This page lists UMLS Metathesaurus data elements and traces them back to the specific source data that populates them.
VSAB:MSH2023_2022_07_27
There were no changes to the original file format or to the Metathesaurus source processing.
| Descriptor Records | Qualifier Records | Supplementary Concept Records | Hierarchical Terms | |
|---|---|---|---|---|
| CODE | DescriptorUI | QualifierUI | SupplementalRecordUI | Identifier generated during source processing, in the format U###### |
| SAUI | Not applicable |
Not applicable | Not applicable | Not applicable |
| SCUI | ConceptUI | ConceptUI | ConceptUI | Not applicable |
| SDUI | DescriptorUI | QualifierUI | SupplementalRecordUI | Identifier generated during source processing, in the format U###### (same as CODE) |
| Term Type | Description | Origin |
|---|---|---|
| CE | Entry term for a Supplementary Concept | CODE = SupplementaryRecordUI STR = value of <TermList><Term><String> SCUI = ConceptUI SDUI = SupplementaryRecordUI File: supp*.xml TTY = CE is assigned to records where: RecordPreferredTermYN = "N" ConceptPreferredTermYN = "N" IsPermutedTermYN = "N" |
| DEV | Descriptor entry version | CODE = DescriptorUI STR = value of <TermList><Term><EntryVersion> SCUI = ConceptUI SDUI = DescriptorUI File: desc*.xml |
| DSV | Descriptor sort version | CODE = DescriptorUI STR = value of <TermList><Term><SortVersion> SCUI = ConceptUI SDUI = DescriptorUI File: desc*.xml |
| ET | Entry term | CODE = DescriptorUI STR = value of <TermList><Term><String> SCUI = ConceptUI SDUI = DescriptorUI File: desc*.xml TTY = ET is assigned to records where: RecordPreferredTermYN = "N" ConceptPreferredTermYN = "N" IsPermutedTermYN = "N" |
| HS | Short/alternate form of hierarchical term | CODE = Identifier generated during source
processing, in the format U###### STR = Created from data provided by MeSH; not released in xml format SCUI = Not populated SDUI = Identifier generated during source processing, in the format U###### This data is added during Metathesaurus source processing |
| HT | Hierarchical term | CODE = Identifier generated during source
processing, in the format U###### STR = Created from data provided by MeSH; not released in xml format SCUI = Not populated SDUI = Identifier generated during source processing, in the format U###### This data is added during Metathesaurus source processing |
| MH | Main heading | CODE = DescriptorUI STR = value of <TermList><Term><String> SCUI = ConceptUI SDUI = DescriptorUI File: desc*.xml TTY = EP is assigned to records where: RecordPreferredTermYN = "Y" ConceptPreferredTermYN = "Y" IsPermutedTermYN = "N" |
| N1 | Chemical Abstracts Service Type 1 name of a chemical | CODE = SupplementalRecordUI STR = value of <TermList><Term><CASN1Name> SCUI = ConceptUI SDUI = SupplementalRecordUI File: supp*.xml |
| NM | Name of Supplementary Concept | CODE = SupplementalRecordUI STR = value of <TermList><Term><String> SCUI = ConceptUI SDUI = SupplementalRecordUI File: supp*.xml TTY = NM is assigned to records where: RecordPreferredTermYN = "Y" ConceptPreferredTermYN = "Y" IsPermutedTermYN = "N" |
| PCE | Preferred entry term for Supplementary Concept | CODE = DescriptorUI STR = value of <TermList><Term><String> SCUI = ConceptUI SDUI = DescriptorUI File: supp*.xml TTY = PCE is assigned to records where: RecordPreferredTermYN = "N" ConceptPreferredTermYN = "Y" IsPermutedTermYN = "N" |
| PEP | Preferred entry term | CODE = DescriptorUI STR = value of <TermList><Term><String> SCUI = ConceptUI SDUI = DescriptorUI File: desc*.xml TTY = PEP is assigned to records where: RecordPreferredTermYN = "N" ConceptPreferredTermYN = "Y" IsPermutedTermYN = "N" |
