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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Case Mix Index

    Metadata Updated: November 23, 2025

    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. 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. Note: It is not meaningful to add the CMI values together.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date July 23, 2025
    Metadata Updated Date November 23, 2025

    Metadata Source

    Harvested from State of California

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date July 23, 2025
    Metadata Updated Date November 23, 2025
    Publisher Department of Health Care Access and Information
    Maintainer
    Identifier 0f0f7d02-29a7-4688-ac7c-621a9392a2ca
    Data First Published 2017-06-16T22:30:35.826295
    Data Last Modified 2025-11-06T23:24:50.155459
    Category Health and Human Services
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id b5d7cebb-18a7-4720-a698-4c3e2e389e01
    Harvest Source Id 3ba8a0c1-5dc2-4897-940f-81922d3cf8bc
    Harvest Source Title State of California
    License http://www.opendefinition.org/licenses/cc-by
    Source Datajson Identifier True
    Source Hash 00ccbfc4d81b152490b52b93a09acbd5917e92763e09e8e23cca36238a6d19ae
    Source Schema Version 1.1

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