I wonder if you are being given misinformation or you may be misunderstanding what they are telling you. I cannot imagine insurance preferring to pay for 4-6 weeks of inpatient just for ECT when really only the first few need to be done inpatient and the rest can be done outpatient. I honestly have never heard of any facility anymore that would even keep a patient that long unless it was a long-term residential facility (which usually don't do ECT) except perhaps state mental hospitals (which I would never go into). Are you paying completely out of pocket? I just don't know of any insurance company that would agree to that arrangement.