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Changes in Medicaid Enrollment During the COVID-19 Pandemic Across Six States

24 Pages Posted: 10 Aug 2021

See all articles by Ran S. Sun

Ran S. Sun

Stanford University - Center for Biomedical Informatics Research

Robert W. Staiger

Stanford University; University of Wisconsin - Madison - Department of Economics; National Bureau of Economic Research (NBER)

Antonia Chan

Stanford University - School of Medicine

Laurence C. Baker

Stanford University - Center for Primary Care and Outcomes Research

Tina Hernandez-Boussard

Stanford University - Department of Medicine

More...

Abstract

Background: The COVID-19 public health emergency (PHE) has caused extensive job loss and loss of employer-sponsored insurance. State Medicaid programs have experienced a related increase in enrollment during the PHE. However, the composition of enrollment and enrollee changes during the pandemic is unknown. Understanding changes in the Medicaid population during the PHE may inform policy development and identify strategies to meet the rising needs for insurance coverage during public health emergencies. This study aims to examine changes in Medicaid enrollment and population characteristics during the PHE.

Methods: A retrospective descriptive study documenting changes in Medicaid new enrollment and disenrollment, and enrollee characteristics between March and October 2020 compared to the same time period in 2019 using Full-state Medicaid populations from six states of a wide geographical region. The primary outcomes were medicaid enrollment and disenrollment during the PHE. New enrollment included persons enrolled in Medicaid between March and October 2020 who were not enrolled in January or February of 2020. Disenrollment included persons who were enrolled in March of 2020 but not enrolled in October 2020.

Results: The study included 8.50 million Medicaid enrollees in 2020 and 8.46 million in 2019. Overall, enrollment increased by 13.0% during the PHE compared to 2019, relative enrollment growth of 1.19 million. New enrollment accounted for 24.9% of the relative increase, while the remaining 75.1% was due to disenrollment. A larger proportion of new enrollment in 2020 was among adults aged 27-44 (28.3% vs 23.6%), Hispanics (34.3% vs 32.5%) and in the financial needy (44.0% vs 39.0%) category compared to 2019. Disenrollment included a larger proportion of older adults (26.1% vs 8.1%) and non-Hispanics (70.3% vs 66.4%) than in 2019.

Conclusions and Relevance: Medicaid enrollment grew considerably during the PHE, and the majority of enrollment growth was attributed to decreases in disenrollment rather than increases in new enrollment. Our results highlight the impact of COVID-19 on state health programs and can guide federal and state budgetary planning.

Funding: This study was supported from the Digital Health CRC (Cooperative Research Centre). The DHCRC is established and supported under the Australian Government’s Cooperative Research Centres Program. Funding for Antonia Chan was provided by the Stanford Medical Scholars Fellowship Program.

Declaration of Interest: None to declare.

Suggested Citation

Sun, Ran S. and Staiger, Robert W. and Chan, Antonia and Baker, Laurence C. and Hernandez-Boussard, Tina, Changes in Medicaid Enrollment During the COVID-19 Pandemic Across Six States. Available at SSRN: https://ssrn.com/abstract=3902476 or http://dx.doi.org/10.2139/ssrn.3902476

Ran S. Sun

Stanford University - Center for Biomedical Informatics Research ( email )

1265 Welch Road
Stanford, CA
United States

Robert W. Staiger

Stanford University ( email )

Stanford, CA 94305
United States

University of Wisconsin - Madison - Department of Economics ( email )

1180 Observatory Drive
Madison, WI 53706
United States
608-262-2265 (Phone)

National Bureau of Economic Research (NBER)

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

Antonia Chan

Stanford University - School of Medicine ( email )

291 Campus Drive
Li Ka Shing Building
Stanford, CA 94305-5101
United States

Laurence C. Baker

Stanford University - Center for Primary Care and Outcomes Research ( email )

179 Encina Commons
Stanford, CA 94305-6019
United States

Tina Hernandez-Boussard (Contact Author)

Stanford University - Department of Medicine