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Unified Medical Language System® (UMLS®)

2014AA UMLS ICD-10-CM Source Information

This page lists specific source data elements and provides information on their representation in the UMLS Metathesaurus.




Skip to: Notes, Summary of Changes, Summary of Source-Provided Files Source-Provided File Details

Notes

  • The Metathesaurus uses files submitted in TREF (Terminology Representation and Exchange Format).  These files are produced by the National Center for Health Statistics (NCHS) for Metathesaurus processing, and are not currently available publically.  TREF was developed by the NLM and is a subset of the Rich Release Format (RRF) - the format in which the UMLS Metathesaurus is released.  There is now an xml file available for ICD-10-PCS, which was processed and compared to the TREF data.  Discrepancies in the data were addressed in the TREF files.
  • Additional files and documentation are downloaded from http://www.cms.gov/Medicare/Coding/ICD10/2014-ICD-10-CM-and-GEMs.html.

Summary of Changes:

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Plain text forms of UTF-8 strings are no longer created. 

Deprecated TTYs:
    MTH_AB
    MTH_ET
    MTH_HT
    MTH_PT

Deprecated REL/RELA
    SY|has_plain_text_form/plain_text_form_of

Source-Provided Files: Summary

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The following are files used for Metathesaurus source processing.

Documentation and Reference

File Name Description
GemsTechDoc.pdf
GEMs guide for technical users
Dxgem_guide_2014.pdf Diagnosis Code Set General Equivalence Mappings Documentation and User's Guide
Gems2014UpdateSummary.pdf
GEMs update summary
reimb_map_guide_2014.pdf ICD-10-CM/PCS to ICD-9-CM Reimbursement Mappings Documentation and User's Guide
ICD10OrderFiles.pdf
Documentation for icd10cm_order_2014.txt

Data Files

File Name Description
MRCONSO.TREF Concepts, atoms and descriptors
MRDOC.TREF Documentation for abbreviated values
MRREL.TREF Relationships
MRSAB.TREF Source metadata
MRSAT.TREF Attributes
icd10cm_order_2014.txt Code descriptions in Tabular Order
2014_I10gem.txt ICD-10-CM to ICD-9-CM General Equivalence Mappings (GEMs)
2014_I9gem.txt ICD-9-CM to ICD-10-CM General Equivalence Mappings (GEMs)
reimb_map_dx_2014.txt ICD-10-CM to ICD-9-CM reimbursement mappings


Not included: All information from the ICD-10-CM TREF data files and from the mapping files is included in the UMLS representation.

Certain fields and files may not be directly processed because they contain redundant data.

Source-Provided Files: Details

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Details on format of input files and representation of source data.

file:MRCONSO.TREF

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# Field Name Description Representation
1
AUI
Atom Unique Identifier
not populated
2
STR
Name associated with an atom
MRCONSO.RRF.STR
3
CUI
Concept Unique Identifier
not populated
4
DUI
Descriptor Unique Identifier
MRCONSO.RRF.CODE, MRCONSO.RRF.SDUI
5
TTY
Term Type
MRCONSO.RRF.TTY

file:MRDOC.TREF

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File not directly used

file:MRREL.TREF

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# Field Name Description Representation
1
RUI
Relationship Unique Identifier
not populated
2
UI1
Unique Identifier of the first element
MRREL.RRF.UI1
3
STYPE1
Name of the column in MRCONSO.TREF that contains the identifier used for the first element
MRREL.RRF.STYPE1
4
REL
Relationship
Always "PAR"; used to create the hierarchy in MRHIER.RRF and PAR/CHD/SIB relationships in MRREL.RRF
5
RELA
Relationships attribute
not populated
6
UI2
Unique Identifier of the second element
MRREL.RRF.UI2
7
STYPE2
Name of the column in MRCONSO.TREF that contains the identifier used for the second element MRREL.RRF.STYPE2

file:MRSAB.TREF

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Not directly used

file:MRSAT.TREF

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# Field Name Description Representation
1
ATUI
Attribute Unique Identifier
not populated
2
UI
Unique Identifier of the thing to which the attribute is attached
MRSAT.RRF.UI
3
STYPE
Type of identifier used in the UI field MRSAT.RRF.STYPE
4
ATN
Attribute name
MRSAT.RRF.ATN for attributes other than DEFINITION
5
ATV
Attribute value
MRSAT.RRF.ATV for attributes other than DEFINITION
MRDEF.DEF for DEFINITIONS


