openapi: 3.1.0
info:
  title: Orion Health FHIR Alerts Messages API
  description: The Orion Health FHIR API provides standards-based access to healthcare data using the HL7 FHIR (Fast Healthcare Interoperability Resources) specification. It enables healthcare organizations to read, search, create, and update clinical resources including patients, encounters, observations, conditions, medications, allergies, procedures, diagnostic reports, and care plans. The API conforms to FHIR R4 (v4.0.1) and supports both JSON and XML representations.
  version: 1.0.0
  contact:
    name: Orion Health API Support
    email: apisupport@orionhealth.com
    url: https://www.orionhealth.com/support
  license:
    name: Proprietary
    url: https://www.orionhealth.com/terms-of-service
  termsOfService: https://www.orionhealth.com/terms-of-service
servers:
- url: https://api.orionhealth.com/fhir
  description: Production FHIR Server
- url: https://sandbox.orionhealth.com/fhir
  description: Sandbox FHIR Server
security:
- oauth2: []
- bearerAuth: []
tags:
- name: Messages
  description: Message search, inspection, and reprocessing
paths:
  /queues/{queueId}/messages:
    get:
      operationId: listQueueMessages
      summary: Orion Health List messages in a queue
      description: Retrieve messages currently held in a specific queue.
      tags:
      - Messages
      parameters:
      - name: queueId
        in: path
        required: true
        schema:
          type: integer
      - name: status
        in: query
        schema:
          type: string
          enum:
          - queued
          - error
          - held
      - $ref: '#/components/parameters/PageOffset'
      - $ref: '#/components/parameters/PageLimit'
      responses:
        '200':
          description: List of messages
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Message'
                  pagination:
                    $ref: '#/components/schemas/Pagination'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /messages/{messageId}:
    get:
      operationId: getMessage
      summary: Orion Health Get message details
      description: Retrieve the full content and metadata of a specific message, including its processing history.
      tags:
      - Messages
      parameters:
      - name: messageId
        in: path
        required: true
        schema:
          type: integer
      - name: includeBody
        in: query
        description: Include message body content
        schema:
          type: boolean
          default: true
      responses:
        '200':
          description: Message details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MessageDetail'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /messages/search:
    get:
      operationId: searchMessages
      summary: Orion Health Search messages
      description: Search for messages across all routes and queues using various criteria including message content, type, and date range.
      tags:
      - Messages
      parameters:
      - name: query
        in: query
        description: Full-text search query against message content
        schema:
          type: string
      - name: messageType
        in: query
        description: HL7 message type (e.g., ADT^A01)
        schema:
          type: string
      - name: routeId
        in: query
        schema:
          type: integer
      - name: status
        in: query
        schema:
          type: string
          enum:
          - processed
          - error
          - held
          - queued
      - name: dateFrom
        in: query
        schema:
          type: string
          format: date-time
      - name: dateTo
        in: query
        schema:
          type: string
          format: date-time
      - name: patientId
        in: query
        description: Search by patient identifier in message content
        schema:
          type: string
      - $ref: '#/components/parameters/PageOffset'
      - $ref: '#/components/parameters/PageLimit'
      responses:
        '200':
          description: Search results
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Message'
                  pagination:
                    $ref: '#/components/schemas/Pagination'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /messages/{messageId}/reprocess:
    post:
      operationId: reprocessMessage
      summary: Orion Health Reprocess a message
      description: Resubmit a held or errored message for reprocessing through its route.
      tags:
      - Messages
      parameters:
      - name: messageId
        in: path
        required: true
        schema:
          type: integer
      responses:
        '200':
          description: Message resubmitted for processing
          content:
            application/json:
              schema:
                type: object
                properties:
                  messageId:
                    type: integer
                  status:
                    type: string
                  reprocessedAt:
                    type: string
                    format: date-time
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '409':
          description: Message cannot be reprocessed in current state
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  responses:
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Authentication required
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  parameters:
    PageLimit:
      name: limit
      in: query
      description: Maximum number of items to return
      schema:
        type: integer
        minimum: 1
        maximum: 100
        default: 20
    PageOffset:
      name: offset
      in: query
      description: Number of items to skip
      schema:
        type: integer
        minimum: 0
        default: 0
  schemas:
    Error:
      type: object
      properties:
        code:
          type: string
        message:
          type: string
        details:
          type: array
          items:
            type: object
            properties:
              field:
                type: string
              message:
                type: string
    Message:
      type: object
      properties:
        id:
          type: integer
        messageType:
          type: string
          description: HL7 message type (e.g., ADT^A01, ORM^O01)
        status:
          type: string
          enum:
          - processed
          - error
          - held
          - queued
        routeId:
          type: integer
        routeName:
          type: string
        receivedAt:
          type: string
          format: date-time
        processedAt:
          type: string
          format: date-time
        size:
          type: integer
          description: Message size in bytes
        errorMessage:
          type: string
    MessageDetail:
      type: object
      properties:
        id:
          type: integer
        messageType:
          type: string
        status:
          type: string
        routeId:
          type: integer
        routeName:
          type: string
        body:
          type: string
          description: Full message content
        properties:
          type: object
          additionalProperties:
            type: string
          description: Message metadata properties
        receivedAt:
          type: string
          format: date-time
        processedAt:
          type: string
          format: date-time
        processingTimeMs:
          type: integer
        size:
          type: integer
        errorMessage:
          type: string
        processingHistory:
          type: array
          items:
            type: object
            properties:
              step:
                type: string
              componentName:
                type: string
              timestamp:
                type: string
                format: date-time
              status:
                type: string
              details:
                type: string
    Pagination:
      type: object
      properties:
        offset:
          type: integer
        limit:
          type: integer
        total:
          type: integer
        hasMore:
          type: boolean
  securitySchemes:
    oauth2:
      type: oauth2
      description: OAuth 2.0 authorization using SMART on FHIR
      flows:
        authorizationCode:
          authorizationUrl: https://auth.orionhealth.com/oauth2/authorize
          tokenUrl: https://auth.orionhealth.com/oauth2/token
          scopes:
            patient/*.read: Read access to all patient data
            patient/*.write: Write access to all patient data
            patient/Patient.read: Read access to Patient resources
            patient/Observation.read: Read access to Observation resources
            patient/Condition.read: Read access to Condition resources
            patient/MedicationRequest.read: Read access to MedicationRequest resources
            launch: Launch context
            openid: OpenID Connect
            fhirUser: FHIR user identity
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT