Medicare Advantage Providers

Published 06/28/2024

The following national Medicare Advantage payers have begun requiring providers to submit a DEX Z-Code® identifier for Molecular Diagnostic Test Services on claims:

  • UnitedHealthcare®, effective Oct. 1, 2021
  • Optum Care, effective July 1, 2024

Please follow the link to Current CPT® Codes and Z-Code® Notice for Medicare Advantage Providers below to learn more.