Excel · dataset · 2025
Case Mix Index
Listed in California Open Data
The Case Mix Index (CMI) is the average relative DRG weight of a hospital’s inpatient discharges, calculated by summing the Medicare Severity-Diagnosis Related Group (MS-DRG) weight for each discharge and dividing the total by the number of discharges.
Description
The CMI reflects the diversity, clinical complexity, and resource needs of all the patients in the hospital. A higher CMI indicates a more complex and resource-intensive case load.
Although the MS-DRG weights, provided by the Centers for Medicare & Medicaid Services (CMS), were designed for the Medicare population, they are applied here to all discharges regardless of payer.
Read the rest (2 more)
Note
It is not meaningful to add the CMI values together.
Links
Get the data
- Case Mix Index-1996-2025 data.chhs.ca.gov/dataset/5448f054-aa7f-4797-9de2-85767db93dff/resource/3ed58730… ↗
download · from data ca gov
- data-dictionary-case-mix-index data.chhs.ca.gov/dataset/5448f054-aa7f-4797-9de2-85767db93dff/resource/5a04e554… ↗
download · from data ca gov
- Case Mix Index Calculation Example data.chhs.ca.gov/dataset/5448f054-aa7f-4797-9de2-85767db93dff/resource/9a577735… ↗
download · from data ca gov
- All resource data data.chhs.ca.gov/dataset/5448f054-aa7f-4797-9de2-85767db93dff/resource/d5cf4e0c… ↗
download · from data ca gov
Where it is published
- California Open Data dataset page data.ca.gov/dataset/case-mix-index ↗
landing page · from data ca gov
Documentation and papers
- Publisher page hcai.ca.gov/data-and-reports/healthcare-utilization ↗
documentation · from data ca gov
Catalogue records · 1
- CKAN API data.ca.gov/api/3/action/package_show?id=0f0f7d02-29a7-4688-ac7c-621a9392a… ↗
metadata API · from data ca gov
Topics
- Stated by source
- Health and Human Services
- From keywords
- Medicine & Health
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| California Open Data | 0f0f7d02-29a7-4688-ac7c-621a9392a2ca | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| concepts[field].local:field:medicine-health | mapping · data ca gov | connector:data_ca_gov@1.0.0 | |
| concepts[topic].ckan_group:data_ca_gov:health-human-services | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| created_date | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| description | source · data ca gov | connector:data_ca_gov@1.0.0 | /notes |
| license_text | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| publication_date | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| title | source · data ca gov | connector:data_ca_gov@1.0.0 | /title |
| updated_date | source · data ca gov | connector:data_ca_gov@1.0.0 |