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Unified Medical Language System® (UMLS®)

2014AA UMLS MEDCIN 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: MEDCIN3_2013_12_18

Summary of Changes

Ascii forms of strings generated from non-ascii strings are no longer being created. MTH* atoms along with their associated relationships have been deprecated (e.g., MTH_* atoms, SFO/LFO|mth_plain_text_form_of).

Source Provided Files:

The Metathesaurus uses the following four pipe-delimited MEDCIN files:
  • UMLS_MEDCIN_CONCEPTS2013-12-18.TXT
  • UMLS_MEDCIN_DESCRIPTIONS2013-12-18.TXT
  • UMLS_MEDCIN_HIERARCHY2013-12-18.TXT
  • UMLS_MEDCIN_SNOMED2013-12-18.TXT

Identifiers:

Identifiers are assigned as follows:
  • CODE: MEDCIN ID
  • SAUI: Not Applicable
  • SCUI: MEDCIN ID
  • SDUI: Not Applicable

Atoms (MRCONSO):

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Term Type Origin
FN An "FN" atom is created for each line of UMLS_MEDCIN_CONCEPTSyyyy-mm-dd.TXT, as follows.
CODE = MEDCINID
STR = CONCEPT_DESCRIPTION
SCUI = MEDCIN ID
PT A "PT" atom is created for each line of UMLS_MEDCIN_DESCRIPTIONSyyyy-mm-dd.TXT having PREF_FLAG_ID=1, as follows:
CODE = MEDCIN ID
STR = DESCRIPTION
SCUI = MEDCIN ID
SY An "SY" atom is created for each line of UMLS_MEDCIN_DESCRIPTIONSyyyy-mm-dd.TXT having PREF_FLAG_ID=0, as follows:
CODE = MEDCIN ID
STR = DESCRIPTION
SCUI = MEDCIN ID
XM One"XM"(cross mapping set) atom is generated, as follows:
CODE = "MTHU000001"
STR = "Medcin to SNOMEDCT Mappings"
SCUI = "" (blank)
This data is added during Metathesaurus source processing.

Attributes (MRSAT):

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Attribute Name STYPE Origin
PREF_FLAG_ID AUI PREF_FLAG_ID from UMLS_MEDCIN_DESCRIPTIONSyyyy-mm-dd.TXT
PREF_FLAG_ID RUI PREF_FLAG_ID from UMLS_MEDCIN_SNOMEDyyyy-mm-dd.TXT

In addition, the following map set attributes are added during Metathesaurus source processing:
FROMRSAB
FROMVSAB
MAPSETRSAB
MAPSETVERSION
MAPSETVSAB
MTH_MAPFROMCOMPLEXITY
MTH_MAPFROMEXHAUSTIVE
MTH_MAPSETCOMPLEXITY
MTH_MAPTOCOMPLEXITY
MTH_MAPTOEXHAUSTIVE
TORSAB
TOVSAB
XMAP
XMAPFROM
XMAPTO

Definitions (MRDEF):

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No definitions are provided for MEDCIN.


Relationships (MRREL):

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REL RELA/Inverse RELA ORIGIN
CHD
PAR
(blank) Hierarchical relationships derived from the "NODEKEY" values in UMLS_MEDCIN_HIERARCHYyyyy-mm-dd.TXT. The final two-character token is removed from each concept's "NODEKEY" to produce the "NODEKEY" of the concept's parent. These two concepts are then linked by a pair of "PAR/CHD" relationships.
RB
RN
RO
SY
 (many RELA values) Relationships are created for the MEDCIN-to-SNOMEDCT mappings in UMLS_MEDCIN_SNOMEDyyyy-mm-dd.TXT. The "REL" and "RELA" are set corresponding to the "RELATIONSHIPTYPE" field.

Mappings (MRMAP):

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One map set ("XM" atom, along with associated attributes and mappings) is included for MEDCIN.  Mappings are extracted from the file "UMLS_MEDCIN_SNOMEDyy-mm-dd.TXT.  Mappings are created for entries where the RELATIONSHIPTYPE = "168666000" (same_as).