National CC/MCC Capture Rate and Case Mix Index Study. A nationwide analysis of hospitals’ case mix index trends and CC/MCC capture rates since the implementation of ICD-10. 

Since the October 1, 2015 commencement of I-10, both case mix index trends and CC/MCC capture rates nationwide have improved by 2.8% and 0.8% respectively. Years of coding and documentation training to address the tenfold increase in available codes and the need for improved specificity and documentation under I-10 appears to be paying off overall.