ASCII MeSH Conversion to XML MeSH

This page includes a table of data elements in ASCII MeSH, with the corresponding elements and attributes in XML MeSH. See table 2, below. Note, however, that in some of the corresponding data elements the XML structure is more fine-grained, and a number of data elements in XML have no corresponding data in ASCII MeSH at all. See table 1.

1. Data in XML MeSH for which there is no corresponding data element in ASCII MeSH

See also the list of all XML MeSH Data elements which has descriptions and examples.

Record types:

D = Descriptor
Q = Qualifier
SCR = Supplemental Concept (formerly Chemical) Record

XML MeSH Element or Attribute	Record Type
<ActiveMeSHYearList>	D, Q, SCR
<Concept>	D, Q, SCR
ConceptPreferredTermYN [attribute of <Term>]	D, Q, SCR
<ConceptRelation>	D, Q, SCR
<Concept1UI>	D, Q, SCR
<Concept2UI>	D, Q, SCR
<ConceptUI>	D, Q, SCR
PreferredConceptYN [attribute of <Concept>]	D, Q, SCR
<RecordOriginator>	D, Q, SCR
<RecordAuthorizer>	D, Q, SCR
<RecordMaintainer>	D, Q, SCR
<RelationAttribute>	D ,Q, SCR
<SemanticTypeName>	D, Q, SCR
<TermUI>	D, Q, SCR

2. Data elements in ASCII MeSH, with the corresponding elements in XML MeSH

The table below lists data elements in ASCII MeSH with the corresponding element in XML MeSH. Note that in some cases the correspondence is not simply one-to-one. For example, in the case of terms, the conversion also involves setting XML attribute values. These are indicated in the table with the word "And". In other cases, the conversion holds only under certain data conditions, indicated in the table by the word "Where". See also the list of all XML MeSH Data elements and the lists of ASCII MeSH data elements via links listed under "Data Elements in MeSH records" on the Introduction to MeSH page.

