what is the different between information technology '' IT '' , and health information management ''HIM'' ?

Information technology used to store, retrieve, transmit and manipulate data with the application of computerization and other information distribution technologies While Health Information Management is based on IT and created for the purpose of Handling and Maintenance of all type of health records of a health facility, of a city, even now of a country.HIMS provide access to old record with in seconds in any where with online access.
it enable us to generate indicator base reports as we desire it helps us to analyze the performance, income, workload,Disease trend,demand of logistics, medicines, human resources etc.future planning is also based on information system.Use of information for evidence based decision making is very necessary and it only possible if there is some type of IMS.