HIE stands for Health Information Exchange. Sometimes the term HIE is used to describe the act of exchanging health information, sometimes HIE is used to describe the infrastructure which enables the exchange to occur and sometimes HIE is used to describe an organization that owns the infrastructure which enables the act of health information exchange. HIE (the act) is supposedly the holy grail of Health Information Technology (HIT) and the enabler of “an EHR for every American by 2014”, which in turn, will bring about better health care at lower costs and, by leveling the playing field, will reduce disparities in care.
The Government, through ONC, has awarded over $547 million to various States to create regional HIE (organizations). The fledgling new State HIEs (the organizations) are busy screening and purchasing HIEs (the platforms) and defining the rules of their local HIE (the act). There are several HIE (platform) vendors, notably Medicity and Axolotl (recently acquired by Ingenix), but even Microsoft and IBM are trying to make inroads into this fairly new market. In a parallel process, ONC is busy defining national standards and regulations for HIE (the act).
There are two basic models for any information exchange and HIE (the act) is no different.
The Centralized Model – All information creators/editors/contributors push their content to a centralized repository, preferably in real time, and all users/readers pull the information on demand from said centralized repository. This is the infamous “database in the sky” which houses every American’s medical records. Conceptually, this is the simplest model to understand. The Government will buy enough hardware to set up clusters upon clusters of databases, define the exact data elements and documents to be stored, assign a national identifier to all of us (physicians too) and finally publish specifications for pushing and pulling data securely. Every EHR vendor and medical information supplier (such as labs and pharmacies) will build the necessary web services and integrate them in their technology and we will all live happily ever after. However, other than the obvious monumental technology challenges involved in maintaining such infrastructure, Americans tend to experience significant discomfort with the concept of Uncle Sam having unfettered access to so much personal information and the obvious privacy issues it raises.