This month is your last chance to get on the CAHPS train and avoid a 2 percent Medicare payment cut in 2012. The CAHPS tool measures patient satisfaction. "To fulfill the HHCAHPS requirements for the CY 2012 APU, Medicare HHAs must begin participating in the Home Health Care CAHPS Survey (HHCAHPS) by September 2010," CMS stresses in MLN Matters article SE1025. That means one dry run month in either July, August, or September, and then every month starting 10/01/10.