CLIA Numbers

70.4 - CLIA Numbers (Rev. 1, 10-01-03) A3-3628.2.D The structure of the CLIA number follows: Positions 1 and 2 contain the State code (based on the laboratory’s physical location at time of registration); Position 3 contains the letter “D"; and Positions 4-10 contain the unique CLIA system assigned number that identifies the laboratory. (No other laboratory in the country has this number.) Initially, providers are issued a CLIA number when they apply to the CLIA program. Independent dialysis facilities must obtain a CLIA certificate in order to perform clotting time tests.