Proper eating disorders treatment must address both the psychological and physical aspects of the disorder. Many insurance companies have mental health benefits (also known as behavioral health benefits) under a separate umbrella from their physical health benefits. The passage of mental health parity means that, legally, mental health must be covered on par with physical health. However, the separation can still exist, and behavioral health coverage may even be contracted out to a separate company under the supervision of the insurer. This creates a confusing patchwork array of coverage and rules that can make obtaining proper care difficult.
Project HEAL is a national nonprofit that is focused on creating equitable access to eating disorder treatment. They provide information about navigating insurance issues that may help you throughout this process.