documentation:vocabulary:loinc
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| - | ===== LOINC ===== | + | The page has been moved here: https://github.com/OHDSI/Vocabulary-v5.0/wiki/Vocab.-LOINC |
| - | **Logical Observation Identifiers Names and Codes (LOINC)** is a standardized coding system for laboratory and clinical tests, procedures, observations, surveys, and corresponding results. | + | |
| - | + | ||
| - | ==== Sources ==== | + | |
| - | All LOINC source information is obtained from the following: | + | |
| - | + | ||
| - | 1. LOINC Website (https://loinc.org/downloads/) that is supported by the Regenstrief Institute: | + | |
| - | * LOINC Table Core (Observations and Measurements) | + | |
| - | * LOINC Answers | + | |
| - | * LOINC Multiaxial Hierarchy | + | |
| - | * LOINC Document Ontology | + | |
| - | * LOINC Panels and Forms | + | |
| - | * LOINC Groups | + | |
| - | * LOINC to SNOMED mapping | + | |
| - | * LOINC Replacement Mapping | + | |
| - | 2. The National Library of Medicine (NLM) Website: | + | |
| - | * LOINC To CPT Mapping | + | |
| - | 3. Ordered List ItemLOINC Users” Guide: | + | |
| - | * Manual table of LOINC Classes | + | |
| - | + | ||
| - | ==== Concept Names ==== | + | |
| - | “**long_common_name**” field values are considered to be preferred terms for concept names | + | |
| - | “**consumer_name**”, “**shortname**” and “**relatednames2**” field values reside in the concept synonym table | + | |
| - | + | ||
| - | ==== Standard Concepts ==== | + | |
| - | All LOINC Concepts are Standard Concepts, while Concepts of the Source LOINC Class, LOINC Hierarchy are Classification Concepts. | + | |
| - | ^Source Concept Type^Standard Concept^ | + | |
| - | |LOINC Observations and Measurements|Standard| | + | |
| - | |LOINC Answers|Standard| | + | |
| - | |LOINC Hierarchy|Classification| | + | |
| - | |LOINC Classes|Classification| | + | |
| - | |LOINC Categories|Classification| | + | |
| - | |LOINC Groups|Classification| | + | |
| - | + | ||
| - | ==== Concept Classes ==== | + | |
| - | Concepts in the LOINC vocabulary are assigned Concept Class as following: | + | |
| - | ^Source^Resourced^Concept Class^Description^ | + | |
| - | |LOINC|CLASSTYPE=1|Lab Test|The Universal Lab Order Codes Value Set contains the most frequent lab orders| | + | |
| - | | |CLASSTYPE=2|Clinical Observation|Anything that can be tested, measured, or observed about a patient without removing a specimen| | + | |
| - | | |CLASSTYPE=3|Claims Attachment|Information necessary to adjudicate claims for ambulance, rehabilitation, or emergency room services| | + | |
| - | | |CLASSTYPE=4|Survey|Set of questions on a survey or form| | + | |
| - | | |CLASS|LOINC Class|Similar to the Concept Classes of each LOINC Concept, but more detailed and hierarchical| | + | |
| - | |LOINC Hierarchy|CODE|LOINC Hierarchy|Similar to LOINC Class, but separate hierarchical system| | + | |
| - | |LOINC Answer|AnswerStringID|Answer|Observation result value as an answer to a LOINC Concept| | + | |
| - | + | ||
| - | ==== Domains ==== | + | |
| - | LOINC Concepts can have a Measurement or Observation Domain. This is assigned as following: | + | |
| - | ^Source^Depending on ^Domain^ | + | |
| - | |LOINC|CLASSTYPE=1 or 2|Measurement| | + | |
| - | | |CLASSTYPE=3 or 4|Observation| | + | |
| - | |LOINC Hierarchy|Concept_code>'LP76352-1'|Observation| | + | |
| - | | |Concept_code>='LP76352-1'|Measurement| | + | |
| - | |LOINC Class|Manual|Observation or Measurement| | + | |
| - | |LOINC Answer| |Meas Value| | + | |
| - | + | ||
| - | ==== Relationships ==== | + | |
| - | Relationships are defined within LOINC and between LOINC and CPT and LOINC and SNOMED: | + | |
| - | + | ||
| - | === Internal LOINC relationships === | + | |
| - | - "Is a" relationships between LOINC Concepts and LOINC Hierarchy and LOINC Class Concepts | + | |
| - | - "Has Answer" relationships between LOINC Concepts and LOINC Answer Concepts | + | |
| - | - "Panel contains" relationships between LOINC Concepts | + | |
| - | + | ||
| - | === LOINC to SNOMED relationships === | + | |
| - | These relationships are defined as "LOINC - SNOMED eq" between "LOINC Hierarchy" Concepts and SNOMED Concepts representing the entity that is measured. Note that only a small fraction (1% as of late 2015) are currently mapped. Also, note that some of the mappings seem to confuse the testing for drugs with the drugs themselves. | + | |
| - | + | ||
| - | === LOINC to CPT relationships === | + | |
| - | These relationships are defined as "LOINC - CPT4 eq" between LOINC Lab Test Concepts and SNOMED Concepts. Note that only a small franction (2% as of late 2015) are mapped. | + | |
| - | + | ||
| - | === Hierarchy === | + | |
| - | All internal "Is a" and "Panel contains" relationships participate in the creation of the CONCEPT_ANCESTOR table, creating an internal hierarchy within LOINC not connected to the larger Measurement or Observation Domain space. | + | |
| - | + | ||
documentation/vocabulary/loinc.1556780975.txt.gz · Last modified: 2019/05/02 07:09 by ptalapova
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