Insurance coverage mandates nearly double supplemental ultrasound use after dense breast notification

Insurance coverage mandates nearly double the odds of supplemental ultrasound after screening mammography in women with dense breasts, while notification laws alone yield modest increases, a study of 12.6 million women finds.

• In a cohort of 12.6 million women, state notification laws were associated with a modest increase in supplemental ultrasound and MRI.
• Insurance coverage mandates nearly doubled the odds of supplemental ultrasound use.
• Laws that informed women about supplemental screening options and targeted notifications only to women with dense breasts were associated with the highest rates of imaging uptake.

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