Resources to Help Map Local Terms to LOINC
For mapping local codes to LOINC, we recommend downloading the full version of RELMA (Regenstrief LOINC Mapping Assistant).
RELMA's key features:
- Workflow tailored for mapping local codes to LOINC codes
- Multilingual searching
- Links to a community repository of local tests mapped to LOINC
- Interface for submitting new term requests to Regenstrief
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.
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).