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SNOMED CT

Last uploaded: January 16, 2025
Details
Acronym SNOMEDCT
Visibility Public
Description

The US Edition of SNOMED CT combines the International Release of SNOMED CT and the US Extension of SNOMED CT

SNOMED CT provides the core general terminology for the electronic health record (EHR). The concepts have unique meanings and formal logic-based definitions organized into hierarchies. Each International Release includes the core of the terminology (concepts, descriptions, and relationships), together with works to support the implementation and use of SNOMED CT, including subsets, cross maps to existing classifications and coding schemes, and an extensive set of guidelines.

The US Extension to SNOMED CT included the concepts, descriptions, and relationships accepted by NLM as a formal extension to the SNOMED CT International Release. NLM no longer releases the standalone US Extension.

The US Edition of SNOMED CT includes more than 300,000 unique concepts. There are over 1,000,000 descriptions in SNOMED CT, including synonyms that can be used to refer to a concept. In addition, there are approximately 903,000 links or semantic relationships between the SNOMED CT concepts.
Status Production
Format UMLS
Contact NLM Customer Service, custserv@nlm.nih.gov
Categories Health
Groups Cancer Biomedical Informatics Grid, Unified Medical Language System
License InformationThis ontology is made available via the UMLS. Users of all UMLS ontologies must abide by the terms of the UMLS license.
Submissions
Version Released Uploaded
SNOMEDCT_US_2024_09_01 (Parsed, Indexed, Metrics, Annotator, Error Diff) 11/04/2024 01/16/2025
2024AA (Archived) 05/06/2024 08/28/2024
2023AB (Archived) 11/06/2023 01/31/2024
2023AA (Archived) 04/01/2023 08/07/2023
2022AB (Archived) 11/07/2022 01/06/2023
2022AA (Archived) 05/02/2022 06/10/2022
2021AB (Archived) 11/01/2021 11/18/2021
2021AA (Archived) 04/03/2021 05/20/2021
2020AB (Archived) 11/02/2020 01/06/2021
2020AA (Archived) 05/04/2018 09/24/2020
2019AB (Archived) 11/04/2019 11/18/2019
2019AA (Archived) 05/06/2019 08/27/2019
2018AB (Archived) 11/05/2018 04/29/2019
2018AA (Archived) 05/07/2018 07/06/2018
2017AB (Archived) 11/06/2017 07/06/2018
2017AA (Archived) 05/08/2017 04/06/2018
2016AB (Archived) 02/06/2017 02/06/2017
2016AA (Archived) 09/06/2016 09/06/2016
2015AB (Archived) 07/20/2016 07/20/2016
2015AA (Archived) 06/09/2015 06/09/2015
2014AB (Archived) 01/29/2015 01/29/2015
2014AA (Archived) 02/21/2014 02/21/2014
2013AA (Archived) 02/18/2014 02/18/2014
2013AA (Archived) 01/14/2014 01/14/2014
2013AA (Archived) 05/08/2013 09/25/2013
2011_01_31 (Archived) 01/31/2011 08/11/2011
2010_07_31 (Archived) 07/31/2010 11/09/2010
2010_01_31 (Archived) 01/31/2010 05/12/2010
2009_07_31 (Archived) 07/31/2009 01/05/2010
2009_01_31 (Archived) 01/31/2009 07/31/2009
more...
Views of SNOMEDCT
CCC Nursing Ontology
This is nursing diagnosis ontology of Clinical Care Classification
Cardiac-centered Frailty Ontology
This ontology is designed to cover the portions of reality relevant to assessing patient frailty. While we believe it to be relevant to frailty in general, during its development we were specifically focused on decisions relating to cardiac care. We gathered terms using existent instruments, physician interviews, and automated chart reviews. The hierarchical structure was taken from SNOMED-CT. We could not simply use SNOMED-CT because it is too exhaustive to be useful. We add entities where necessary to remain true to our data.
Drug-Induce Liver Injury (combined)
A SNOMED subset of terms related to histological and clinical descriptions of Drug Induced Liver Injury (DILI). See Wang et al., "A Unifying Ontology to Integrate Histological and Clinical Observations for Drug-Induce Liver Injury" The American Journal of Pathology, 182:4,1180-1187 (2013). This view contains both of the DILIo major branches; SNOMED:Body Structure and SNOMED:Clinical finding Some of the class names have been changed to correspond to the preferred names in SNOMED of 7/31/2011. In DILIo publication -> in this file; Disorder of liver -> Disease of liver; Finding of general form of body -> General form of body - finding; Finding of size of liver -> size of liver - finding; Subacute necrosis of liver -> subacute hepatic necrosis
Maternity_Test_Case2
Testing
MEdical LifeLog Ontology for people with disability
No description provided
SNOMED CT Standard Ontology Based on the Ontology for General Medical Science
The Systematized Nomenclature of Medicine Clinical Term Ontology (SCTO) attempts to create a basic OWL 2 ontology for SNOMED CT terminology. The ontology is built based on the Ontology of General Medical Science (OGMS). This ontology implements the SNOMED CT concept model by adding the appropriate axioms to its top-level concepts. The resulting ontology can prevent redundancies and inconsistencies in this large terminology. Moreover, the terminology maintenance can become more accurate. Finally, SNOMED CT can be used in a healthcare environment to create more complex post-coordinated expressions and constraints in a more accurate manner.
SNOMED Terminos Clinicos
SNOMED Terminos Clinicos (SNOMED CT), Edicion en Espanol, Distribucion Internacional, Octubre de 2008, 2009_04_30
Neoplasm_hamartoma
subset of snomed-ct regarding neoplasm and hamartoma
Neoplasm_breast_cancer
This a subset of Neoplasm_hamartoma view, based on Snomed clinical practice's used terms (Fondazione S.Maugeri anatomic pathology dep.). This subset is not to be meant exhaustive, it has been created in order to built a proper ontology for our project, ONCO-i2b2, through the NCBO Ontology Tools.
Snomed neoplasm, breast cancer
This a subset of snomed-ct regarding neoplasm and hamartoma, based on Snomed clinical practice's used terms (Fondazione S.Maugeri anatomic pathology dep.). This subset is not to be meant exhaustive, it has been created in order to built a proper ontology for our project, ONCO-i2b2, through the NCBO Ontology Tools.
Snomed, Body Structure
The Body Structure subtree in SNOMED-CT. It has been created in order to built a proper ontology for our project, ONCO-i2b2, through the NCBO Ontology Tools.
SNOMED Ethnic Group
Ethnic Group From SNOMED CT
SNOMED Anatomy
The Anatomy class subtree in SNOMED-CT based on SNOMED CT 2009.07.31
SNOMED Clinical Finding
Extract from SNOMED
SNOMED Organism
The Organism subtree in SNOMED-CT based on SNOMED-CT v. 2009.01.31
SNOMED Test Findings
The Test Findings subtree in SNOMED-CT based on SNOMED-CT v. 2009.01.31
SNOMED Morphologically Abnormal Structure
The Morphologically Abnormal Structure subtree of SNOMED CT
Reserved Acronym SNOMEDCT_US
Reserved acronym to prevent URI collusion with SNOMEDCT. see https://github.com/ncbo/bioportal-project/issues/198
Metrics
Classes 375,783
Individuals 0
Properties 246
Maximum depth 30
Maximum number of children 3,027
Average number of children 4
Classes with a single child 48,683
Classes with more than 25 children 3,114
Classes with no definition 367,146
Visits
Projects using SNOMEDCT

