Dialysis patients are challenging CMS’ dialysis star ratings program, using a law called the Data Quality Act, on the grounds the ratings program confuses patients, disadvantages facilities in states with sicker residents and was created without public input. The day after delivering the complaint, Dialysis Patient Citizens learned that CMS had begun testing consumers' understanding of the ratings program even though the agency insisted for nearly four months that consumer testing wasn't necessary, according to the group. Both patients and...