Labcorp LOINC® Map

LOINC® (Logical Observation Identifiers Names and Codes) is a set of universal names and ID codes for identifying laboratory tests in electronic laboratory report messages. It was designed to facilitate the exchange and correlation of results for clinical care, outcomes management, and research. Currently, most laboratories and clinical services use HL7 to send laboratory results electronically from their reporting system (LIS) to the provider’s care system (EHR).

The tests in these messages, however, are usually identified by means of the laboratory’s internal (or local) code values. Certain EHR systems may not be set up to understand and/or equate the results received from multiple sources if the local codes are unique to each sender. The LOINC data base was developed to address this challenge by providing a standard vocabulary for the universal identification and description of laboratory tests for electronic messaging.

For LabCorp clients that need an Excel version of the LOINC® Map, please contact the Corporate Coding Resources department at [email protected].

The LOINC® codes are copyright ©1994-2020, Regenstrief Institute Inc and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or noncommercial purpose, subject to the terms and conditions in the LOINC® and RELMA® Terms of Use found at Additional information regarding LOINC® codes can be found at, including the LOINC Manual, which can be downloaded at


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