User:Jkonter1/sandbox

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Jay's HL7 Information Page[edit]

This Wiki contains subject material on HL7 collected by Jay Konter

Health Level Seven (HL7), is a non-profit organization involved in the development of international healthcare informatics interoperability standards.[1] "HL7" also refers to some of the specific standards created by the organization (e.g., HL7 v2.x, v3.0, HL7 RIM).[2]

HL7 and its members provide a framework (and related standards) for the exchange, integration, sharing, and retrieval of electronic health information. The 2.x versions of the standards, which support clinical practice and the management, delivery, and evaluation of health services, are the most commonly used in the world.[3]

Organization[edit]

HL7 is an international community of healthcare subject matter experts and information scientists collaborating to create standards for the exchange, management and integration of electronic healthcare information.[4] The organizational structure of HL7 Inc. is as follows:[citation needed]

  • The organization is managed by a Board of Directors, which comprises 10 elected positions and three appointed positions.

Origin[edit]

HL7 was founded in 1987 to produce a standard for hospital information systems. HL7, Inc. is a standards organization that was accredited in 1994 by the American National Standards Institute (ANSI).[5]

The name "Health Level-7"[edit]

The name "Health Level-7" is a reference to the seventh layer of the ISO OSI Reference model also known as the application layer. The name indicates that HL7 focuses on application layer protocols for the health care domain, independent of lower layers. HL7 effectively considers all lower layers merely as tools.[1]

HL7 standards[edit]

Most HL7 standards are not Open Standards, depending on the definition, since the current HL7 International IP Policy[6] requires that an implementer or user be an organizational member of HL7, which requires annual payment of a fee. The revenue model and business plan of HL7 is discussed in HL7 Strategic Initiatives and Implementation Proposal.[7] However, since the earlier policy as described in the Bylaws of October 2002[8] placed the HL7 protocol specifications in the Public Domain, and under 17 USC § 102[9] there is no copyright protection for an "idea, procedure, process, system, method of operation, concept, principle, or discovery", this revised policy may not be enforceable. As of Sept 4, 2012, the HL7 Board of Directors has announced its intention to relax this policy and allow free access and implementation to promote adoption and interoperability,[10] as described in their press release.[11][12]

HL7 develops conceptual standards (e.g., HL7 RIM), document standards (e.g., HL7 CDA), application standards (e.g., HL7 CCOW), and messaging standards (e.g., HL7 v2.x and v3.0). Messaging standards are particularly important because they define how information is packaged and communicated from one party to another. Such standards set the language, structure and data types required for seamless integration from one system to another.[13]

The Reference Information Model (RIM) and the HL7 Development Framework (HDF) are the basis of the HL7 Version 3 standards development process. RIM is the representation of the HL7 clinical data (domains) and the life cycle of messages or groups of messages.[14] HDF is a project to specify the processes and methodology used by all the HL7 committees for project initiation, requirements analysis, standard design, implementation, standard approval process, etc.[15]

HL7 standards:[16]

  • Version 2.x Messaging Standard – an interoperability specification for health and medical transactions
  • Version 3 Messaging Standard – an interoperability specification for health and medical transactions, based on RIM
  • Version 3 Rules/GELLO – a standard expression language used for clinical decision support
  • Arden Syntax – a grammar for representing medical conditions and recommendations as a Medical Logic Module (MLM)
  • Clinical Context Object Workgroup (CCOW) – an interoperability specification for the visual integration of user applications
  • Claims Attachments – a Standard Healthcare Attachment to augment another healthcare transaction
  • Clinical Document Architecture (CDA) – an exchange model for clinical documents, based on HL7 Version 3
  • Electronic Health Record (EHR) / Personal Health Record (PHR) – in support of these records, a standardized description of health and medical functions sought for or available
  • Structured Product Labeling (SPL) – the published information that accompanies a medicine, based on HL7 Version 3

HL7 version 2.x[edit]

The HL7 version 2 standard has the aim to support hospital workflows. It was originally created in 1989.[17]

V2.x Messaging

The following is an example of an admission record. MSH is the header record, PID the Patient Identity, etc. The 6th field for the PID record is the patients name.

