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Healthcare Information Division - Case Mix Index
The Case Mix Index (CMI) is a measure of the relative cost or resources needed to treat the mix of patients in each licensed California hospital during the calendar year. An example of how the CMI is used and the method to calculate it is here.
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Attention Data Users: Please exercise caution when interpreting OSHPD data. The use of improper assumptions and analytical methods may result in erroneous or misleading conclusions. Conclusions drawn from OSHPD data are the sole responsibility of the user. Users should be aware that financial and utilization data products are based on a dynamic database that is constantly being updated. As a result, the same data item for a facility may change over time or be different between products.
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