outputs.reportId
    reportStatus: $steps.confirmReport.outputs.reportStatus