Hl7 - Glue For An Electronic Health Record (ehr)

Inception of HL7 the short form of Health Level Seven has become a boon for health industries

. HL7 solutions are widely used for supporting clinical and administrative electronic data exchange by healthcare industries. HL7 solutions are widely used in US as well as in more than 20 countries worldwide. HL7 started from a simple messaging system but now with its latest version 3 it covers all health domains thus there is huge increase in Healthcare software development by many companies. Healthcare industries are facing many challenges and HL7 solutions are meant for solving them and giving a bright future to healthcare industries. Here we will see how it serves the purpose of Glue for an electronic Health Record in any healthcare industry.

HL7 is used as glue that holds together each and every piece of electronic health record of tomorrow or future. By immense growth that our world has we expect more and more from healthcare standards. Aging population will demand higher and higher standards of healthcare by each passing day. Considering todays situation of healthcare industries a key enabler that is delivered by healthcare is to provide the right information at the right time to clinicians enabling them to make quick and better decisions. Better and quick decisions play an very important role considering todays diseases and situations. Thus Hl7 allows better communication and is data protocol allowing information to be gathered by care providers and service providers in one application to be accessible to other care providers and service providers in the other applications. This access and interchange of information to between different service and care providers make an effective collaborative environment and bettering the challenges.

History of HL7:

HL7 was developed under not for profit purpose by HL7 Inc, a ANSI accredited development organisation.

The messaging structure of HL7:

HL7 messages have the following structure:

Composition of segments is what makes HL7 messages. ( they are separated by a carriage return character- hexadecimal OA)

The segments of HL7 are composed of fields ( they are separated by a field separator-typically the character I)

The fields of HL7 are composed of components ( they are separated by a components separator-typically the ^ character)

The components of HL7 are composed of subcomponents ( they are separated by a subcomponents separator typically the character &)

The fields of HL7 may repeat ( they are separated by a repetition separator typically the ~ character)

Scope of HL7 Version 2

HL7 V2 covers events, segments and messages for a diverse range of health information domains including:

patient administration

pathology/radiology order entry and results reporting

medication management (including prescribing, dispensing, and administration

document management

appointment scheduling

primary care referral

problem oriented record

laboratory automation

master files (code tables)

HL7 Version 3 A new beginning with new methodology

HL7 V3 represents a departure from the earlier version of V2 approach. Based on reference information model (RIM), V3 uses a well-defined methodology.

by:Dylan Rodriguez

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