The problem is that psychiatrists aren't really interested in much other than prescribing medications. Therapy is left to those with degrees in clinical psychology or social work.

And from what I have experience with--the eating disorder community--many professionals actually discredit the DSM's categorization (though it has much improved in the DSM-5) because of its insistence on weight for diagnoses of anorexia nervosa. But great American insurance often will pay for nothing if the patient does not have either AN or BN leading to patients being "not sick enough" for treatment when really, they need it as soon as possible for recovery to be most successful.