A system and method for ordering healthcare services wherein a list of selectable orders for medical services for a given patient is dynamically generated based on medical information of the patient (e.g., the patient's condition or set of conditions) and presented to a user (e.g., a physician). In one aspect, a system for ordering patient specific healthcare services comprises a user interface that enables a user to input a medical condition of a patient and to select desired medical services from a list of orderable medical services presented to the user; a services database comprising a plurality of predetermined medical services that are each associated with a medical condition; and an engine for compiling the list of orderable medical services from one or more predetermined medical services in the services database that are associated with the input medical conditions of the patient. A clinical knowledge model is used by the engine to identify a medical condition that is potentially associated with a known or identified medical condition of the patient, based upon potential etiology, potential complication, clinical associations, or any combination thereof.