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- All concepts will have at least two (2) descriptions: one (1) FSN (Fully Specified Name) and one (1) PS (Preferred Synonym);
- The Fully Specified Name is always unique in the terminology, while other descriptions may not be unique;
- Additional synonyms may be added to concepts;
- The format of synonyms and addition of synonyms is often driven by the domain requirements;
- Note that all synonyms of Immunization concepts are unique. This is important to ensure patient safety.
- Is intended to be unambiguous and unique in SNOMED CT®;
- It is recommended that the FSN NOT be used at the user interface;
- US English spelling is used in Canada. e.g. milliliter instead of millilitre;
- Restrictions in punctuation may restrict how terms are described;
- Refer to the domain specific guidelines for specific guidance.
- The PS is intended to be used at the user interface;
- The PS used is familiar to domain stakeholders;
- US English spelling is used. e.g.: pediatric as opposed to paediatric
- Restrictions in punctuation may restrict how terms are described;
- Refer to the domain specific guidelines for specific guidance;
- Restrictions in field length may require adjustment of wording;
- With the exception of Immunization, the PS is not always unique.
- A concept may have one or more synonyms;
- Content developed in the Canadian Edition includes a synonym that is the FSN without the semantic tag.