Twelve Months of Medicaid After Birth Boosts Follow-Up Care in High-Risk Mothers

For millions of American women, the weeks after childbirth represent a medical crossroads. Those who experienced diabetes or hypertensive disorders during pregnancy carry an elevated risk of emergency department visits, severe maternal morbidity, pregnancy-related death, and the eventual development of type 2 diabetes and cardiovascular disease. Yet for decades, a bureaucratic cliff undermined their care: most women who qualified for Medicaid because of pregnancy lost their coverage just 60 days after delivery, precisely when recommended follow-up screenings and referrals to primary care should have been underway. A new study from Columbia University’s Mailman School of Public Health, published in the journal Health Affairs Scholar, provides some of the strongest evidence to date that extending Medicaid coverage to a full year after childbirth translates into measurably more postpartum health care for the women who need it most.

The research team, led by Teresa Janevic, PhD, associate professor of Epidemiology at Columbia Mailman School, analyzed Medicaid claims from more than five years of births in New York and Texas, examining deliveries between 2019 and 2023. The study population included women covered through pregnancy-related Medicaid, traditional Medicaid, and, in New York, Emergency Medicaid. Importantly, the investigators also included women with preexisting diabetes and hypertension, groups that likewise require careful postpartum monitoring but are often overlooked in studies focused narrowly on pregnancy-related coverage. By spanning two large states with very different policy environments and Medicaid populations, the design allowed the researchers to test whether the observed patterns were robust or merely artifacts of a single state’s health system.

The study is among the first to move beyond the question of whether postpartum Medicaid extensions increase insurance coverage and instead ask whether that coverage actually converts into greater use of recommended screenings and outpatient care. This distinction matters. Earlier work from the same research group had shown that extending coverage reduces insurance loss after childbirth, but critics could reasonably argue that a card in a wallet does not guarantee a visit to a clinician. The new findings address that gap directly, focusing on women at high risk for maternal morbidity and chronic disease who stand to gain the most from continuous, connected care during the postpartum year.

What the researchers found was a striking natural experiment unfolding across the study period. Postpartum diabetes screening and outpatient visits increased during the COVID-19 continuous enrollment provision, a federal policy that required states receiving enhanced funding to keep beneficiaries enrolled. When that provision unwound in Texas, utilization declined. Then, following implementation of 12-month postpartum Medicaid coverage in New York, utilization rose again. This rise-and-fall-and-rise pattern tracks the expansion and contraction of coverage with remarkable fidelity, suggesting that insurance continuity is a genuine driver of care rather than a passive correlate. Prescriptions for antihypertensive medications told a more nuanced story, increasing modestly in Texas but showing little change in New York.

Overall, extending Medicaid coverage to 12 months postpartum increased outpatient utilization among women with diabetes or hypertensive disorders of pregnancy in both states. The increases were particularly pronounced in Texas, where baseline rates of postpartum care were lower. That observation carries practical weight: states with the weakest postpartum follow-up may have the most to gain from the extension policy. “Given that New York and Texas have large Medicaid populations and represent very different policy environments, the consistency of our findings suggests that extending postpartum Medicaid coverage is an effective strategy to increase follow-up care among Medicaid beneficiaries,” said Ellerie Weber of the Icahn School of Medicine at Mount Sinai and co-author of the study.

The clinical rationale behind the policy is grounded in well-established risk trajectories. Women who experience diabetes in pregnancy face a substantially heightened likelihood of developing type 2 diabetes in the years that follow, while hypertensive disorders of pregnancy, including preeclampsia, are recognized markers of future cardiovascular disease. Screening for unresolved conditions, monitoring for emerging chronic disease, and establishing ongoing preventive care during the postpartum period can intercept these trajectories before they harden into lifelong illness. The American College of Obstetricians and Gynecologists has long recommended ongoing postpartum care that extends beyond a single six-week visit, framing the postpartum period not as an endpoint but as a bridge to longitudinal primary care. “Postpartum health care plays a key role for women with pregnancy complications such as diabetes or hypertension,” said Janevic. “Screening for unresolved conditions, monitoring for emerging chronic disease, and establishing ongoing preventive care are all critical during this period. Additionally, connecting women to primary care can have lasting benefits for their health.”

