Hospital Information Systems provide a common source of information about a patient’s health history. The system has to keep data in a secure place and controls who can reach the data in certain circumstances. These systems enhance the ability of health care professionals to coordinate care by providing a patient’s health information and visit history at the place and time that it is needed. Patient’s laboratory test information also includes visual results such as X-ray, which may be reachable by professionals. HIS provide internal and external communication among health care providers.The HIS may control organizations (a Hospital in this case), official documentations, financial situation reports, personal data, utilities and stock amounts. The HIS also keeps in a secure place: patients’ information, patients’ medical history, prescriptions, operations and laboratory test results.The HIS may protect organizations, handwriting errors, overstock problems, conflict of scheduling personnel, and official documentation errors like tax preparations errors.