In an unusual turn of events, the LCDs drew comment from a coalition of 7 organizations, including AMP, CAP, American Gastroenterological Association, Infectious Disease Society of America, and others. The comment letter on the GI panel LCD (DL37368) is here. The comment letter on the respiratory viral panel LCD (DL37301) is here.
In both cases, the organizations argue that the draft LCD coverage was too narrow. All four relevant documents (the 2 draft LCDs and 2 comment letters) are together in one cloud zip file, here.