Welcome to DEX™ Diagnostics Exchange Registry

The DEX™ Diagnostics Exchange is a molecular diagnostic (MDx) test identification and policy management solution that connects payers and labs to bring clarity to MDx testing. MDx tests are uniquely identified and cataloged using DEX Z-Code™ Identifiers – Palmetto GBA’s unique and proprietary 5-character alpha-numeric codes assigned within the DEX Diagnostics Exchange. The test registry catalog is available for reference and review by other stakeholders in the healthcare system.

Visit the website DEX™ Diagnostics Exchange to learn more about the DEX Z-Code program.

Helpful topics:

  • Program overview
  • FAQs
    • Registering your lab
    • Adding tests
    • Test scope and requirements
    • Technical Assessment resources
  • Technical Assessment (TA) forms

Register Your Organization

Submit your in-house tests for DEX Z-Code™ assignment and/or see your reference lab's Z-Codes.

Register as a Public User

Browse the catalog for registered labs and their tests. DEX Z-Code identifiers are not visible to the Public User.

Already Registered?

A valid email address is required.
Password is required.