building part intensive care unit 2021-04-05T16:38:47.162Z A building part which has been constructed to support the provision of intensive care medicine to patients with severe or life-threatening illnesses and injuries. An ICU could be a part-of a hospital, but it would not be a subclass of a hospital. That's even reflected in the textual definition. THEREFORE parent class changed to building part. Could be in a hospital and related to some particular hospital department provides.