Hello I have a psychologist who hires other social workers to go to the clients homes and do therapy sessions there. She gets paid by the state for this, but first she has to send a claim to the client's insurance company. Once their insurance rejects it, she can then send the rejection to the state for reimbursement. But my question is, how would you put it on the claim form to go to the insurance company first? Do you just put 12 for POS and just put the patient's address in box 32 and the payment address in box 33? Also are the psychotherapy codes the same? 90791 for initial, 90837 for a 60 min, etc? I've never billed for home visits before so any help would be appreciated. Thank you!