The Colorado Department of Health Care Policy and Financing (HCPF) has been working toward improving services and supports provided to children in the state with both an intellectual or developmental disability (IDD) and a mental health condition. Meeting the unique needs of these children can be particularly challenging because services, programs, providers and the entities responsible for the coordination of supports are typically determined by an individual's disability type or diagnosis. However, determining whether an individual's behavioral or emotional symptoms derive from an intellectual or developmental disability, organic brain pathology, or a mental illness, is complicated.