For a couple years, we've been hearing about state-level biomarker bills, which require insurance coverage for FDA and/or guideline-based biomarkers. The bills vary; some die in committee, some pass for all biomarkers, some pass for cancer only.
See diverse types of cancer policy at TriageCancer.Org:
See their detailed table of all the state level biomarker bills:
https://triagecancer.org/state-laws/health-insurance-biomarker-testing
More Links
See a 2022 article at ACCC here. See news at ACS here. See news at NantHealth here. See a PubMed article, Sadigh et al. in "Cancer" 128:2865, 2022, here.