Don't forget modifier QW. Labs will have 16 new tests that you'll be able to report as "CLIA-waived," thanks to a Feb. 11 CMS transmittal on the matter. According to MLN Matters article MM7266, CMS will now consider these tests CLIA-waived. You'll have to append modifier QW (CLIA-waived test) to these codes, which include the following, among others: To read the complete list of new CLIA-waived tests, visit www.cms.gov/MLNMattersArticles/Downloads/MM7266.pdf.