Z-Codes for Medicare Advantage (Data File)

For access to the DEX® Registry and molecular diagnostic test identification

This new data and registry solution 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 alphanumeric codes assigned within the DEX Diagnostics Exchange. The test registry catalog is available for reference and review by other stakeholders in the health care system. A Z-Code is not just an “administrative identifier.” Z-Codes are a commitment to establishing test quality through a multifaceted process. No other genetic identifier has an established, scalable test quality component leveraged by CMS with a large national adoption rate. Health plans who purchase a Z-Code® license are purchasing access to proprietary data contained in the DEX® Registry. The license includes a payer user role on the DEX Registry website and DEX data files.

Call us today to learn how your organization can benefit from access to this vital data. Available only from Optum, the exclusive commercial distributor of Z-Code data and solutions, in partnership with Palmetto GBA.

Note: DEX® Z-Codes, as outlined in the DEX Diagnostics Exchange Registry, are unique identifiers used to facilitate the transparent sharing of test information between labs and payers. These codes are specific to the DEX platform and are essential for the registration and billing of diagnostic tests. In contrast, ICD-10 z codes categorize reasons for healthcare encounters that do not involve a diagnosis of illness or injury, such as factors influencing health status and contact with health services. They serve entirely different purposes and are not interchangeable.