The policy landscape has shifted dramatically since the era of the 60-day cliff. Under the American Rescue Plan Act, states were given a new option to extend postpartum Medicaid coverage to a full year, and 49 states along with Washington, D.C., have now adopted it. The COVID-19 public health emergency accelerated this momentum in an unexpected way. Because the Continuous Enrollment Provision required states to maintain coverage for enrolled beneficiaries in exchange for enhanced federal funding, it effectively functioned as a nationwide, if temporary, extension of postpartum insurance. “These policy changes provided a unique opportunity to examine whether expanding insurance coverage leads to greater use of recommended postpartum care,” Weber noted. The unwinding period that followed, when states resumed eligibility redeterminations and disenrollments, offered the mirror-image test case.

The researchers are careful about the limits of what administrative claims can show. Medicaid billing data cannot definitively distinguish whether increased utilization represents entirely new care or a shift of existing care from commercial insurance or self-pay arrangements into Medicaid. “While Medicaid claims cannot tell us whether these changes represent entirely new health care utilization or a shift from commercial insurance or self-pay to Medicaid, the evidence points toward women receiving more postpartum care,” Weber said. “Future research will help clarify the extent to which expanded coverage translates into additional care.” Even with that caveat, the consistency of the utilization increases across two dissimilar states, and their sensitivity to the timing of coverage expansions and contractions, strengthens the case that continuous coverage is doing real work for a population with substantial ongoing health needs.

The findings arrive at a consequential moment for the Medicaid program. States are preparing for federal policy changes under the One Big Beautiful Bill Act, which could reduce Medicaid enrollment through new work requirements, more frequent eligibility reviews, and changes affecting immigrant coverage. Against that backdrop, the study’s authors argue that the evidence underscores the importance of maximizing the benefits of the postpartum extensions already in place. For health systems, the message is operational as much as scientific: the coverage window exists, and it should be used. “Health systems should take advantage of extended postpartum Medicaid coverage to expand follow-up care for women with diabetes and hypertensive disorders of pregnancy,” said Janevic. “Doing so has the potential to improve both postpartum health and long-term prevention of chronic disease.”

Beyond its immediate policy implications, the study contributes to a growing body of research reframing maternal health as a long-arc enterprise rather than a nine-month episode. The co-author team, which includes Frances M. Howell of Columbia Mailman School; Renata E. Howland and Andy Tang of NYU Grossman School of Medicine; Cecilia Ganduglia Cazaban, Joseph Wozny and Chloe Dorsey of UT Health School of Public Health; Annabelle Ng and Toni Stern of the Icahn School of Medicine at Mount Sinai; Ashley Fox of SUNY Albany; and Maria I. Rodriguez of Oregon Health Sciences University, spans institutions across the country, reflecting the multi-state scope of the analysis. If the postpartum year is where future diabetes and cardiovascular disease can be caught early, then the simple act of keeping insurance active for twelve months instead of sixty days may rank among the most cost-effective chronic disease prevention strategies available. The study’s central contribution is to show that when the coverage barrier falls, recommended care follows, offering states a concrete, evidence-backed lever for improving maternal and long-term health outcomes.

Subject of Research: Effects of 12-month postpartum Medicaid coverage extensions on follow-up care for women with diabetes or hypertensive disorders of pregnancy

Article Title: Postpartum Medicaid extensions improve follow-up care for women with pregnancy complications

Article References: Postpartum Medicaid extensions improve follow-up care for women with pregnancy complications. (n.d.). Original publication

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DOI: Not provided

Keywords: Medicaid, postpartum care, pregnancy complications, diabetes in pregnancy, hypertensive disorders of pregnancy, maternal health, health policy, Health Affairs Scholar, Columbia University, insurance coverage, chronic disease prevention, New York