HL7 Terminology (THO)
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HL7 Terminology (THO), published by HL7 International - Vocabulary Work Group. This guide is not an authorized publication; it is the continuous build for version 5.5.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/UTG/ and changes regularly. See the Directory of published versions

NamingSystem:

Official URL: http://terminology.hl7.org/NamingSystem/v3-loinc Version: 3.1.0
Active as of 2022-12-15 Responsible: LOINC and Health Data Standards, Regenstrief Institute, Inc. Computable Name: LOINC

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.

Summary

Defining URLhttp://terminology.hl7.org/NamingSystem/v3-loinc
Version3.1.0
NameLOINC
TitleLogical Observation Identifier Names and Codes (LOINC)
Statusactive
Definition

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.

PublisherLOINC and Health Data Standards, Regenstrief Institute, Inc.

Identifiers

TypeValuePreferredComment
OID2.16.840.1.113883.6.1true
URIhttp://loinc.orgtrue
Otherhttp://loinc.org/rdf/falseThis uniqueId should have a type of 'iri-stem', which we will change once https://jira.hl7.org/browse/FHIR-39604 has been merged.

History

DateActionAuthorCustodianComment
2023-05-08reviseGaurav VaidyaITSRequest to add IRI stems to LOINC; up-364
2020-11-03reviseReuben DanielsVocabulary WGUpdated metadata to align with HTA and associated UTG external CodeSystem
2020-10-09reviseReuben DanielsVocabulary WGFixed title extension URL to be consistent with latest Publisher