Resources to Help Map Local Terms to LOINC

Regenstrief publishes several key resources to help map your local terms to LOINC codes

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search.loinc.org

If you are curious about LOINC, and just want to explore, the best place to start is the web LOINC search application. You can find it at:

https://search.loinc.org

search.loinc.org screen

This browser-based application is great for searching and identifying LOINC codes, and has a simple yet powerful interface.

RELMA

For mapping local codes to LOINC, we recommend downloading the full version of RELMA (Regenstrief LOINC Mapping Assistant).

Laptop with RELMA

RELMA's key features:

Mapping a Large Laboratory Test Catalog

If you are mapping a large set of local laboratory test codes to LOINC, we recommend starting with the LOINC Top 2000+ Lab Observations and Mapper's Guide. The Top 2000+ list represents about 98% of the test volume carried by three large organizations that mapped all of their laboratory tests to the LOINC codes.

Mapping Validity Checker

Premium service for LOINC members only: Send us your local term to LOINC mappings file and we'll send you back a report highlighting potential problems.

More Info

Other Files to Help You Use LOINC

LOINC has also created a variety of accessory files to help with the mapping effort. Below are summaries these items, which can be downloaded separately.

  • LOINC Multiaxial Hierarchy File: An export of the LOINC Multi-axial hierarchy available in a computable format and distributed in Microsoft Excel format.
  • LOINC Panels and Forms File: A package of key laboratory and clinical panels and forms (e.g. Consumer Health panels, HL7 Clinical Genetics panels, and Newborn Screening panels) distributed in Microsoft Excel format. The file contains:
    • Hierarchical structure of the panels
    • Individual LOINC terms within each panel
    • Structured answer lists for a given LOINC term where applicable
  • LOINC Document Ontology File: An export of the LOINC terms in the Document Ontology class (DOC.ONTOLOGY) and the values they contain from each axis of the Document Ontology.
    • The axis values are identified by LOINC Part Numbers and classified by their type (Setting, TypeOfService, etc).