Medicare coding changes

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We have implemented the use of a chemistry analyzer and are testing 10 units. On page three of the attached article printed from NHIC, corp website under "What's new from CMS" it states that G0430 was replaced with G0434 and that the description for G0431 was changed. However, in the paragraph immediately following the above statement it states that G0431QW was changed to G0434QW. My question is that with the implementation of this analyzer which is the correct code, G0431 or G0434?? Will the QW modifier still be needed? Are all 10 units billable on one line? Any helpful information will be greatly appreciated.