While those with Medicaid insurance were more likely to have an insurance transition before or after giving birth, those with private insurance were also found to have insurance changes.
More than 1 in 3 continuously insured individuals in Massachusetts experienced a health insurance transition during the 12 months before or after giving birth, according to a University of Massachusetts Amherst study.
The study, published in JAMA Network Open, analyzed data from more than 97,000 births from 2015 through 2017.
Almost all people in Massachusetts are covered by health insurance, the researchers pointed out, and the findings were released as other states seek to expand their rate of health insurance coverage, particularly during the perinatal period.
Of the 97,335 deliveries included in the study, about 45% were covered by private insurance, 23.4% by Medicaid, 28.1% by Medicaid managed care and between 3.1% and 4.5% by Marketplace plans.
The analysis revealed that 37.1% of the insured had a transition at some point in the 12 months before and/or after delivery. Among those with an insurance change, 24% had postpartum insurance transitions only, 38.8% had pre-delivery transitions only and 37.2% had both pre-delivery and postpartum transitions.
Individuals with Medicaid and Medicaid managed care were 47 percentage points and 50.1 percentage points more likely, respectively, to have an insurance transition than those covered by private insurance.
The research was part of a larger project supported by the Commonwealth Fund that is looking at the impact of the transition to Medicaid accountable care organizations (ACOs) in Massachusetts on maternal outcomes and postpartum care. This study was looking at births before ACOs went into effect.
The findings suggest that further research is important to examine the impact of insurance transitions on perinatal care and outcomes.
“Switching insurance plans disrupts the continuity of care even for those who remain insured during the perinatal period, and it may reduce the access to care,” said lead author Chanup Jeung, a postdoctoral associate in the School of Public Health and Health Sciences, in a statement.
The most common transitions involved moving in and out of Medicaid and Medicaid managed care coverage, compared with commercial insurance.
Previous research has shown that continuous insurance helps improve birth outcomes and reduce perinatal morbidity and mortality. This is the first study to examine how many continuously insured Massachusetts residents change insurance types during this critical period.
“Our study gives a different perspective,” Jeung said. “We’re thinking this kind of insurance transition – even for continuously insured people–may affect their outcomes.”
Senior author Kimberley Geissler, PhD, associate professor of health policy and management, said the research team sought to determine the various causes of the insurance transitions.
“One way people can move is because they want to change insurer or they want to change providers,” she says. “The other reason is because of Medicaid redeterminations.”
For example, Medicaid requirements are based on ever-changing factors, such as income, family size, marital and employment status, as well as pregnancy status.
“We know from the literature that these transitions happen, but I was surprised by how common they are, and also that they’re common across insurance types,” Geissler said. “People who are privately insured are less likely to have a transition, but they are not immune from these transitions.”
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