Proper Submission of DEX Z-Code® for Molecular Diagnostic Services (MolDX) Claims

Effective May 1, 2025, MolDX claims submitted without the DEX Z-Code® in loop 2400 SV101-7 will deny unprocessable. Claims submitted with the 1500 claim form continue to use box 19. Any additional information (i.e. drug) can be added to loop 2400 NTE. More information on all MolDX related items can be found on the Molecular Diagnostic Services (MolDX) webpage.

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