Today CBO released four products that, in combination, explain how the agency uses its new health insurance simulation model, HISIM2, to generate estimates of health insurance coverage and premiums for people under age 65.

    

CBO describes how its new health insurance simulation model was used to develop the agency’s new baseline budget projections. CBO also has made available segments of computer code to provide more detail about how the new model works.

    

This report explains how CBO defines health insurance coverage, describes how CBO combines data from various sources to produce estimates of different types of coverage in past years, and shows such estimates for the years 2015 to 2018.

    

CBO developed a new version its health insurance simulation model, HISIM2, including using new sources of input data. This paper describes the new input data and the methods for adjusting and adding to those data to form the sample used in HISIM2.