MSH|^~\&|MegaReg|XYZHospC|SuperOE|XYZImgCtr|20060529090131-0500||ADT^A01^ADT_A01|01052901|P|2.5 EVN||200605290901||||200605290900 PID|||56782445^^^UAReg^PI||KLEINSAMPLE^BARRY^Q^JR||19620910|M||2028-9^^HL70005^RA99113^^XYZ|260 GOODWIN CREST DRIVE^^BIRMINGHAM^AL^35 209^^M~NICKELL’S PICKLES^10000 W 100TH AVE^BIRMINGHAM^AL^35200^^O |||||||0105I30001^^^99DEF^AN PV1||I|W^389^1^UABH^^^^3||||12345^MORGAN^REX^J^^^MD^0010^UAMC^L||678 90^GRAINGER^LUCY^X^^^MD^0010^UAMC^L|MED|||||A0||13579^POTTER^SHER MAN^T^^^MD^0010^UAMC^L|||||||||||||||||||||||||||200605290900 OBX|1|NM|^Body Height||1.80|m^Meter^ISO+|||||F OBX|2|NM|^Body Weight||79|kg^Kilogram^ISO+|||||F AL1|1||^ASPIRIN DG1|1||786.50^CHEST PAIN, UNSPECIFIED^I9|||A

HL7 v2.x has allowed for the interoperability between electronic Patient Administration Systems (PAS), Electronic Practice Management (EPM) systems, Laboratory Information Systems (LIS), Dietary, Pharmacy and Billing systems as well as Electronic Medical Record (EMR) or Electronic Health Record (EHR) systems. Currently, HL7’s v2.x messaging standard is supported by every major medical information systems vendor in the United States.[18]

HL7 version 3[edit]

The HL7 version 3 standard has the aim to support all healthcare workflows. Development of version 3 started around 1995, resulting in an initial standard publication in 2005. The v3 standard, as opposed to version 2, is based on a formal methodology (the HDF) and object-oriented principles.

RIM - ISO/HL7 21731


The American Recovery and Reinvestment Act of 2009 (ARRA) and Health Information Technology for Economic and Clinical Health Act (HITECH) legislation specified HL7 versions 2.3.1 and 2.5.1, and the HL7 Continuity of Care Document (CCD), as the healthcare standards to meet certain certification requirements.[19]

See also[edit]

Referencessssss[edit]

  1. ^ a b "About Health Level Seven". Health Level Seven.
  2. ^ "Healthcare Interoperability Glossary". Corepoint Health.
  3. ^ Shaver, Dave. "The HL7 Evolution - Comparing HL7 Versions 2 and 3" (PDF). Corepoint Health. Retrieved 16 February 2012.
  4. ^ "Health Level Seven International". HL7.
  5. ^ http://www.ansi.org/ ANSI
  6. ^ "HL7 International IP Policy".
  7. ^ "HL7 Strategic Initiatives and Implementation Proposal".
  8. ^ "Bylaws of Health Level Seven, Inc. (as still posted 2004/07/08)".
  9. ^ "17 USC § 102 Subject matter of copyright".
  10. ^ Lucas Mearian (Sept 4, 2012). "HL7 e-health information-sharing standard to be free". Computerworld. {{cite web}}: Check date values in: |date= (help)
  11. ^ "HL7 Standards Soon to be Free of Charge" (PDF). HL7. Sept 4, 2012. {{cite web}}: Check date values in: |date= (help)
  12. ^ "Free IP FAQ". HL7. Sept 4, 2012. {{cite web}}: Check date values in: |date= (help)
  13. ^ "California Clinical Data Project: CALINX Standards". California HealthCare Foundation. March 2011.
  14. ^ Cite error: The named reference RIM was invoked but never defined (see the help page).
  15. ^ "HL7 Development Framework (HDF)". HL7.
  16. ^ "HL7 Standards". HL7.
  17. ^ "HL7 FAQs". HL7.
  18. ^ "Standards Organizations". Assistant Secretary for Planning and Evaluation (ASPE), Health and Human Services (HHS).
  19. ^ "Versions of the HL7 Standard". Corepoint Health.

External links[edit]

Critical reviews[edit]

Open source tools[edit]

There are a number of FOSS based tools that can foster worldwide adoption of the HL7 standards

Category:Health standards Category:Standards organizations Category:International standards Category:Multi-agent systems Category:ANSI standards

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