The reception and the ambulance garage are admission departments. They bring new patients to your hospital.
These patients are then treated within the medical departments, such as: the examination room, the operating room or the MRI department. Cash is generated from these areas, once patient goes through them.
After patients have been treated, they need to recover in one of the care departments such as the ward, before they can be released from the hospital.
The break room is a special type of department that restores stamina to staff.
The pharmacy also generates cash but doesn’t require patients.