ACS-registry

ARRS GoldMiner

Educatioal Medical Materials Annotator

Epidemic Marketplace

Epidemiology Term Annotation

gilsnowmed

ICDmap

Integrative Genomics

International Fanconi Anemia Registry

ISA software suite

Kino

Lexigram

LogMap

Mapping of Norwegian national quality registries- Variabelbibliotek for medisinske kvalitetsregistre

Nomenclature for Anatomic Pathology

PMF_Foodmatrix

PractiKPharma

Radiology Gamuts Ontology

Rehabilita, Disruptive Technologies for the Rehabilitation of the Future

Semantic Indexing of French Biomedical Data Resources

SemGen

Socrates MD

TerminologyLinkingService

text mining psychiatric clinical notes

Jump to:
Id http://purl.bioontology.org/ontology/SNOMEDCT/17417006
http://purl.bioontology.org/ontology/SNOMEDCT/17417006
Preferred Name

Thickening of skin
Synonyms
Thickening of skin (disorder)
Type http://www.w3.org/2002/07/owl#Class

All Properties

altLabel
Thickening of skin (disorder)
prefLabel
Thickening of skin
Type ID
900000000000003001
900000000000013009
CASE SIGNIFICANCE ID
900000000000448009
notation
17417006
Effective time
20020131
Active
1
Has finding site
subClassOf
Semantic type UMLS property
type
Subset member
6011000124106~MAPRULE~IFA 402481000 | Porphyria-induced scleroderma (disorder) |
447562003~MAPRULE~TRUE
6011000124106~MAPADVICE~IF POST-INFECTIOUS SCLEREDEMA CHOOSE M34.9 | MAP OF SOURCE CONCEPT IS CONTEXT DEPENDENT
6011000124106~MAPRULE~IFA 402481000 | Porphyria-induced scleroderma |
6011000124106~MAPPRIORITY~7
6011000124106~MAPPRIORITY~4
6011000124106~MAPADVICE~IF THICKENING OF SKIN OF BREAST CHOOSE N64.59 | MAP OF SOURCE CONCEPT IS CONTEXT DEPENDENT
6011000124106~MAPADVICE~MAP SOURCE CONCEPT CANNOT BE CLASSIFIED WITH AVAILABLE DATA
6011000124106~MAPADVICE~IF PORPHYRIA-INDUCED SCLERODERMA CHOOSE M34.89 | MAP OF SOURCE CONCEPT IS CONTEXT DEPENDENT
6011000124106~MAPTARGET~
6011000124106~MAPCATEGORYID~447638001
6011000124106~MAPRULE~IFA 450848006 | Thickening of skin of breast (disorder) |
6011000124106~MAPGROUP~1
6011000124106~MAPGROUP~2
6011000124106~MAPADVICE~IF POST-INFECTIOUS SCLEREDEMA CHOOSE B94.9 | CONSIDER ADDITIONAL CODE TO IDENTIFY SPECIFIC CONDITION OR DISEASE | MAP OF SOURCE CONCEPT IS CONTEXT DEPENDENT
6011000124106~MAPPRIORITY~8
6011000124106~MAPRULE~IFA 450848006 | Thickening of skin of breast |
6011000124106~MAPRULE~IFA 1254862001 | Paraproteinemia-associated scleredema |
447562003~MAPGROUP~1
6011000124106~MAPRULE~IFA 95323007 &#x7C; Scleredema &#x7C; AND IFA 445518008 &#x7C; Age at onset of clinical finding (observable entity) &#x7C; < 29.0 days
6011000124106~MAPTARGET~P83.0
900000000000497000~MAPTARGET~XU8TX
447562003~CORRELATIONID~447561005
