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Copyright © 2001 College of American Pathologists
Sample Hierarchy for HepatitisSample Hierarchy for Hepatitis
Chronic viralhepatitis
Chronic viralhepatitis C
About SNOMED Relationships
Viral hepatitis C
Viralhepatitis
Chronic hepatitis
Chronic infectious disease
Disease due to flavivirus
Copyright © 2001 College of American Pathologists
Relationships for Chronic Hepatitis CRelationships for Chronic Hepatitis C
(10295004)Chronic
viral hepatitis
(62944002)HepatitisC virus
(10200004)Liver
Structure
(128302006)Chronic
hepatitis C
Descriptions
(50711007)Viral
hepatitis C
(84499006)Chronic
inflammation
Associatedmorphology
Is a Is a
Hasfinding site
Has causativeagent
Copyright © 2001 College of American Pathologists
Relationships for Hepatitis C Relationships for Hepatitis C (Disorder)(Disorder)
(111865007)Disease dueto flavivirus
(62944002)HepatitisC virus
(10200004)Liver
Structure
(50711007)Viral
hepatitis C
Descriptions
(3738000)Viral
hepatitis
(23583003)Inflammation
Associatedmorphology
Is a Is a
Hasfinding site
Has causativeagent
Copyright © 2001 College of American Pathologists
Hierarchy for Hepatitis C Virus (Organism)Hierarchy for Hepatitis C Virus (Organism)
Hepatitis C virus(Living organism)
Flavivirus
Togaviridae
Virus
Copyright © 2001 College of American Pathologists
Concept Inter-relationships for Concept Inter-relationships for Disorders Disorders
• SNOMED CT uses relationships between concepts to provide logical, computer readable definitions of medical concepts. These relationships, which can be hierarchical or non-hierarchical, enable health data to be re-used for decision support, outcomes analysis and clinical research. Follow this link to see the relationship types applicable to finding and disorders.
Copyright © 2001 College of American Pathologists
Relationship Types for DisordersRelationship Types for Disorders
Clinical Attributes
• Finding Site
• Causative Agent
• Associated Morphology
• Laterality
Hierarchical
• Is a
Copyright © 2001 College of American Pathologists
The “Is a” RelationshipThe “Is a” Relationship
• The “Is a” relationship is used to create a hierarchical relationships between concepts, relating specific concepts to a more general category. For example:
Hepatitis C “Is a” (kind of) “Viral hepatitis”
Copyright © 2001 College of American Pathologists
The “Finding site” RelationshipThe “Finding site” Relationship
• The “Finding site” relationship identifies the part of the body affected by the specific disorder or finding. For example:
“Viral hepatitis” (has) “Finding site” “Liver”
Copyright © 2001 College of American Pathologists
The “Causative agent” RelationshipThe “Causative agent” Relationship
• The “Causative agent” relationship identifies the direct cause of the disorder or finding. The causative agent is the bacterium, virus, toxin or environmental agent that causes the disorder. For example: -
“Hepatitis C” (has) “Causative agent” “Hepatitis C virus”
Copyright © 2001 College of American Pathologists
The “Associated morphology” The “Associated morphology” RelationshipRelationship
• The “Associated morphology” relationship identifies the abnormal physical condition that is characteristic of a given disorder or finding. For example:
“Hepatitis C” (has) “Associated morphology” “Inflammation”
Copyright © 2001 College of American Pathologists
The “Laterality” RelationshipThe “Laterality” Relationship
• The laterality relationship specifies the side of the body that applies to an anatomy concept. Procedures, findings and disorders can have laterality by qualifying their site (procedure-site or finding-site). For example:
“Left kidney” (has) “Laterality” “Left”
“Cyst of left kidney” (has) “Finding site” “Left Kidney”
“Biopsy of left kidney” (has) “Procedure site” “Left Kidney”
Copyright © 2001 College of American Pathologists
Descriptions for Chronic Hepatitis CDescriptions for Chronic Hepatitis C
Term Description TypeChronic hepatitis C(disorder)
Fully specified name
Chronic hepatitis C Preferred TermChronic type C viralhepatitis
Synonym
Copyright © 2001 College of American Pathologists
Descriptions for Hepatitis CDescriptions for Hepatitis C
Term Description TypeViral hepatitis C(disorder)
Fully specified name
Viral hepatitis C Preferred TermHepatitis C SynonymType C viral hepatitis Synonym
