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Terminology owner/maintenance organisation

Name, contact details, website
Regenstrief Institute

Formal name of the code system

Logical Observation Identifiers, Names and Codes

Short name or abbreviation of the code system name

Technical identifier/s of the code system (OIDs, URNs etc)

OID - 2.16.840.1.113883.6.1


Note:  this terminology requires identification of the code system and the version of the code system being used.   The identifiers shown here are for the code system (and do not indicate the version)

Scope/domain statement for the code system

(Official or from HTA)

"LOINC provides a set of universal names and ID codes for identifying laboratory and clinical test results.1,2 LOINC facilitates the exchange and pooling of results, such as blood hemoglobin, serum potassium, or vital signs, for clinical care, outcomes management, and research. LOINC's universal identifiers (names and codes) can be used in the context of order and observation exchanges between information systems that use syntax standards such as HL73, CEN TC251, ISO TC215, ASTM4, and DICOM. Specifically, the identifier can be used as the coded value for an observation in any other standard that uses the observation/observation value paradigm, whether messages, documents, application programming interface (API), etc. For example, LOINC codes are used widely in the OBX segment “Observation Identifier” field (OBX-3) of an ORU HL7 (HL7 version 2.x or ASTM 1238-9410) message that may be sent between a Clinical Laboratory Information Management Systems (LIMS) and Electronic Health Record Systems (EHR).5, 6 In this way, LOINC codes provide “universal” identifiers that allow the exchange of clinical data between heterogeneous computing environments."

For more information, see here

Link to information about the code system - including how to obtain the content

To search, download etc, see here

Arrangement or agreements with HL7 for use of content

See IP information below

Per Section 10 of the LOINC license any such product or service utilizing LOINC includes the following notice:

"This material contains content from LOINC ( LOINC is copyright © 1995-2020, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at LOINC® is a registered United States trademark of Regenstrief Institute, Inc."

IP Information and Licensing Information

Per the LOINC License "Permission is hereby granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the Licensed Materials for any commercial or non-commercial purpose, subject to the following terms and conditions"

For terms and conditions see here for more details

License was updated as of

HL7 users of this information - which HL7 products use this link (if known)

HL7 users of this information – V2.x, V3, CDA, FHIR

Process to request content change

Versioning information can be found here 

Other useful Information

Information current as at (date)

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