Welcome to DEX™ Diagnostics Exchange
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 – Change Healthcare’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.
Learn more about the benefits for laboratories, payers and physicians at DEX Diagnostics Exchange.
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.