CPT code 0179U is a Proprietary Laboratory Analyses (PLA) code reported for the Resolution ctDx Lung™ test from Resolution Bioscience Inc., a molecular diagnostics service that analyzes cell–free DNA (cfDNA) to detect single nucleotide variations, insertions and deletions, gene fusions, and copy number variations to inform potential targeted therapies for non–small cell lung cancer; the service is a laboratory-based molecular pathology test typically performed in a clinical reference laboratory and billed as an advanced genomic profiling assay.

For related coverage guidance, see recent payer policy updates: RTM Testing of Homocysteine Metabolism-Related Conditions, Multimarker Serum Testing Related to Ovarian Cancer, Genomic Profiling for Selecting Targeted Cancer Therapies.