Unified Medical Language System® (UMLS®)
2012AB ICD-9-CM Source Information
VSAB: ICD9CM_2013, MTHICD9_2013
Summary of Changes
ICD-9-CM officially has minimal content updates for
2013. In an effort to synchronize long descriptions in
the Metathesaurus with CMS data, a different set of
source-provided files has been used for "codes" (represented
as TTY = "PT" in the Metathesaurus), resulting in changes in
MRCONSO.STR for cases where the CMS long description is
different from the 2012 Metathesaurus string. 2012
strings that were identified as lexically different from the
CMS 2013 long description have been preserved as entry terms
(TTY = "ET"). Chapters, categories and subcategories
(represented as TTY = "HT") have mot changed.
Note: On 08/09/2012, CMS issued corrections to full descriptions for 41 diagnoses codes. These changes were identified too late for incorporation into 2012AB. Affected codes are:
- 28412, 317, 3180-319, 32341, 32342, 36501, 48811-48819, 64670-64673, 79552, 9685, 9950, 99560-99569, 99931, V1649, V1659, V1781, V1789, V184, V2649, and V792.
Source Provided Files:
Full and abbreviated code titles:
Downloaded from https://www.cms.gov/Medicare/Coding/ICD9ProviderDiagnosticCodes/codes.html
Diagnoses:
CMS30_DESC_LONG_DX.txt
CMS30_DESC_SHORT_DX.txt
Procedures:
CMS30_DESC_LONG_SG.txt
CMS30_DESC_SHORT_SG.txt
Entry terms, hierarchy and attributes:
ICD9CM in the Metathesaurus was originally processed in 1999
using a combination of machine-processing and human
review. Through ICD9CM_2012, the Metathesaurus was
updated annually using the addenda, available in pdf format
from the following sites:
Diseases:
http://www.cdc.gov/nchs/icd/icd9cm_addenda_guidelines.htm#addenda
Procedures:
https://www.cms.gov/ICD9ProviderDiagnosticCodes/04_addendum.asp
Attributes, entry terms (SAB = MTHICD9, TTY = ET), and
hierarchical Terms (TTY = HT) were extracted from these files.
Identifiers:
Identifiers are assigned as follows:- CODE: ICD9CM code value
- SAUI: Not applicable
- SCUI: Not applicable
- SDUI: same as CODE
Atoms (MRCONSO):
)| SAB |
Term Type | Origin |
|---|---|---|
| ICD9CM |
AB |
CODE:
CMS30_DESC_SHORT_DX.txt,
CMS30_DESC_SHORT_SG.txt. The CODE/SDUI is
extracted from the first field. A decimal point
is inserted as appropriate. STRING: CMS30_DESC_SHORT_DX.txt, CMS30_DESC_SHORT_SG.txt: field 2. SDUI: Same as CODE |
| ICD9CM |
HT |
CODE: All non-leaf nodes are assigned
TTY=HT. In the .pdf addenda, new HTs are
generally tagged as "Chapter," "Category," or "Sub
Category" STRING: A fully-specified version of the string SDUI: Same as CODE |
| ICD9CM |
PT |
CODE: CMS30_DESC_LONG_DX.txt,
CMS30_DESC_LONG_SG.txt. The CODE/SDUI is
extracted from the first field. A decimal point
is inserted as appropriate. STRING: CMS30_DESC_LONG_DX.txt, CMS30_DESC_LONG_SG.txt: field 2. SDUI: Same as CODE |
| MTHICD9 |
ET |
CODE: The ICD-9-CM code corresponding with
this entry term. STRING: Most MTHICD9 ETs were generated by parsing the 1999 data file, and were then reviewed by Metathesaurus content editors. In the .pdf addenda, ETs sometimes appear directly under the primary string, or they may be tagged as "Inclusion term". SDUI: Same as CODE |
Attributes (MRSAT):
)Attributes were extracted from the .html and .pdf files based on the following guidelines:
| Attribute Name | Description |
Origin |
|---|---|---|
| ICA |
Additional codes note |
Information containing the following pattern:
"Use additional" |
| ICC |
Code also note |
Information containing
the following pattern: "Code also" |
| ICE |
Entry term(s) |
Entry terms appearing
directly under the primary string for a given
code. The ICE attribute contains the
original string as it appears in the data file, with
"{" used to indicate indentation. Where
applicable, individual entry terms have been extracted
and are represented as atoms with SAB="MTHICD9" and
TTY="ET" |
| ICF |
Fifth-digit code note |
Information containing
the following pattern: "[Ff]ifth-digit" |
| ICN |
Instruction providing
additional coding information |
Information containing
one of the following patterns: "Code first"
"Code, if applicable" "Note:" "Requires" |
| SOS |
Scope note |
Information containing
one of the following patterns: "Excludes:"
"Includes:" |
Relationships (MRREL):
)| REL | RELA Inverse RELA |
ORIGIN |
|---|---|---|
| PAR/CHD |
<no rela> |
Hierarchy built from the ICD9CM decimal-based code
format, along with higher-level section headings and
categories. |
| RQ |
<no rela> |
Connect MTHICD9/ET atoms with PT or HT atoms with
the same code |
| SY |
<no rela> |
Connect PT and AB atoms
with the same code |