| PM | Machine permutation | CODE = DescriptorUI STR = value of <TermList><Term><String> SCUI = ConceptUI SDUI = DescriptorUI File: desc*.xml TTY = PM is assigned to records where: RecordPreferredTermYN = "N" ConceptPreferredTermYN = "N" IsPermutedTermYN = "Y" |
| PXQ | Preferred qualifier term | CODE = QualifierUI STR = value of <TermList><Term><String> SCUI = ConceptUI SDUI =QualifierUI File: qual*.xml TTY = PXQ is assigned to records where: RecordPreferredTermYN = "N" ConceptPreferredTermYN = "Y" IsPermutedTermYN = "N" |
| QAB | Qualifier abbreviation | CODE = QualifierUI STR = value of <TermList><Term><Abbreviation> SCUI = ConceptUI SDUI = QualifierUI Suppress="Y" |
| QEV | Qualifier entry version | CODE = QualifierUI STR = value of <TermList><Term><EntryVersion> SCUI = ConceptUI SDUI = QualifierUI |
| QSV | Qualifier sort version | CODE = QualifierUI STR = value of <TermList><Term><SortVersion> SCUI = ConceptUI SDUI = QualifierUI |
| TQ | Preferred qualifier term | CODE = QualifierUI STR = value of <TermList><Term><String> SCUI = ConceptUI SDUI = QualifierUI File: qual*.xml TTY = TQ is assigned to records where: RecordPreferredTermYN = "Y" ConceptPreferredTermYN = "Y" IsPermutedTermYN = "N" |
| XQ | Alternate name for a qualifier | CODE = QualifierUI STR = value of <TermList><Term><String> SCUI = ConceptUI SDUI = QualifierUI File: qual*.xml TTY = XQ is assigned to records where: RecordPreferredTermYN = "N" ConceptPreferredTermYN = "N" IsPermutedTermYN = "N" |
| Attribute Name | Description | Origin: XML tag | XML file(s) |
|---|---|---|---|
| AN | Annotation | <Annotation> | desc*.xml qual*.xml |
| AQL | Allowable Qualifier List | <AllowableQualifiersList> | desc*.xml |
| CX | Consider Also Note | <ConsiderAlso> | desc*.xml |
| DC | Descriptor class | <DescriptorRecord DescriptorClass> | desc*.xml |
| DQ |
Date Qualifier Established | <DateEstablished><Year><Month><Day> | qual*.xml |
| DX | Date major descriptor established | <DateEstablished><Year><Month><Day> | desc*.xml |
| EC | Entry combination | <EntryCombination> <ECIN><QualifierReferredTo><QualifierName>: <ECOUT><DescriptorReferredTo><DescriptorName>/<QualifierReferredTo><QualifierName> |
desc*.xml |
| FR | MeSH frequency | <Frequency> | supp*.xml |
| FX | See Related mapping | <SeeRelatedDescriptor> | desc*.xml |
| HM | Heading Mapped To | <HeadingMappedToList><HeadingMappedTo><DescriptorUI> | supp*.xml |
| HN | History Note | <HistoryNote> | desc*.xml, qual*.xml |
| II | Indexing Information | <IndexingInformationList><IndexingInformation><DescriptorUI> (optional QualifierUI) or <SupplementalRecordUI> | supp*.xml |
| LT | Lexical tag | <LexicalTag> Only LexicalTags with value = "TRD" are included in the Metathesaurus |
desc*.xml supp*.xml |
| MDA | Date of entry | <DescriptorRecord|QualifierRecord|SupplementaryRecord><DateCreated><Year><Month><Day> | desc*.xml qual*.xml supp*.xml |
| MMR | Revision date | <DateRevised><Year><Month><Day> | desc*.xml qual*.xml supp*.xml |
| MN | Hierarchical number for tree structures. | <TreeNumber> | desc*.xml qual*.xml |
| OL | Online note | <OnlineNote> | desc*.xml qual*.xml |
| PA | Pharmacologic action | <PharmacologicalAction><DescriptorReferredTo><DescriptorUI> | desc*.xml supp*.xml |
| PI | Previous indexing | <PreviousIndexing> | supp*.xml |
| PM | Public note | <PublicMeSHNote> | desc*.xml |
| RN | Registry Number | <RegistryNumber> (any leading zeroes are dropped) | desc*.xml supp*.xml |
