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Inpatient FAQ: November 2012

Published on 

Monday, November 5, 2012

 | RAC Information 
 | FAQ 

Case Mix Index

Question:

What is Case Mix Index (CMI)?

Answer:

CMI is the sum of the relative weights of all DRGs assigned to Medicare inpatient cases, billed by the hospital in a given time-frame, divided by the total number of cases.

Formula for CMI:Total Relative Weights ÷ Total DRGs Coded = CMI

CMI:

•Measures the cost or resources needed to treat patients

•Calculated from billed data

•Reveals how sick your patients really are

•The higher the CMI the more complex the patients are, indicating that they have utilized costly and/or complex resources

 

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This material was compiled to share information.  MMP, Inc. is not offering legal advice. Every reasonable effort has been taken to ensure the information is accurate and useful.