6011000124106~MAPRULE~IFA 1258980000 &#x7C; Post-infectious scleredema &#x7C;
6011000124106~MAPRULE~IFA 783013001 &#x7C; Parana hard skin syndrome &#x7C;
6011000124106~MAPCATEGORYID~447637006
6011000124106~MAPADVICE~IF PORPHYRIA-INDUCED SCLERODERMA CHOOSE E80.20 &#x7C; MAP OF SOURCE CONCEPT IS CONTEXT DEPENDENT
900000000000509007~ACCEPTABILITYID~900000000000548007
900000000000508004~ACCEPTABILITYID~900000000000548007
6011000124106~MAPADVICE~IF PARAPROTEINEMIA-ASSOCIATED SCLEREDEMA CHOOSE M34.89 &#x7C; MAP OF SOURCE CONCEPT IS CONTEXT DEPENDENT
6011000124106~MAPADVICE~ALWAYS R23.4
447562003~MAPADVICE~ALWAYS R23.4
6011000124106~MAPRULE~IFA 95323007 &#x7C; Scleredema (disorder) &#x7C; AND IFA 445518008 &#x7C; Age at onset of clinical finding (observable entity) &#x7C; >= 29.0 days
6011000124106~MAPTARGET~R23.4
447562003~MAPTARGET~R23.4
6011000124106~MAPRULE~IFA 238983004 &#x7C; Diabetic thick skin syndrome &#x7C;
447562003~MAPPRIORITY~1
447562003~MAPCATEGORYID~447637006
6011000124106~MAPADVICE~IF PARANA HARD SKIN SYNDROME CHOOSE L98.8 &#x7C; MAP OF SOURCE CONCEPT IS CONTEXT DEPENDENT
6011000124106~MAPRULE~OTHERWISE TRUE
6011000124106~MAPPRIORITY~5
6011000124106~MAPADVICE~IF SCLEREDEMA AND IF AGE AT ONSET OF CLINICAL FINDING ON OR AFTER 29.0 DAYS CHOOSE M34.9 &#x7C; MAP OF SOURCE CONCEPT IS CONTEXT DEPENDENT
6011000124106~MAPADVICE~IF SCLEREDEMA AND IF AGE AT ONSET OF CLINICAL FINDING BEFORE 29.0 DAYS CHOOSE P83.0 &#x7C; MAP OF SOURCE CONCEPT IS CONTEXT DEPENDENT
6011000124106~MAPPRIORITY~9
6011000124106~MAPTARGET~B94.9
6011000124106~MAPCATEGORYID~447639009
6011000124106~MAPRULE~IFA 95323007 &#x7C; Scleredema (disorder) &#x7C; AND IFA 445518008 &#x7C; Age at onset of clinical finding (observable entity) &#x7C; < 29.0 days
6011000124106~MAPTARGET~M34.89
6011000124106~MAPTARGET~E11.628
6011000124106~MAPADVICE~IF DIABETIC THICK SKIN SYNDROME CHOOSE E11.628 &#x7C; CONSIDER ADDITIONAL CODE TO IDENTIFY SPECIFIC CONDITION OR DISEASE &#x7C; MAP OF SOURCE CONCEPT IS CONTEXT DEPENDENT
6011000124106~MAPPRIORITY~1
6011000124106~MAPTARGET~E80.20
6011000124106~MAPPRIORITY~6
6011000124106~CORRELATIONID~447561005
6011000124106~MAPRULE~IFA 95323007 &#x7C; Scleredema (disorder) &#x7C;
6011000124106~MAPTARGET~L98.8
6011000124106~MAPRULE~IFA 95323007 &#x7C; Scleredema &#x7C;
6011000124106~MAPTARGET~M34.9
6011000124106~MAPPRIORITY~3
6011000124106~MAPADVICE~IF SCLEREDEMA CHOOSE M34.9 &#x7C; MAP OF SOURCE CONCEPT IS CONTEXT DEPENDENT
6011000124106~MAPPRIORITY~2
6011000124106~MAPTARGET~N64.59
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DEFINITION STATUS ID
900000000000074008
tui
T046
CTV3ID
XU8TX
cui
C0334008
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