Billing and Coding: MolDX: Molecular Diagnostic Tests (MDT)

Billing for MolDX Molecular Diagnostic Tests requires reporting the appropriate CPT code with exactly 1 unit of service and including the DEX Z-Code identifier adjacent to the CPT code in the claim comment/narrative field. Place the DEX Z-Code in the specified fields depending on claim type (Part B: Loop 2400 or SV101-7 for 837P, Item 19 for paper; Part A: SV202-7 for 837I, Block 80 for UB04) and do not add extra characters on SV101-7.

"When entering the DEX Z-Code on the SV101-7 documentation field for Part B claims, do not add additional characters or other information on that line."

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