HL7 Terminology (THO)
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HL7 Terminology (THO), published by HL7 International - Vocabulary Work Group. This guide is not an authorized publication; it is the continuous build for version 5.4.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/UTG/ and changes regularly. See the Directory of published versions

: Mondo Disease Ontology - XML Representation

Active as of 2022-11-18

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<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="MONDO"/>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml"><p>This case-sensitive code system <code>http://purl.obolibrary.org/obo/mondo.owl</code> defines codes, but no codes are represented here</p></div>
  </text>
  <url value="http://purl.obolibrary.org/obo/mondo.owl"/>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.3.9216"/>
  </identifier>
  <version value="1.0.0"/>
  <name value="MONDO"/>
  <title value="Mondo Disease Ontology"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2022-11-18T00:00:00-00:00"/>
  <publisher value="The Monarch Initiative"/>
  <contact>
    <name value="The Monarch Initiative; Nicole Vasilevsky"/>
    <telecom>
      <system value="url"/>
      <value value="http://monarchinitiatve.org/"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="nicole@tislab.org"/>
    </telecom>
  </contact>
  <description
               value="The Mondo Disease Ontology is a semi-automatically constructed ontology that merges in multiple disease resources to yield a coherent merged ontology that contains cross-species disease terminology.

Numerous sources for disease definitions and data models currently exist, which include HPO, OMIM, SNOMED CT, ICD, PhenoDB, MedDRA, MedGen, ORDO, DO, GARD, etc; however, these sources partially overlap and sometimes conflict, making it difficult to know definitively how they relate to each other. This has resulted in a proliferation of mappings between disease entries in different resources; however mappings are problematic: collectively, they are expensive to create and maintain. Most importantly, the mappings lack completeness, accuracy, and precision; as a result, mapping calls are often inconsistent between resources. The UMLS provides intermediate concepts through which other resources can be mapped, but these mappings suffer from the same challenges: they are not guaranteed to be one-to-one, especially in areas with evolving disease concepts such as rare disease.

In order to address the lack of a unified disease terminology that provides precise equivalences between disease concepts, we created Mondo, which provides a logic-based structure for unifying multiple disease resources.

Mondo’s development is coordinated with the Human Phenotype Ontology (HPO), which describes the individual phenotypic features that constitute a disease. Like the HPO, Mondo provides a hierarchical structure which can be used for classification or “rolling up” diseases to higher level groupings. It provides mappings to other disease resources, but in contrast to other mappings between ontologies, we precisely annotate each mapping using strict semantics, so that we know when two disease names or identifiers are equivalent or one-to-one, in contrast to simply being closely related.

For more information, see [https://mondo.monarchinitiative.org/](https://mondo.monarchinitiative.org/)"/>
  <copyright
             value="Copyrights permitted under terms specified by [Creative Commons Attribution 4.0 International (CC BY 4.0) ](https://creativecommons.org/licenses/by/4.0/legalcode).

Consistent with the terms of CC BY 4.0, HL7 is permitted to  share, copy and redistribute the material in any medium or format and adapt, remix, transform, and build upon the material for its purposes as long as the CC BY 4.0 license terms are upheld.  HL7 must must give appropriate credit, provide a link to the license, and indicate if changes were made. HL7 may do so in any reasonable manner, but not in any way that suggests the licensor endorses HL7 or it's use. And HL7 may not apply legal terms or technological measures that legally restrict others from doing anything the license permits."/>
  <caseSensitive value="true"/>
  <content value="not-present"/>
</CodeSystem>