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. 2023 Dec 22;11:e49301. doi: 10.2196/49301

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©Julian D Schwab, Silke D Werle, Rolf Hühne, Hannah Spohn, Udo X Kaisers, Hans A Kestler. Originally published in JMIR Medical Informatics (https://medinform.jmir.org), 22.12.2023.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Medical Informatics, is properly cited. The complete bibliographic information, a link to the original publication on https://medinform.jmir.org/, as well as this copyright and license information must be included.

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Exemplary composition of a LOINC term for nausea. A LOINC term is defined as the combination of the LOINC code, a unique identifier, and the FSN, which consists of 5-6 parts, including the component or analyte, the observed property, the time of the measurement, the type of system, the scale of the measurement, and sometimes also the method used. The FSN parts are listed sequentially, separated by “:”. “Nausea [Presence]” is one of the additional names, a long common name, which must be unique. LOINC: Logical Observation Identifiers, Names, and Codes.