Health Insurance Exchanges (HIX) 2.0

Data to Measure Each State's Key Implementation Decisions


HIX 2.0 provides information on the variation in implementation of the Affordable Care Act across all 50 states and tracks each state’s key implementation decisions.



HIX 2.0 reports provide insight into what health insurance exchange features are most effective and what factors explain state variation.


These data were collected from primary sources such as statutes and other regulatory decisions, but also from official gubernatorial press releases and other reliable news sources to ensure that the quickly changing nature of exchange implementation is being addressed. Datasets will be posted regularly on this site as they are completed, and completed datasets will be updated, and in some cases combined, as implementation moves forward. The date the datasets were last updated will be specified on each dataset's webpage.

Forthcoming Datasets:

  • Insurance Market Characteristics: Infrastructures and interplay between various health insurance markets, including the various exchanges.
  • Adjusted Community Ratings: The extent that states implement ACA rules regarding premium rates.
  • Geographic Scope of Rate-Setting Areas: As above, but specific to the geographic differences in premiums.
  • Brokers: Role of insurance brokers and agents on the exchanges.
  • Determination of Essential Health Benefits: Variation in amount and kind of EHBs offered in a state.
  • Financial Management and Operation of the Exchanges: Variation in budgets and oversight of those budgets between exchanges.
  • Qualified Health Plan Selection and Certification: Substantive content of plans, as well as the variation between plans within and among the states.
  • Risk Adjustment Strategy: How states account for their exchange enrollees' health status and health spending.
  • Small Business Insurance Health Option Program: How participation rules on the small business exchanges vary between states, as well as their relationship to the individual exchanges.


About The Leonard Davis Institute of Health Economics

The HIX 2.0 project is funded by the Robert Wood Johnson Foundation and the Alfred P. Sloan Foundation. The Leonard Davis Institute of Health Economics (LDI) is the University of Pennsylvania’s center for research, policy analysis, and education on the medical, economic, and social issues that influence how health care is organized, financed, managed, and delivered. For more information, please visit  

The creation of the datasets is a work in progress, and we welcome your suggestions. If you have any questions regarding the HIX 2.0 datasets, please contact Gabbie Nirenburg at


A Note To Researchers

If you are using the HIX 2.0 dataset for research purposes, please be sure to include proper citation for the data. Suggested citations are provided on each dataset's webpage. 


Learn More About Our Work

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Additional Resources

Quick Strike Series

Urban Institute Quick Strikes are a series of timely briefs that examine a variety of health insurance coverage issues in the United States.

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SHADAC State Health Access Data Assistance Center

SHADAC helps states to monitor rates of health insurance coverage and provides technical assistance.

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Monitoring & Tracking Series

The Urban Institute monitors, tracks and analyzes trends across diverse states on key health reform implementation issues.

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