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OpenAPI Specification

openapi: 3.2.0
info:
  title: Zus Health FHIR API
  description: FHIR R4 (v4.0.1) REST API for the Zus Health shared health-data platform.
  termsOfService: https://zushealth.com
  contact:
    name: Zus Health
    url: https://docs.zushealth.com
  version: '1.0'
servers:
- url: https://api.zusapi.com
  description: Production
- url: https://api.sandbox.zusapi.com
  description: Sandbox
security:
- bearerAuth: []
tags:
- name: FHIR
  description: General FHIR R4 resources.
paths:
  /fhir/{resourceType}:
    get:
      operationId: searchResources
      tags:
      - FHIR
      summary: Search resources of a given FHIR R4 type
      description: Search any supported FHIR R4 resource type (140+ types including Observation, Condition, Encounter, MedicationStatement, Procedure, DiagnosticReport, DocumentReference, and Binary). Returns a searchset Bundle.
      parameters:
      - name: resourceType
        in: path
        required: true
        schema:
          type: string
        example: Observation
      - name: patient
        in: query
        schema:
          type: string
      - name: _count
        in: query
        schema:
          type: integer
          default: 10
          maximum: 500
      responses:
        '200':
          description: A FHIR searchset Bundle.
          content:
            application/fhir+json:
              schema:
                $ref: '#/components/schemas/Bundle'
    post:
      operationId: createResource
      tags:
      - FHIR
      summary: Create a resource of a given FHIR R4 type
      parameters:
      - name: resourceType
        in: path
        required: true
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/fhir+json:
            schema:
              $ref: '#/components/schemas/Resource'
      responses:
        '201':
          description: Resource created.
  /fhir/{resourceType}/{id}:
    get:
      operationId: readResource
      tags:
      - FHIR
      summary: Read a resource by type and id
      parameters:
      - name: resourceType
        in: path
        required: true
        schema:
          type: string
      - $ref: '#/components/parameters/ResourceId'
      responses:
        '200':
          description: The requested resource.
          content:
            application/fhir+json:
              schema:
                $ref: '#/components/schemas/Resource'
        '404':
          description: Resource not found.
    delete:
      operationId: deleteResource
      tags:
      - FHIR
      summary: Delete a resource by type and id
      parameters:
      - name: resourceType
        in: path
        required: true
        schema:
          type: string
      - $ref: '#/components/parameters/ResourceId'
      responses:
        '200':
          description: Resource deleted.
  /fhir:
    post:
      operationId: submitBundle
      tags:
      - FHIR
      summary: Submit a FHIR transaction or batch Bundle
      description: Submit a FHIR R4 transaction or batch Bundle (up to 100 entries). Supports conditional create, update, and delete by identifier.
      requestBody:
        required: true
        content:
          application/fhir+json:
            schema:
              $ref: '#/components/schemas/Bundle'
      responses:
        '200':
          description: A transaction-response or batch-response Bundle.
          content:
            application/fhir+json:
              schema:
                $ref: '#/components/schemas/Bundle'
components:
  schemas:
    Bundle:
      type: object
      properties:
        resourceType:
          type: string
          example: Bundle
        type:
          type: string
          example: searchset
        total:
          type: integer
        entry:
          type: array
          items:
            type: object
      additionalProperties: true
    Resource:
      type: object
      description: A generic FHIR R4 resource.
      properties:
        resourceType:
          type: string
        id:
          type: string
      additionalProperties: true
  parameters:
    ResourceId:
      name: id
      in: path
      required: true
      schema:
        type: string
      description: The logical id of the resource.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'OAuth2 Bearer access token obtained from the Zus token endpoint (auth.zusapi.com/oauth/token). Sent as Authorization: Bearer <ACCESS_TOKEN>.'