We recommend reviewing your bill to see if the laboratory has billed your Insurance. If not, contact the laboratory billing department and request that they submit the bill to your insurance provider, or if you've switched insurances, you may have to update them on this. Often, the lab requisition is missing the ICD-10 Code, which explains to your insurance provider the "reasoning" behind the test. If the Code is not listed, that may cause you to receive a bill from the lab.