title: Medical necessity: its impact in managed mental health care.
authors.affiliation: Health Systems Research, Inc., Washington, DC 20036, USA.
authors.forename: W E
authors.initials: WE
authors.lastname: Ford
mesh_terms: D006279:Health Maintenance Organizations / Q000191:economics / Q000706:statistics & numerical data*; D006300:Health Services Misuse / Q000191:economics; D006801:Humans; D001523:Mental Disorders / Q000175:diagnosis; D008605:Mental Health Services / Q000191:economics / Q000706:statistics & numerical data*; D011569:Psychiatric Status Rating Scales; D014481:United States