In O.S.T. v. Regence BlueShield, the Washington Supreme Court held that Regence’s exclusion of neurodevelopmental therapies (NDT) in individual policies violated the mental health parity act, RCW 48.44.341. The Court rejected Regence’s reliance on an earlier statute, RCW 48.44.450, which mandates NDT to children under seven in group plans only. The named plaintiffs were