Good Afternoon. We are having some discussion about the changes in the drug screen codes for Medicare. The code G0430 has been deleted and is now cross referencing to G0434. The code G0431 has been revised and I am under the inderstanding that this code can only be billed in a laboratory setting and the code G0434 is the one to use in the office setting with the simple complexity(drug test kits0 or moderate complexity (analyser performed in the office. CLIA waived Is this correct? Thanks as always for the help.