Part 9: The Fourth Trimester: The Coverage Cliff Nobody Fixed

Part 9 of Structural Inequity in Prenatal Care

More than half of pregnancy-related deaths in the United States occur after delivery. Under the historical Medicaid structure, coverage ended 60 days postpartum. For Black women, whose Medicaid coverage finances 65% of their births, this created a cliff: survive the delivery, lose the insurance, die weeks later of a cardiovascular complication that anyone with a blood pressure cuff and a follow-up appointment could have caught. This is not a complex policy problem. It is a billing decision.

The American obstetric system has, for most of its modern history, been organized around a delivery event. Nine months of prenatal care, the delivery, and then a single postpartum visit at six weeks. If a woman was covered by pregnancy-related Medicaid, her coverage extended to 60 days after the end of her pregnancy and then terminated. Whether she had recovered fully, whether she had developed new symptoms, whether her blood pressure had normalized, whether her mental health was stable, whether she had a primary care physician: these were questions whose answers were not required before the coverage clock ran out.

This structure did not emerge from clinical evidence about postpartum recovery timelines. It emerged from a legislative decision in which 60 days was deemed sufficient. The clinical evidence has been accumulating for decades to suggest that 60 days is far from sufficient, and that the deaths occurring after that coverage cliff are not random. They fall disproportionately on Black women, on low-income women, on the women whose Medicaid coverage ends precisely when their clinical vulnerability continues.

The fourth trimester, the 12-week period following delivery during which the maternal body undergoes dramatic physiological change, has received increasing clinical attention over the past decade. It has not received proportional policy attention. And the mismatch between the clinical reality of postpartum risk and the policy structure of postpartum coverage is one of the most concrete and tractable sources of excess maternal mortality in the United States.

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