Billing and Coding: MolDX: Molecular Assays for the Diagnosis of Cutaneous Melanoma

This billing/coding guideline covers molecular assays used to diagnose cutaneous melanoma and provides CPT code selection and claim submission instructions. Key rules: use CPT 81479 for myPath before 2019-07-01 and CPT 0090U on/after 2019-07-01, bill only one test (1 UOS) per patient per melanocytic lesion, include the appropriate DEX Z-Code in specified claim fields, and report the appropriate ICD-10-CM diagnosis code.

"Molecular assays for the diagnosis of cutaneous melanoma are billable when submitted with the appropriate CPT or PLA code for the specific assay."

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