{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T02:52:57Z","timestamp":1775011977295,"version":"3.50.1"},"reference-count":44,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[2023,1,23]],"date-time":"2023-01-23T00:00:00Z","timestamp":1674432000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,3,16]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>Convert the Medical Information Mart for Intensive Care (MIMIC)-IV database into Health Level 7 Fast Healthcare Interoperability Resources (FHIR). Additionally, generate and publish an openly available demo of the resources, and create a FHIR Implementation Guide to support and clarify the usage of MIMIC-IV on FHIR.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>FHIR profiles and terminology system of MIMIC-IV were modeled from the base FHIR R4 resources. Data and terminology were reorganized from the relational structure into FHIR according to the profiles. Resources generated were validated for conformance with the FHIR profiles. Finally, FHIR resources were published as newline delimited JSON files and the profiles were packaged into an implementation guide.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The modeling of MIMIC-IV in FHIR resulted in 25 profiles, 2 extensions, 35 ValueSets, and 34 CodeSystems. An implementation guide encompassing the FHIR modeling can be accessed at mimic.mit.edu\/fhir\/mimic. The generated demo dataset contained 100 patients and over 915\u00a0000 resources. The full dataset contained 315\u00a0000 patients covering approximately 5\u00a0840\u00a0000 resources. The final datasets in NDJSON format are accessible on PhysioNet.<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>Our work highlights the challenges and benefits of generating a real-world FHIR store. The challenges arise from terminology mapping and profiling modeling decisions. The benefits come from the extensively validated openly accessible data created as a result of the modeling work.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The newly created MIMIC-IV on FHIR provides one of the first accessible deidentified critical care FHIR datasets. The extensive real-world data found in MIMIC-IV on FHIR will be invaluable for research and the development of healthcare applications.<\/jats:p><\/jats:sec>","DOI":"10.1093\/jamia\/ocad002","type":"journal-article","created":{"date-parts":[[2023,1,23]],"date-time":"2023-01-23T13:53:04Z","timestamp":1674481984000},"page":"718-725","source":"Crossref","is-referenced-by-count":27,"title":["MIMIC-IV on FHIR: converting a decade of in-patient data into an exchangeable, interoperable format"],"prefix":"10.1093","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8211-9686","authenticated-orcid":false,"given":"Alex M","family":"Bennett","sequence":"first","affiliation":[{"name":"Child Health Evaluative Sciences, The Hospital for Sick Children , Toronto, Ontario, Canada"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8349-6798","authenticated-orcid":false,"given":"Hannes","family":"Ulrich","sequence":"additional","affiliation":[{"name":"Institute for Medical Informatics and 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