A groundbreaking study from Columbia University’s Mailman School of Public Health sheds new light on the persistent racial disparities in postpartum health insurance coverage in the United States, illustrating how Medicaid’s continuous coverage policy during the COVID-19 pandemic affected uninsurance rates among Black women, particularly in states that did not expand Medicaid under the Affordable Care Act (ACA). This research is the first to analyze this federal policy’s impact on racial equity in postpartum insurance coverage while contrasting experiences between Medicaid expansion and non-expansion states, providing profound insights into ongoing maternal health inequities.
Medicaid coverage extension to 12 months postpartum has gained recognition as a vital intervention to mitigate maternal morbidity and mortality, especially for women in states that refrained from expanding Medicaid eligibility under the ACA. The COVID-19 pandemic’s continuous Medicaid coverage provision created a natural policy experiment enabling researchers to examine the implications of prolonged coverage on insurance continuity postpartum. This study allows for a rare empirical evaluation of how such policies can influence disparities in insurance outcomes during the critical postpartum period.
The postpartum phase represents an intense window of physiological recovery and psychological adjustment that demands uninterrupted healthcare access to prevent adverse maternal outcomes. According to Teresa Janevic, PhD, the study’s lead epidemiologist, consistent health monitoring during this period is crucial to reduce postpartum complications and support maternal well-being. This comprehensive investigation examined uninsurance trends, Medicaid enrollment, and private insurance coverage among Black and White women, dissecting how these evolved before and during the continuous coverage policy across states with differing Medicaid expansion statuses.
Maternal mortality and morbidity statistics before the pandemic underscored the alarming racial inequities faced by Black women. In 2022, Black women experienced pregnancy-related deaths at twice the rate of non-Hispanic White women within 42 days postpartum, with their risk rising to more than four times that of their White counterparts when considering deaths up to a year after delivery. Beyond mortality, the postpartum period exposes Black women to disproportionately higher rates of severe maternal complications, postpartum depression, hospital readmissions, and emergency healthcare utilization, highlighting a deep-seated healthcare crisis tethered to systemic inequalities.
The American Rescue Plan Act (ARPA) catalyzed a nationwide effort to confront these disparities by mandating nearly all states to extend Medicaid postpartum coverage to one year, marking one of the most significant policy responses to America’s maternal health emergency. Prior to the pandemic-driven policy changes, uninsurance rates among postpartum women starkly differed between states that expanded Medicaid and those that did not. In 2019, postpartum uninsurance hovered at 16.5% for Black women and 11% for White women in non-expansion states, contrasting sharply with substantially lower rates of 6.4% and 5.4% respectively in expansion states.
The Columbia study’s analyses illuminate notable improvements in insurance coverage following the introduction of continuous Medicaid coverage. Crucially, postpartum uninsurance among Black women declined significantly more in Medicaid non-expansion states than in expansion states—dropping by five percentage points more between 2019 and 2023. This improvement largely stemmed from increased Medicaid enrollment rather than shifts to private insurance, indicating the policy’s effective role in sustaining public coverage for vulnerable populations in restrictive state contexts.
Data show that in non-expansion states, the share of Black women covered by Medicaid postpartum increased from 38% in 2019 to 42% in 2023, peaking at 45% during 2021 amid the height of the continuous coverage policy. Conversely, White women exhibited larger declines in postpartum uninsurance in non-expansion states driven primarily by gains in private insurance coverage, with Medicaid expansion accounting for a smaller portion of their insurance gains. This divergence underscores the differential pathways through which racial groups attain postpartum insurance continuity, reflecting economic and systemic disparities.
Despite these advancements, the study stresses that entrenched Black-White disparities in postpartum insurance uninsurance rates remain stubbornly persistent. While policy interventions like Medicaid extensions can alleviate some barriers to coverage, they alone are insufficient to dismantle the broader systemic inequities that fuel racial disparities in maternal health outcomes. Continuous coverage policies are necessary but not a panacea for achieving equitable healthcare access for postpartum women across racial groups.
The study’s rigorous methodology leveraged comprehensive data from the American Community Survey (ACS), utilizing the IPUMS USA database encompassing all 50 states and the District of Columbia from 2016 to 2019 and then 2021 to 2023. With a sample size of 157,016 non-Hispanic Black and White women who gave birth within the preceding year, the analysis adjusted for critical socioeconomic covariates such as age, employment, and household income. This robust approach enhanced the reliability of the findings and underscored nuanced variations in Medicaid and private insurance uptake before and during the pandemic-induced policy environment.
Janevic and colleagues conclude that Medicaid postpartum coverage extensions play an essential role in reducing postpartum uninsurance, particularly for Black women residing in Medicaid non-expansion states, who otherwise face substantial coverage gaps postpartum. However, the study’s findings caution policymakers that Medicaid coverage extensions represent only one facet of a multipronged strategy needed to close racial health gaps, emphasizing the need for complementary interventions addressing broader social determinants and structural racism embedded in the healthcare system.
The results spotlight the critical importance of sustaining and enhancing Medicaid access to advance maternal health equity. Given that Black women disproportionately rely on Medicaid during pregnancy and postpartum for health services, any diminution in Medicaid eligibility or coverage risks exacerbating existing maternal health disparities. Protecting Medicaid coverage continuity, therefore, emerges as a linchpin in safeguarding vulnerable populations’ health during a pivotal and high-risk life stage.
Collaborators on this study include experts from the University of California Fielding School of Public Health, Icahn School of Medicine at Mount Sinai, Columbia Mailman School, and SUNY Albany. Funding support came from the National Institutes on Minority Health and Health Disparities alongside the Robert Wood Johnson Foundation, reflecting the increasing prioritization of maternal health equity research within key public health funding entities.
As the U.S. continues to grapple with one of the highest maternal mortality rates among developed nations, especially among Black women, this study provides critical empirical evidence demonstrating the tangible benefits of Medicaid policy reforms while calling attention to the enduring racial inequities in postpartum insurance coverage. Its findings offer an urgent policy message: expanding and maintaining Medicaid postpartum coverage is a vital step—but not the final solution—in remedying the maternal health crisis, requiring broader systemic change to achieve true racial justice in maternal health.
Subject of Research: Racial disparities in postpartum health insurance coverage and the effects of continuous Medicaid coverage policies in Medicaid expansion versus non-expansion states.
Article Title: Racial Inequities in Postpartum Coverage During Medicaid Continuous Coverage: Evidence from ACA Expansion vs Non-Expansion States
News Publication Date: March 17, 2026
Web References:
American Journal of Preventive Medicine: https://www.ajpmonline.org/article/S0749-3797(26)00063-2/fulltext
DOI: http://dx.doi.org/10.1016/j.amepre.2026.108320
References: The study utilized data from the American Community Survey (ACS) via IPUMS USA microdata, 2016–2019 and 2021–2023.
Keywords: Maternal Health, Postpartum Insurance Coverage, Medicaid Extension, Racial Disparities, Black Maternal Mortality, Affordable Care Act, Medicaid Expansion, Health Equity, Continuous Coverage Policy, COVID-19 Policy Impact, Public Health Policy, Maternal Morbidity