file: icd10cm_order_2014.txt

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Character
Position
Length Description Representation
1
5
Order number, right justified, zero filled.
MRSAT.ATN = ORDER_NO
6
1
Blank
N/A
7
7
ICD-10-CM or ICD-10-PCS code. Dots are not included.
Not directly processed (extracted from MRCONSO.RRF)
14
1
Blank
N/A
15
1
0 if the code is a header not valid for submission on a UB04.
1 if the code is valid for submission on a UB04.
Not directly processed (extracted from MRCONSO.RRF;  determines TTY:  "0" for HT; "1" for "PT"
16
1
Blank
N/A
17
60
Short description
Not directly processed (extracted from MRCONSO.RRF;  TTY = AB)
77
1
Blank
N/A
78
Up to
300
Long description
Not directly processed (extracted from MRCONSO.RRF;  TTY = PT or TTY = HT)


file: 2014_I10gem.txt

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Field
Length
Begin
End
Representation
ICD-10-CM Code (source)
7
1
7
MRMAP.RRF.FROMID
MRMAP.RRF.FROMEXPR
Decimal point added as appropriate
filler
1
8
8
not used
ICD-9-CM Code (target)
5
9
13
MRMAP.RRF.TOID
MRMAP.RRF.TOEXPR
Decimal point added as appropriate
filler
1
14
14
not used
Approximate flag
1
15
15
Value of 1 (indicates the entry is not equivalent):
MRMAP.RRF.REL=RO
MRMAP.REL.RELA=approximately_mapped_to

Value of 0: 
MRMAP.RRF.REL=SY
MRMAP.RRF.RELA=mapped_to
No map flag
1
16
16
Value of 1:
MRMAP.RRF.REL=XR
Combination flag
1
17
17
Value of "1" indicates that more than one code is required.  This is implied in MRMAP.RRF by non-zero values in MAPSUBSETID.
Scenario
1
18
18
MRMAP.RRF.MAPSUBSETID (first subfield, before the ":")
Anything with the same FROMEXPR and MAPSUBSETID values should be "OR'd" together
Choice list
1
19
19
MRMAP.RRF.MAPSUBSETID (second subfield, after the ":")
Anything with the same FROMEXPR and MAPSUBSETID values should be "OR'd" together

file: 2014_I9gem.txt

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Field
Length Begin
End
Representation
ICD-9-CM Code (source)
5
1
5
MRMAP.RRF.FROMID
MRMAP.RRF.FROMEXPR
Decimal point added as appropriate
filler
1
6
6
not used
ICD-10-CM code (target)
7
7
13
MRMAP.RRF.TOID
MRMAP.RRF.TOEXPR
Decimal point added as appropriate
filler
1
14
14
not used
Approximate flag
1
15
15
Value of 1 (indicates the entry is not equivalent):
MRMAP.RRF.REL=RO
MRMAP.REL.RELA=approximately_mapped_to

Value of 0: 
MRMAP.RRF.REL=SY
MRMAP.RRF.RELA=mapped_to
No map flag
1
16
16
Value of 1:
MRMAP.RRF.REL=XR
Combination flag
1
17
17
Value of "1" indicates that more than one code is required.  This is implied in MRMAP.RRF by non-zero values in MAPSUBSETID.
Scenario
1
18
18
MRMAP.RRF.MAPSUBSETID (first subfield, before the ":")
Anything with the same FROMEXPR and MAPSUBSETID values should be "OR'd" together
Choice
1
19
19
MRMAP.RRF.MAPSUBSETID (second subfield, after the ":")
Anything with the same FROMEXPR and MAPSUBSETID values should be "OR'd" together

file: reimb_map_dx_2014.txt

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Field Name Length Begin
End
Representation
ICD-10-CM Code
8
1
8
MRMAP.RRF.FROMID
MRMAP.RRF.FROMEXPR
Decimal point added as appropriate
Number of ICD-9-CM mapped to
1
9
9
not used
1st ICD-9-CM code mapped to
6
10
15
Used in MRMAP.RRF.TOEXPR; if multiple ICD-9-CM codes are included, they are concatenated with "AND"
2nd ICD-9-CM code mapped to 6
16
21
Used in MRMAP.RRF.TOEXPR; if multiple ICD-9-CM codes are included, they are concatenated with "AND"
3rd ICD-9-CM code mapped to 6
22
27
Used in MRMAP.RRF.TOEXPR; if multiple ICD-9-CM codes are included, they are concatenated with "AND"
4th ICD-9-CM code mapped to 6
28
33
Used in MRMAP.RRF.TOEXPR; if multiple ICD-9-CM codes are included, they are concatenated with "AND"
5th ICD-9-CM code mapped to 6
34
39
Used in MRMAP.RRF.TOEXPR; if multiple ICD-9-CM codes are included, they are concatenated with "AND"