The Multilevel Healthcare Information Modeling (MLHIM) specifications enables the exchange of syntactically and semantically interoperable data extracts between distributed, independently developed, biomedical databases and clinical applications, promoting syntactic and semantic integration of Translational Research data. This record has been marked as having an Uncertain status as the original homepage (http://mlhim.org) and GitHub repository are no longer available. If you have any information on the current status of this format, please get in touch.