SNOMED CT Hierarchies

SNOMED CT concepts are organized in hierarchies with multiple levels of granularity. The broad coverage of topics included in SNOMED CT is illustrated by the examples of hierarchies listed below:

• Clinical finding/disorder
• Procedure/intervention
• Observable entity
• Body structure
• Organism
• Substance
• Pharmaceutical/biologic product
• Specimen
• Special concept
• Physical object
• Physical force
• Event
• Environment or geographical location
• Social context
• Staging and scales