The use case description for the check-in patient use case in healthcare system is Name: Check-in patient Summary: The staff checks in a patient to the system. Actors: Staff, Health Insurance Pre-conditions: None Description 1. The staff checks if a patient has an appointment 2. If the patient has an appointment, the staff enters or updates patient information to the system, which include patient name, address, phone number, social security number and health insurance System sends the patient's health insurance information to the health insurance. If the health insurance approves the patient's doctor visit, the health insurance confirmation number is created and sent back to the healthcare system. System adds the patient name to a list of patients being served by a doctor 3. 4. Alternatives . If the system cannot find the patient's appointment, the staff cancels check-in. If the health insurance denies the patient's doctor visit request and patient does not want to pay all cost, the staff cancels check-in. If the health insurance denies and the patient wants to pay all cost, staff adds the patient name to a list of patients being served by a doctor . Post-conditions: The staff has checked in a patient. State your assumptions if necessary