1. Copyright © 2001 College of American Pathologists Sample Hierarchy for Blood Vessel Injury to the Leg Injury of blood vessels at ankle and foot level Popliteal blood vessel injury Injury of blood vessels at lower leg level Deep plantar blood vessel injury Peripheral vascular disease About SNOMED Relationships Injury of blood vessels of lower extremity Injury of blood vessels of the leg Tibial blood vessel injury

2. Copyright © 2001 College of American Pathologists Relationships for Injury to Blood Vessels of Leg (91523003) Peripheral vascular disease (281238003) Vascular structure of lower limb (210864001) Injury to blood vessels of leg (41335004) Injury of blood vessels of lower extremity (19130008) Traumatic abnormality Associated morphology Is a Has finding site

3. Copyright © 2001 College of American Pathologists Relationships for Tibial Blood Vessel Injury (210864001) Injury to blood vessels of leg (312532006) Tibial vessel (210883008) Tibial blood vessel injury (19130008) Traumatic abnormality Associated morphology Is a Has finding site

4. Copyright © 2001 College of American Pathologists Concept Inter-relationships for 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.relationship types

5. Copyright © 2001 College of American Pathologists Relationship Types for Disorders Clinical Attributes Finding Site Causative Agent Associated Morphology Laterality Hierarchical Is a

6. Copyright © 2001 College of American Pathologists The “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: “Tibial blood vessle injury” “Is a” (kind of) “Injury to the blood vessels of leg”

7. Copyright © 2001 College of American Pathologists The “Finding site” Relationship The “Finding site” relationship identifies the part of the body affected by the specific disorder or finding. For example: “Tibial blood vessel injury” (has) “Finding site” “Tibial vessel”

8. Copyright © 2001 College of American Pathologists The “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: “Colitoxemia” (has) “Causative agent” “Escheria coli toxin”

9. Copyright © 2001 College of American Pathologists The “Associated morphology” Relationship The “Associated morphology” relationship identifies the abnormal physical condition that is characteristic of a given disorder or finding. For example: “Injury to the leg” (has) “Associated morphology” “Traumatic abnormality”

10. Copyright © 2001 College of American Pathologists The “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”