Transmission of Healthcare Data (HL7)

In this final section of the chapter, I will describe HL7, which is both a standards organization and a standard. The “L7” in HL7 refers to layer or level 7 of the OSI stack and relates to the healthcare applications that reside at the application layer.

According to, “Founded in 1987, Health Level Seven International (HL7) is a not-for-profit, ANSI-accredited standards developing organization dedicated to providing a comprehensive framework and related standards for the exchange, integration, sharing, and retrieval of electronic health information that supports clinical practice and the management, delivery and evaluation of health services. HL7’s 2,300+ members include approximately 500 corporate ...

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