13-year-old Cambrie suffers from as many as four seizures a day. Her mother is laser-focused on finding effective treatment for Cambrie’s epilepsy. It’s all-consuming, she says. More than 20 medications and two operations haven’t stopped Cambrie’s seizures, and their insurance denied coverage for deep brain stimulation, a surgical treatment her doctors hoped could finally provide relief. Several weeks after NBC News reached out to Anthem Blue Cross Blue Shield about the denial, the insurer changed its policy to include coverage of deep brain stimulation for certain children.