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.

MAINTENANCE SCHEDULE

The DEX Application will be down for maintenance at the following times:

Every Thursday from 7:30 pm - 10:30 pm Eastern Time.

Every Sunday from 5:00 pm - 8:00 pm Eastern Time.

The site will be available immediately after maintenance completes.

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 Lab or Hospital
Register as a Manufacturer

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.

Register as a Public User

Already Registered?

A valid email address is required.
Password is required.
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DEX Z-Code® Identifiers, and all other software and content, © 2025 Palmetto GBA, LLC and/or one of its subsidiaries and affiliates. All Rights Reserved.
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