Health Insurance Marketplace 2015 Open Enrollment Period: January Enrollment Report. Section III. Methodological Overview

01/29/2015

The data reported here have been obtained from the information systems of the Centers for Medicare & Medicaid Services (CMS), based on information collected for 37 states using the HealthCare.gov platform. We also obtained more limited data reported to CMS by the 14 states (including DC) that are using their own Marketplace platforms. Data for the Small Business Health Options Program (SHOP) Marketplaces are not included in this report.

This report includes data that are currently available on enrollment-related activity for the first two months of the open enrollment period – which generally corresponds with data from 11-15-14 to 1-16-15 for the 37 HealthCare.gov states; and from 11-15-14 to 1-17-15 in states that are using their own Marketplace platforms for the 2015 coverage (see Table 5 below).

Table 5

Marketplace Type Reporting Period
States Using the HealthCare.gov Marketplace Platform (37 states) 11-15-14 to 1-16-15
States Using Their Own Marketplace Platform (14 states)  
California 11-15-14 to 1-18-15
Other 13 States (including DC) 11-15-14 to 1-17-15

Data for certain metrics are not yet available for several of the states that are using their own Marketplace platforms.

It is important to note that some of the 14 states that are using their own Marketplace platforms are not separately reporting data for new consumers and consumers who are reenrolling in Marketplace coverage. Please refer to Appendix D for additional technical notes.

This report also includes available data on the characteristics of individuals who have selected a Marketplace plan for the 37 states that are using the HealthCare.gov platform for 2014, and the 14 states that are using their own Marketplace platforms. In some cases, the data for certain characteristics of Marketplace plan selections are not yet available in selected states.

We believe that the information contained in this issue brief provides the most systematic summary of enrollment-related activity in the Marketplaces for the first two months of the 2015 Open Enrollment period because the data for the various metrics are counted using comparable definitions for data elements across states and Marketplace types.

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