HL7 Health level 7

HL7 Health level 7

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  Medical Informatics Assignment Topic: Health level Seven/ HL7 Submitted to: Sir adeel Kandhar submitted by: Maham Yousuf Roll # 110 dpt 17
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  Content! • Whatis HL7? • What does it stand for • HL7 Mission • HL7 contains message standards • HL7 in Healthcare Management System • Standards • Limitations of HL7
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  What is HL7? • Health Level-7 or HL7 refers to a set of international standards for transfer of clinical and administrative data between Hospital information systems. These standards focus on the application layer, which is "layer 7" in the OSI model. The HL7 standards are produced by the Health Level Seven International, an international standards organization, and are adopted by other standards issuing bodies such as American National Standards Institute and International Organization for Standardization • 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.
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  What does “HL7”stand for? A domain-specific, common protocol for the exchange of health care information. 7 Application 6 Presentation 4 Transport 3 Network 2 Data Link 1 Physical Communication 5 Session Function
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  Cont.. Application Typeof network communication (e-mail, telnet, FTP, HL7) Presentation Data conversion, encryption Session Controlling dialogues (sessions). Establishing, terminating and restarting connection. Transport Network Data-Link Physical TCP/IP Routing, reliable data transport between two computers Network adapter: Ethernet, wireless Ethernet Physical link: Ethernet cable, RS-232, optical link
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  HL7 Mission Statement • To provide standards for the exchange, management and integration of data that supports clinical patient care and the management, delivery and evaluation of healthcare services. • ... the complete ‘life cycle’ of a standards specification -- development, adoption, market recognition, utilization and adherence.
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  Cont.. • HL7provides standards for interoperability that improve care delivery, optimize workflow, reduce ambiguity and enhance knowledge transfer among all of our stakeholders, including healthcare providers, government agencies, the vendor community, fellow SDOs and patients. In all of our processes we exhibit timeliness, scientific rigor and technical expertise without compromising transparency, accountability, practicality, or our willingness to put the needs of our stakeholders first.
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  HL7 contains messagestandards covering: • Patient Administration • Orders for Clinical Services and Observations, Pharmacy, Nutrition and Supplies order entry • Patient Accounting and Charges • Observation Reporting • Document Management Services • Appointment Scheduling • Laboratory Automation • Personnel Management • …
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  HL7 in Healthcare Management System
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  HL7 STANDARDS Hospitalsand other healthcare provider organizations typically have many different computer systems used for everything from billing records to patient tracking. All of these systems should communicate with each other (or "interface") when they receive new information but not all do so. HL7 specifies a number of flexible standards, guidelines, and methodologies by which various healthcare systems can communicate with each other. Such guidelines or data standards are a set of rules that allow information to be shared and processed in a uniform and consistent manner. These data standards are meant to allow healthcare organizations to easily share clinical information. Theoretically, this ability to exchange information should help to minimize the tendency for medical care to be geographically isolated and highly variable. • HL7 version 2.x • HL7 version 3 • Fast Healthcare Interoperability Resources (FHIR) • Clinical Document Architecture - ISO/HL7 27932
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  Benefits of V3to Providers Deals with complexity of the HC environment: Facilitates integration of heterogeneous systems  Increases choices of innovative best-of-breed solutions  Provides support for legacy systems  Allows reliable verification of vendors’ conformance claims
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  Benefits of V3to Vendors  Provides improved protocol for interconnecting heterogeneous systems Reduces installation effort – reduces site-specific negotiations – simplifies interface programming Promotes vendor specialization by allowing segmentation of product lines into niche market spaces
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  Limitaions • Thelist below is some of the functionality that is not provided or supported: • Security/Access Control – HL7 does not provide for the enforcement of a user’s security policies. In addition, HL7 does not specify a specific encryption method. • Privacy/Confidentiality – HL7 does not address this issue and makes no assumption about how the data will be used at the source or destination of a message. • Accountability/Audit trails – HL7 does not attempt to define possible transaction processing features needed in a user’s environment.