1. Copyright © 2001 College of American Pathologists Sample Hierarchy for Nasal Septoplasty Repair of nasal septal perforation Nasal septoplasty with graft Reduction of closed nasal septal fracture Rhinoseptoplasty Repair of Nose About SNOMED Relationships Nasal Septoplasty

2. Copyright © 2001 College of American Pathologists Relationships for Rhinoseptoplasty (13529000) Nasal septoplasty (129377008) Reconstruction (68426009) Nasal septum structure (20805001) Rhinoseptoplasty Descriptions (34482006) Rhinoplasty Is a Has procedure site Has method

3. Copyright © 2001 College of American Pathologists Concept Inter-relationships for Procedures 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 procedures.relationship types

4. Copyright © 2001 College of American Pathologists Relationship Types for Procedures Clinical Attributes Method Procedure Site Direct Morphology Laterality Direct Device Using

5. 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: Nasal Septoplasty Is a (kind of) Repair of the nose

6. Copyright © 2001 College of American Pathologists The Procedure site Relationship The Procedure site relationship identifies the part of the body acted on by the procedure. For example: Nasal septoplasty (has) Procedure site Nasal septum

7. Copyright © 2001 College of American Pathologists The Direct morphology Relationship The Direct morphology relationship identifies the abnormal physical condition that is being directly addressed by the procedure. There is an implicit link between the method relationship and the direct morphology. The method acts on the direct morphology. For example:method Excision of cyst (has) Method Excision Excision of cyst (has) Direct morphology Cyst

8. Copyright © 2001 College of American Pathologists The Method Relationship The Method relationship identifies the kind of procedure that is being carried out. For example: Excision of cyst (has) Method Excision Catheterization (has) Method Implantation Serum sodium measurement (has) Method Observation

9. 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

10. Copyright © 2001 College of American Pathologists The Direct Device Relationship The Direct device relationship identifies the device which involved in the core operation of the procedure. An example of the direct device relationship are as follows: Catheterization of artery (has) Direct device Catheter

11. Copyright © 2001 College of American Pathologists The Using Relationship The Using relationship refers to any instrument, equipment or energy that is used to perform the procedure. Examples of the direct device relationship are as follows: Needle aspiration biopsy Uses Fine biopsy needle Laser surgery (has) Uses Laser light

12. Copyright © 2001 College of American Pathologists Descriptions for Rhinoseptoplasty