What is HL7
HL7 is the universal user-friendly standard that enables communication between two or more healthcare management applications. The health-related information will be transferred in the form of one or more HL7 messages such as patient records and billing information.
The HL7 interoperability standard is often called the nonstandard standard since it does not consider any specific part as special and, hence, there is no standard business or clinical model for clinical interaction.
HL7 development needs the involvement of clinical application analysts, integration specialists, application programmers, and system analysts.
What does HL7 stand for?
HL7 (Health Level Seven) symbolizes a 7-layer ISO communication model
- Physical: Connects the entity to the transmission media
- Data Link: Provides error control between adjacent nodes
- Network: Routes the information in the network
- Transport: Provides end-to-end communication control
- Session: Handles problems that are not communication issues
- Presentation: Converts the information
- Application: Provides different services to the applications
1-4 deals with Communication; 5-7 deals with Function. All these layers are used by the HL7 interface engine for the transfer and retrieval of HL7 data.
