For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
  • Home
    • About the Referral Exchange (RefX)
  • Getting Started
    • API Overview
    • Accessing our APIs
    • Authentication
    • Content Types
    • Request and Response Limits
    • Create and Edit Referrals
    • Print Referrals
    • List Referrals
    • Cancel & Withdraw Referrals
    • Timeline Events
    • Implementation Reference
  • Concepts
    • Referral Lifecycle & Statuses
    • Referral Notes
    • Browser Tab Handling
    • Referral Link
    • NEHR Integration
  • API Reference
    • Changelog
LogoLogo
On this page
  • Key features
  • Supported referral destinations
  • Who can send referrals?
  • Get started with using our SDK
Home

About the Referral Exchange (RefX)

Was this page helpful?

API Overview

Next
Built with

Referral Exchange (RefX) is a unified API platform that facilitates referrals between health systems in Singapore. Build once to integrate with all platforms.

Key features

Unified API Integration Connect once to access all healthcare platforms through our standardized API and data model, simplifying system integration and maintenance.

End-to-End Referral Management Track referral status automatically and exchange information seamlessly within the platform. No more reliance on emails, printed letters, or manual processes.

Smart Data Collection Our system maintains up-to-date specialist requirements and automatically collects necessary information through structured FormSGs forms, ensuring complete and accurate referrals.

Real-Time Appointment Booking Book appointments directly through our platform for selected destinations (SingHealth SOCs and NHG Diagnostics), allowing immediate slot confirmation for your patients.

Supported referral destinations

  • All Specialist Outpatient Clinics (SOCs) across Singapore (NUH, NHG, SingHealth)
  • NHG Diagnostics

Who can send referrals?

  • All General Practitioners (GPs), via the Health Appointment System (HAS)
  • [Apr 2026] All GPs through their respective CMSes, via the SmartCMS Gateway

New to us? Reach us at refx-support@health.gov.sg to discuss your use case.

Get started with using our SDK

If you are using Typescript to build integrations with RefX, you may like to try using our SDK for a better development experience.