After June 30, 2018, claims for MolDX MDT LCD covered tests without a Z-code will be rejected.

Claims received on or after July 1, 2018 with dates of service on or after February 26, 2018 will require a Z-code on the claim line if the service is covered under the MolDX Molecular Diagnostic Testing (MDT) LCD L35025.

Source: https://www.palmettogba.com/palmetto/MolDX.nsf/DocsCat/MolDx Website~MolDx~Browse By Topic~General~AXYPZR6263?open