As a critical access hospital can you bill for inpatient stay and the emergency room on the same day. Our hospital had a inpatient that started having chest pain and provider could not get to the hospital at that time to see the patient so asked the emergency room provider to see the patient, the er provider requisted that the patient be discharged to the emergency room, which was done with out talking to the ur nurse, and the patient was transfered with a stemi. Can you charge for emergency room stay when admitted to inpatient first and had been a inpatient for 48 hours or does the three day window apply.