List of WI hospital-specific rate increases for 2019 and prior year comparisons. When updated by the Wisconsin Hospital Association’s Information Center (9-25-2019), increases for 2019 were averaging 4.25% (compared to a CPI Index of 1.9%). West Allis/Select Specialty Hospital raised its prices 19.5% on January 1, 2019. The average hospital price increase during 2018 for all WI hospitals was 4.23%, higher than in 2017. Most recent CPI Index for 2018 ended at 2.1%.