| RR | Related Chemical Abstracts Registry number | <RelatedRegistryNumber> | desc*.xml supp*.xml |
| SC | Supplemental record class | <SupplementalRecord SCRClass> | supp*.xml |
| SOS | Scope statement | <Note> | supp*.xml |
| SRC | Literature source of chemical name | <Source> | supp*.xml |
| TERMUI | Term unique identifier | <TermUI> | desc*.xml qual*.xml supp*.xml |
| TH | Thesaurus ID | <ThesaurusID> | desc*.xml supp*.xml |
| REL | RELA/Inverse RELA | Origin | XML File(s) |
|---|---|---|---|
| CHD PAR |
(no rela) | Represent the hierarchy as created from the values in the <TreeNumber> tags in dmesh and qmesh. Official MeSH xml release files do not include the top levels of a hierarchy, so additional top level concepts are created and maintained in separate files. | desc*.xml qual*.xml |
| AQ QB |
(no rela) | Connect descriptors with allowable qualifiers. Extracted from the <AllowableQualifiersList> tag in desc*.xml | desc*.xml |
| RB RN |
(no rela) | Connect: <ConceptRelation> <Concept1UI>
to <ConceptRelation><Concept2UI> Created where: <ConceptRelation RelationName="NRW"> <ConceptRelation RelationName="BRD"> |
desc*.xml qual*.xml supp*.xml |
| RB RN |
inverse_isa isa |
Connect: [<DescriptorRecord><DescriptorUI> or <SupplementalRecord><SupplementalRecordUI>] to <PharmacologicalAction>< DescriptorReferredTo><DescriptorUI> | desc*.xml supp*.xml |
| RB RN |
mapped_from mapped_to |
Connect: <SupplementalRecord><SupplementalRecordUI>
to <HeadingMappedTo><DescriptorReferredTo><DescriptorUI> Note: In cases where the <HeadingMappedTo> tag includes a <QualifierReferredTo>, an "RO|mapping_qualifier_of/has_mapping_qualifier" relationship will also be created. To pair the qualfier relationship with the correct mapped_to relationship, the same value for MRREL.RG (relationship group) is assigned. |
supp*.xml |
| RO | (no rela) | SDUI - SDUI: Connect: <DescriptorRecord><DescriptorUI> to <SeeRelatedDescriptor><DescriptorReferredTo><DescriptorUI> SCUI - SCUI: Connect: <ConceptRelation><Concept1UI> to <ConceptRelation><Concept2UI> Created where: <ConceptRelation RelationName="REL"> |
desc*.xml supp*xml (SCUI - SCUI only) qual*xml (SCUI - SCUI only) |
| RO | mapping_qualifier_of has_mapping_qualifier |
<SupplementalRecord><SupplementalRecordUI>
to <HeadingMappedTo><QualifierReferredTo><QualifierUI> Note: mapping_qualifier_of/has_mapping_qualifier relationships are always paired with mapped_to/mapped_from relationships connecting Supplementary Concept records to Descriptor records. To pair the qualifier relationship with the correct mapped_to relationship, the same value for MRREL.RG (relationship group) is assigned. |
supp*.xml |
| SY | entry_version_of has_entry_version |
Connect: AUI of <TermList><Term><String> with AUI of string in <EntryVersion> tag | desc*.xml |
| SY | expanded_form_of has_expanded_form |
Connect: AUI of <TermList><Term><String> with AUI of string in <Abbreviation> tag | qual*.xml |
| SY | has_permuted_term permuted_term_of |
For atoms with the same TERMUI, connects: AUI of string where IsPermutedTermYN="N" to AUI of string where IsPermutedTermYN="Y" | desc*.xml |
| SY | has_sort_version sort_version_of |
Connect: AUI of <TermList><Term><String> with AUI of string in <SortVersion> tag | desc*.xml |
The hierarchy is created from values in the <TreeNumber> tags in desc*.xml and qual*.xml. Official MeSH xml release files do not include the top levels of a hierarchy, so additional top level concepts are created and maintained in separate files.
No mappings are represented for MeSH.