CLIA Numbers (Rev. 1, 10-01-03)

by  Jared Staheli
July 10th, 2015

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.


CLIA Numbers (Rev. 1, 10-01-03). (2015, July 10). Find-A-Code Articles. Retrieved from

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