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    • HHS Data Inventory

    Metadata Updated: March 27, 2026

    The U.S. Department of Health and Human Services (HHS) publishes the HHS Data Inventory—a comprehensive metadata catalog of public and non-public data assets across the Department—in accordance with the Foundations for Evidence-Based Policymaking Act of 2018 (Evidence Act, Pub. L. 115-435). This inventory enhances information discovery, data usability, and government transparency by providing public visibility into data assets from all HHS Divisions.

    The HHS Data Inventory is available in multiple formats, including machine-readable JSON, Excel (CSV) files, and open APIs for seamless integration and automated retrieval.

    Versions:

    • 118,403 metadata assets (Version 2.2 CSV, published 03/27/26)
    • 113,242 metadata assets (Version 2.1 CSV, published 02/27/26)
    • 112,628 metadata assets (Version 2.0 CSV, published 12/18/25)
    • 18,641 metadata assets (Version 1.1 CSV, published 9/22/25)
    • 8,431 metadata assets (Version 1.0 CSV, published 07/30/25)

    Public use of this metadata and open data assets helps identify gaps, errors, and opportunities for improvement. Your feedback is essential to enhancing metadata quality and the underlying data that matters most to you. HHS is committed to continuous improvement in information quality.

    Please send suggestions to cdo@hhs.gov.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date July 30, 2025
    Metadata Updated Date March 27, 2026

    Metadata Source

    Harvested from Healthdata.gov

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date July 30, 2025
    Metadata Updated Date March 27, 2026
    Publisher HHS Office of the Chief Data Officer
    Maintainer
    Identifier https://healthdata.gov/api/views/kaw8-4tez
    Data First Published 2025-11-25
    Data Last Modified 2026-03-27
    Category HHS
    Public Access Level public
    Bureau Code 009:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://healthdata.gov/data.json
    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 2ccb86e8-cecc-459d-9fa2-ed40467e8ab1
    Harvest Source Id 651e43b2-321c-4e4c-b86a-835cfc342cb0
    Harvest Source Title Healthdata.gov
    Homepage URL https://healthdata.gov/d/kaw8-4tez
    License https://www.usa.gov/government-works
    Program Code 009:110
    Source Datajson Identifier True
    Source Hash e1f6acda5c15430535a600513f4e649b608e4331c57654bbee9ac9d8d941eeeb
    Source Schema Version 1.1

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