data.cms.gov

Health Insurance Exchanges Monthly Effectuated Enrollment

The Health Insurance Exchanges Monthly Effectuated Enrollment data provide select metrics on monthly effectuated enrollment across the Federally Facilitated Exchange (FFE) and State‑Based Exchanges on the Federal...

Freshness

Last posted
Period covered
Feb 1, 2026 to Feb 28, 2026
Update frequency
Monthly

Dates as CMS lists them in its catalog.

Columns 5

ColumnWhat it meansType
StateStateTwo‑letter state code for grouping effectuated enrollment by state. Includes “Total” values indicating platform‑level enrollment totals (all platforms, HealthCare.gov, and State‑Based Exchanges).string
PlatformPlatformIndicates the individual insurance marketplace model the state participates in. Values include "All," which represents all marketplace platforms; "HealthCare.gov," which includes Federally Facilitated Exchanges (FFE) and State‑Based Exchanges on the Federal Platform (SBE‑FPs); and "SBE," which represents State‑Based Exchanges that operate their own Exchange and conduct eligibility determinations, enrollment, and other related functions.string
YearYearSpecifies the coverage year for which effectuated enrollment data is reported.string
MonthMonthSpecifies the month in the coverage year for which effectuated enrollment data is reported.string
Effectuated EnrollmentEffectuated_EnrThe total number of individuals with active policies at any point in the indicated month of the indicated year who also paid their premium (if applicable).number

At a glance

Catalog
data.cms.gov
Publisher
Office of Enterprise Data and Analytics (OEDA)
Rows
6,588
Columns
5
State column
State
Topics
Medicare enrollment
Contact
CCIIOwebpages@cms.hhs.gov

API

Free, no key needed. This request returns the first 10 rows as JSON:

https://data.cms.gov/data-api/v1/dataset/1829fdb3-a6f9-4036-856a-3af1f7828c8c/data?size=10

To keep only one state, filter on the State column.

CMS's description

The Health Insurance Exchanges Monthly Effectuated Enrollment data provide select metrics on monthly effectuated enrollment across the Federally Facilitated Exchange (FFE) and State‑Based Exchanges on the Federal Platform (SBE‑FPs), which both use the federal enrollment platform (HealthCare.gov), as well as State‑Based Exchanges (SBEs) that operate their own eligibility and enrollment platforms. These metrics include effectuated enrollment counts by state, exchange platform type, year and month.

Methodology and other documents from CMS:

The summary at the top is the first sentence of this description. Record id cms:1829fdb3-a6f9-4036-856a-3af1f7828c8c. This record as JSON.

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