Case Mix Index (CMI) From MS-DRG Relative Weights
Case mix index from a list of discharges' MS-DRG relative weights: their sum over the number of discharges.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- MS-DRG relative weights, one discharge per line, or a weight and a count
- 1.2345 0.8765, 3 2.1, 2
Result: Case mix index 1.3440 over 6 discharges.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- MS-DRG relative weights, one discharge per line, or a weight and a count
- Payment rate per weight of 1.0 ($)
How this is calculated
Citation
Stated arithmetic: the case mix index is the sum of the discharges' MS-DRG relative weights over the number of discharges. The weights are CMS IPPS Table 5 for the fiscal year, entered by the reader; none is bundled.
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.