About HCCI

The Health Care Cost Institute is a non-profit, independent, non-partisan research institute dedicated to creating the United States’ most comprehensive source of information on health care activity and promoting research on the drivers of escalating health care costs.

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Complete Data Dictionary

HCCI’s data holdings include claims for over 40 million people covered by employer-sponsored insurance. From these claims, a common set of data elements was developed to support the HCCI reports on costs and utilization. This data dictionary is a listing of those elements.

Please Note: Updates to the Data Dictionary for HCCI researcher data in the secure data Enclave (5.14.18)

  • This Data Dictionary applies to all the HCCI data, 2008-2016, unless specifically noted.
  • A source indicator has been added to the prescription data (“MULTISRC_IND”), that indicates if claim is for a single-source medication or a multi-source medication.
  • Inpatient admissions (“ADMITS”), outpatient visits (“VISITS”), and length of stay (“LOS”) fields now have fractional values, when the claim lines are summed across all of the service lines an inpatient admit or outpatient visit they will equal -1, 0, or 1.

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What Makes HCCI Data Unique?

HCCI holds information on approximately six billion private health insurance claims, making it one of the largest collections of this type of data ever assembled.

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About the HCCI Data Enclave

The HCCI Data Enclave is a tool that allows researchers to access HCCI’s administrative claims data in a secure, virtual environment to conduct academic, non-commercial research.

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HIPAA Fact Sheet

The Health Care Cost Institute (HCCI) takes data security and data privacy seriously, both because federal and state laws mandate it and because of the high, ethical research standards HCCI embraces.

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