1. A method for creating visual association among medical event data, said method including: using at least one computer processor to determine, for each of a plurality of medical events, a predefined association with a medical problem or a medical procedure, wherein each of the plurality of medical events corresponds to at least one of a date and time of occurrence for a patient, wherein the medical procedure is at least one of a medical test, a medical treatment, an imaging procedure and an operation; using the at least one computer processor to store the plurality of medical events to an electronic medical record of the patient in a data store, wherein the predefined association is stored in at least one of medical event data, medical event metadata and at least one table stored at the data store; using the at least one computer processor to retrieve information regarding the plurality of medical events from the data source; using the at least one computer processor and the retrieved information to determine that a first medical event is associated with a second medical event because both medical events include the predefined association with a same medical problem or a same medical procedure; using the at least one computer processor to present the associated first and second medical events in at least one timeline at a user interface operably connected to the at least one computer processor by: using a user interface to display a first symbol representative of the first medical event and a second symbol representative of the second medical event; using the user interface to display an indication of a chronological order of the first medical event and the second medical event; and using the user interface to visually associate the first symbol with the second symbol, thereby indicating that the first medical event is associated with the second medical event, the visual association being separate from the indication of the chronological order of the first medical event and the second medical event.