ASCII MeSH element	Element Name	Record Type	XML element Tag or attribute
AN	Annotation	D, Q	<Annotation>
AQ	Allowable Qualifier	D	<AllowableQualifier> See also <Abbreviation>.
CATSH	Cataloging Subheadings	D	not in XML
CX	Consider Also XREF	D	<ConsiderAlso>
DA	Date of Entry	D, Q, SCR	<DateCreated>, <Year>, <Month>, <Day>
DC	Descriptor Class	D	DescriptorClass [attribute of <DescriptorRecord>]
DE	Descriptor Entry Version	D	<EntryVersion>
DQ	Date Qualifier Established	Q	<DateEstablished>, (<Year>, <Month>, <Day>)
DS	Descriptor Sort Version	D	<SortVersion>
DX	Date Descriptor Established	D	<DateEstablished> (<Year>, <Month>, <Day>)
EC	Entry Combination	D	<EntryCombination>
subelement [1]	[Qualifier input]	D	<ECIn>
subelement [2] subelement [3; opt]	MH output [Qualifier output; optional]	D	<ECOut>
ENTRY [term]	Entry Term, Non-Print	D	<Term>
PRINT ENTRY [term]	Entry Term, Print	D	<Term>
[term subelements]
b. subelement	Semantic Type	D, SCR	<SemanticType>
c. subelement	Lexical Type	D, SCR	LexicalTag [attribute of <Term>]
d. subelement	Semantic Relation	D, SCR	<ConceptRelation>, RelationName
e. subelement	Thesaurus ID	D, SCR	<ThesaurusID>
f. subelement	Date	D, SCR	<DateCreated>, <Year>, <Month>, <Day>
s. subelement	Sort Version	D, SCR	<SortVersion>
v. subelement	Entry Version	D, SCR	<EntryVersion>
FR	Frequency	SCR	<Frequency>
FX	Forward Cross Reference	D	<SeeRelatedDescriptor>
HM	Heading Mapped-To	SCR	<HeadingMappedTo>
HN	History Note	D, Q	<HistoryNote>
II	Indexing Information	SCR	<IndexingInformation>
MH	MeSH Heading	D	<Term> [And <Term> attributes:] IsPermutedTermYN="N" [AND] RecordPreferredTermYN="Y" [AND] PrintFlagYN="Y" [AND] ConceptPreferredTermYN="Y" See also <String>, <ConceptName>, <DescriptorName>
MH_TH	MeSH Heading Thesaurus ID	D	<ThesaurusID> [where <Term> attributes are:] IsPermutedTermYN="N" [AND] RecordPreferredTermYN="Y" [AND] PrintFlagYN="Y" [AND] ConceptPreferredTermYN="Y"
MN	MeSH Tree Number	D,Q	<TreeNumber>
MR	Major Revision Date	D, Q, SCR	<DateRevised> (<Year>, <Month>, <Day>)
MS	MeSH Scope Note	D,Q	<ScopeNote>
N1	CAS TYPE 1 NAME	D, SCR	<CASN1Name>
NM	Name of Substance	SCR	<Term> [And <Term> attributes:] IsPermutedTermYN="N" [AND] RecordPreferredTermYN="Y" [AND] PrintFlagYN="Y" [AND] ConceptPreferredTermYN="Y" See also <String>, <ConceptName> ,<SupplementalRecordName>
NM_TH	NM Thesaurus ID	SCR	<ThesaurusID> [where <Term> attributes are:] IsPermutedTermYN="N" [AND] RecordPreferredTermYN="Y" [AND] PrintFlagYN="Y" [AND] ConceptPreferredTermYN="Y"
NO	Note	Q, SCR	<Note>
OL	Online Note	D, Q	<OnlineNote>
PA	Pharmacological Action	D, SCR	<PharmacologicalAction>
PI	Previous Indexing	D, SCR	<PreviousIndexing>
PM	Public MeSH Note	D	<PublicMeSHNote>
QA	Topical Qualifier Abbreviation	Q	<Abbreviation>
QE	Qualifier Entry Version	Q	<EntryVersion>
QS	Qualifier Sort Version	Q	<SortVersion>
QT	Qualifier Type	Q	QualifierType [Attribute of <QualifierRecord>]
QX	Qualifier Cross Reference	Q	<Term> [And <Term> attributes:] RecordPreferredTermYN="N" [AND] PrintFlagYN="Y" [AND] IsPermutedTermYN="N" See also <String>, <ConceptName>
RECTYPE	Record Type	D, Q, SCR	See <DescriptorRecord>, <SupplementalRecord>, <QualifierRecord>
RH	Running Head	D	<RunningHead>
RN	CAS REGISTRY/ EC NUMBER/ UNII CODE	D, SCR	<RegistryNumber>
RR	Related Registry Number	D, SCR	<RelatedRegistryNumber>
SH	Subheading	Q	<Term> [And <Term> attributes:] IsPermutedTermYN="N" [AND] RecordPreferredTermYN="Y" [AND] PrintFlagYN="Y" [AND] ConceptPreferredTermYN="Y" See also <String>, <ConceptName>, <QualifierName>
SO	Source	SCR	<Source>
ST	Semantic Type	D, SCR	<SemanticType> [where <Concept> attribute:] PreferredConceptYN="Y"
SY	Synonym	SCR	<Term> [And <Term> attributes:] RecordPreferredTermYN="N" [AND] PrintFlagYN="N" [AND] IsPermutedTermYN="N" See also <String>, <ConceptName>
TN	Tree Node Allowed	Q	<TreeNodeAllowed>
UI	Unique Identifier	D, Q, SCR	<DescriptorUI>, <QualifierUI>, <SupplementalRecordUI>

Last Reviewed: June 6, 2016

Medical Subject Headings

ASCII MeSH Conversion to XML MeSH

1. Data in XML MeSH for which there is no corresponding data element in ASCII MeSH

2. Data elements in ASCII MeSH, with the corresponding elements in XML MeSH