Ok, so basically the patient is required to get an impatient stay authorized, and usually they give 48-72 hours to do that.... correct? Hospital appealed, denied and your services are also being denied since they were within that inpatient time period.. I'd say you can try and appeal the professional charges, sending in a letter with something that may have been missed as to why there was no authorization done and hope for best. Otherwise, this is a patient requirement so you can and should bill the balance to the patient. Sometimes patient's have a better chance of an appeal in this situation.