Percentage of patients, aged 18 and older, who were surveyed on their patient experience and satisfaction with anesthesia care and who reported a positive experience. This measure will consist of two performance rates: Rate 1: AQIXXa - Percentage of patients, aged 18 and older, who were surveyed on their patient experience and satisfaction with anesthesia care Rate 2: AQIXXb - Percentage of patients, aged 18 and older, who completed a survey on their patient experience and satisfaction with anesthesia care who report a positive experience with anesthesia care NOTE: The measure requires that a valid survey, as defined in the numerator, be sent to patients between discharge from the facility and within 30 days of facility discharge. To report AQI 48b, a minimum number of 20 surveys with the mandatory question completed must be reported.