Unified Medical Language System® (UMLS®)
2012AA International Classification of Diseases, 10th Edition, Clinical Modification Source Information
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.
- Additional files and documentation are downloaded from http://www.cms.gov/Medicare/Coding/ICD10/2012-ICD-10-CM-and-GEMs.html.
- Due to an error processing the "reimbursement" map set,
ICD-10-CM codes with no mapping to ICD-9CM are misrepresented
in MRMAP.RRF and MRSMAP.RRF. This affects 669 lines in
MRMAP.RRF and MRSMAP.RRF.
For example, in MRMAP.RRF, this
line:
C2936851|ICD10CM|||AT133799328||Z67.10||Z67.10|SDUI|||RQ|mapped_to|17285||NOD.X|SDUI|||||||||
Should be:
C2936851|ICD10CM|||AT133799328||Z67.10||Z67.10|SDUI|||XR||||||||||||||
In MRSMAP.RRF, this line:
C2936851|ICD10CM|AT133774791||T49.6X6D|SDUI|RQ|mapped_to|NOD.X|SDUI||
Should be:
C2936851|ICD10CM|AT133774791||T49.6X6D|SDUI|XR|||||
Summary of Changes:
)General: For consistency, plain ASCII text forms of atoms and attributes containing UTF-8 characters were created during Metathesaurus source processing.
New TTYs:
- AB (short description)
- MTH_ET (plain text version of entry term)
- MTH_PT (plain text version of preferred term)
- MTH_HT (plain text version of hierarchical term)
Deleted TTY:
- DET
New REL/RELAs:
- AB atoms are connected with SY/mth_expanded_form_of REL/RELA to the PT with the same code
- MTH_atoms are connected with SY/plain_text_form_of REL/RELA
to their non-MTH atom
New ATNs:
- ORDER_NO (indicates the line order in icd10cm_order_2012.txt)
- MTH_CODE_FIRST (plain text version of CODE_FIRST attribute)
- MTH_EXCLUDES1 (plain text version of EXCLUDES1 attribute)
- MTH_EXCLUDES2 (plain text version of EXCLUDES2 attribute)
Deleted ATNs:
- CHAPTER_NOTE
- MAPSETTYPE (deprecated mapping attribute)
Source-Provided Files: Summary
()The following are files used for Metathesaurus source
processing.
Documentation and Reference
| File Name | Description |
|---|---|
| GemsTechDoc.pdf |
GEMs guide for technical users |
| Dxgem_guide_2012.pdf | Diagnosis Code Set General Equivalence Mappings
Documentation and User's Guide |
| Gems2012UpdateSummary.pdf
|
GEMs update summary |
| reimb_map_guide_2012.pdf | ICD-10-CM/PCS to ICD-9-CM Reimbursement Mappings
Documentation and User's Guide |
| ICD10OrderFiles.pdf |
Documentation for icd10cm_order_2012.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_2012.txt | Code descriptions in Tabular Order |
| 2012_I10gem.txt | ICD-10-CM to ICD-9-CM General Equivalence Mappings
(GEMs) |
| 2012_I9gem.txt | ICD-9-CM to ICD-10-CM General Equivalence Mappings
(GEMs) |
| reimb_map_dx_2012.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
()Details on format of input files and representation of source
data.
file:MRCONSO.TREF
| # | 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
File not directly used
file:MRREL.TREF
| # | 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
Not directly used
file:MRSAT.TREF
| # | 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_2012.txt
| 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: 2012_I10gem.txt
| 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: 2012_I9gem.txt
| 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_2012.txt
| 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" |
