> ## Documentation Index
> Fetch the complete documentation index at: https://help.elationhealth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# API Overview

> A guide to Elation's API 2.0 categories and the resources they expose.

Elation API 2.0 is comprised of a number of resources (e.g. REST endpoints). To simplify understanding, we group the resources into the following top-level API categories:

### [Patient Profile API](/articles/rest/patient-profile-api/patients/the-patient-object)

Resources representing the patient's **demographics** (name, date of birth, address, insurances, etc.) and **clinical profile** (problem list, allergies, histories, vitals, immunizations, etc.).

### [Patient Document API](/articles/rest/patient-document-api/visit-notes/the-visit-note-object)

Resources representing the patient's **clinical documents** — visits, visit notes, non-visit notes, medications, lab results, reports, and more. Documents are signable, and once signed they cannot be updated.

### [Orders API](/articles/rest/orders-api/lab-orders/the-lab-order-object)

Resources for managing **lab, imaging, cardiac, pulmonary, and sleep orders** — including order compendiums, test catalogs, vendor integrations, and results routing.

### [Messaging API](/articles/rest/messaging-api/message-threads/the-message-thread-object)

Resources for **secure in-app messaging** between patients, providers, and staff — including message threads, thread members, and individual messages.

### [Scheduling API](/articles/rest/scheduling-api/appointments/the-appointment-object)

Resources for fully managing a practice's **schedule** with an external application. Supports all CRUD operations on appointments, appointment types, recurring event groups, and rooms.

### [Insurance API](/articles/rest/insurance-api/insurance-companies/the-insurance-company-object)

Resources for managing **insurance companies, insurance plans, and patient insurance policies**.

### [Premium Patient Insurance API](/articles/rest/premium-patient-insurance-api/insurance-eligibility/the-insurance-eligibility-object)

Resources for running real-time **eligibility checks** against patient insurance policies and retrieving full eligibility reports.

### [Billing API](/articles/rest/billing-api/bills/the-bill-object)

Resources representing **itemized superbills** used by physicians for rendered services. Use this API to integrate with third-party PMS billing vendors for claim submission and processing.

### [Practice API](/articles/rest/practice-api/practices/the-practice-object)

Resources representing **practice configuration** — physicians, office staff, service locations, contacts, handouts, delegate permissions, and more.

### [Reference Data API](/articles/rest/reference-data-api/pharmacies/the-pharmacy-object)

Read-only resources for **reference data** used across the platform — pharmacies, medications, medical specialties, languages, and more.

### [User Management API](/articles/rest/user-management-api/users/the-user-object)

Resources for managing **user accounts** within a practice.

### [Event Subscription API](/articles/rest/event-subscription-api/event-subscriptions/the-subscription-object)

Resources for **subscribing to webhook events** and managing published event history. See [Webhooks](/articles/rest/overview/webhooks) for a full list of supported models and payload details.

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