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Unified Medical Language System® (UMLS®)

2014AA UMLS UMDNS Source Information

This page lists UMLS Metathesaurus data elements and traces them back to the specific source data that populates them.




Skip to:Atoms, Attributes, Definitions, Relationships, Mappings

VSAB:UMD2014

Summary of Changes:

No changes have been made to the original data files or to representation of UMDNS.

Source Provided Files:

The UMLS uses an xml version of UMDNS which is created with the TDE tool from Apelon, Inc. The file used for 2014AA is "NLM_20130903_v3.xml" (the defined view). (http://apelon.com/dtd/tde/ontylog.dtd)

Identifiers:

UMDNS includes both concepts, i.e. collections of synonymous atoms, and descriptors, i.e. collections of concepts that are considered to be closely related (but not necessarily synonymous). Therefore, atoms with TTY = "SY" are assigned the same Source-asserted Concept Identifer (SCUI), and Source-asserted Descriptor Identifier (SDUI) as their PT. However, atoms with TTY = "ET" are considered to be in a different concept from their "PT" (different SCUI) but members of the same descriptor (same SDUI). Identifiers are assigned as follows:

  • CODE:
    For termtypes "PT", "ET", "RT", "HT": populated by the "CODE_IN_SOURCE" property.
    For termtype "SY": populated by the "CODE_IN_SOURCE" value of the "PT"
  • SAUI:
    Not Applicable
  • SCUI:
    Same as "CODE"
  • SDUI:
    For termtypes "PT", "SY", "ET": CODE of "PT"
    For termtype "HT": CODE of "HT"
    For termtype "RT": CODE of "RT" (An "RT" may have multiple "PT"s, so we can't use code of "PT")

Atoms (MRCONSO):

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Term Type Origin
PT CODE = value of <CODE_IN_SOURCE> property
STR = value of <conceptDef><name>
SCUI = value of <CODE_IN_SOURCE> property
SDUI = value of <CODE_IN_SOURCE> property

Termtypes are assigned based on the value of the "DEVICE_TYPE" property. "PT"s are created where the "DEVICE_TYPE" is one of:
  • CATEGORY EXPANDED BELOW entry with SEE ALSO references
  • CATEGORY EXPANDED BELOW entry
  • Device has SEE ALSO references
  • Main Device Term
  • NIR entry
HT CODE = value of <CODE_IN_SOURCE> property
STR = value of <conceptDef><name>
SCUI = value of <CODE_IN_SOURCE> property
SDUI = value of <CODE_IN_SOURCE> property

Termtypes are assigned based on the value of the "DEVICE_TYPE" property. "HT"s are created where the "DEVICE_TYPE" is:
  • Hierarchical Term
RT CODE = value of <CODE_IN_SOURCE> property
STR = value of <conceptDef><name>
SCUI = value of <CODE_IN_SOURCE> property
SDUI = value of <CODE_IN_SOURCE> property

Termtypes are assigned based on the value of the "DEVICE_TYPE" property. "RT"s are created where the "DEVICE_TYPE" is:
  • Device is a USE MORE SPECIFIC TERM entry.
SY CODE = value of <CODE_IN_SOURCE> property of associated "PT"
STR = value of the "SYNONYM" property
SCUI = value of <CODE_IN_SOURCE> property of associated "PT"
SDUI = value of <CODE_IN_SOURCE> property of associated "PT"

SYs are created when a "SYNONYM" property exists
ET CODE = value of <CODE_IN_SOURCE> property
STR = value of <conceptDef><name>
SCUI = value of <CODE_IN_SOURCE> property
SDUI = value of <CODE_IN_SOURCE> property of associated "PT"

Termtypes are assigned based on the value of the "DEVICE_TYPE" property. ETs are created where the "DEVICE_TYPE" is:
  • Device is a SEE reference.

Attributes (MRSAT):

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Attribute Name Origin of ATV
DEVTYPE The value of the "DEVICE_TYPE" property. One of the following:
  • CATEGORY EXPANDED BELOW entry with SEE ALSO references
  • CATEGORY EXPANDED BELOW entry
  • Device has SEE ALSO references
  • Device is a SEE reference
  • Device is a USE MORE SPECIFIC TERM entry
  • Hierarchical Term
  • Main Device Term
  • NIR entry
Note: In the original data, some synonyms have a qualifier of "Synonym_Device_Type," and some are assigned a blank or incorrect DEVICE_TYPE.
For consistency, in the Metathesaurus, all SY atoms are defaulted to "Device is a SEE reference." DEVTYPE is attached to AUI for SY atoms; for all other atoms, it is attached to CODE.
SYCODE The value of the "Synonym_Code" qualifier, if present. Attached to AUI.

Definitions (MRDEF):

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ORIGIN
The value of the "DEFINITION " property, where value of the "Definition _Status" qualifier = "Releasable." Definitions with other qualifier values are excluded.

Relationships (MRREL):

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Relationship Relationship Label/Inverse Relationship Label ORIGIN
CHD
PAR
SIB
isa/inverse_isa Hierarchy extracted from "<definingConcept><concept>" values in original xml data
RB/RN
RO
   Relationships are assigned based on termtypes:
  • PT - PT: RO
  • PT - ET: RO
  • PT - RT: RN
(The Preferred term is narrower than Related term)
It has been acknowledged that this default may result in a small number of semantically incorrect relationships but this is considered the best default

Mappings (MRMAP):

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No mapping data is included for UMDNS