Association of the Mental Health Parity and Addiction Equity Act and the Affordable Care Act on severe maternal morbidity

Abstract

Objective: This study aimed to characterize the association between Mental Health Parity and the Affordable Care Act and rates of severe maternal morbidity among a population of commercially insured individuals, including individuals with and without perinatal mood and anxiety disorders.

Methods: We conducted a serial, cross-sectional analysis of individuals with an inpatient delivery in Optum's Clinformatics® Data Mart Database from 2008 to 2021. We applied an interrupted time series model with autoregressive integrated moving average to evaluate changes in quarterly severe maternal morbidity rates.

Results: Adjusted severe maternal morbidity rates declined from 167.2 (95%CI: [152.6, 181.9]) per 10,000 deliveries in the first quarter of 2008 to 98.2 (95%CI: [83.5, 112.8]) per 10,000 deliveries in the last quarter of 2021. Severe maternal morbidity rates remained higher, but declined to a greater degree, among those with perinatal mood and anxiety disorders (435.6, 95%CI: [379.9, 491.3], to 165.0, 95%CI: [109.3, 220.8] per 10,000 deliveries) compared to those without (153.0, 95%CI: [140.7, 165.3] to 81.8, 95%CI: [69.6, 94.1] per 10,000 deliveries).

Conclusion: The observed association suggests implementation of Mental Health Parity and Affordable Care Act may have played a role in lowering rates of severe maternal morbidity, particularly among individuals with perinatal mood and anxiety disorders.

Keywords: Health policy; Maternal mental health; Severe maternal morbidity.