The purpose of the SNOMED CT Route of Administration subset is to facilitate the use of SNOMED CT as the primary coding terminology for substance administration documentation. As local vocabularies often provide variable ways of representing commonly used concepts, the use of a common list of SNOMED CT concepts will maximize data interoperability among institutions. Institutions that use their own Route of Administration vocabularies are encouraged to map them to members of this subset of SNOMED CT.
The following guidelines were used to develop the subset:
– Only active concepts from the US Edition of SNOMED CT (which contains the International and US Extension Releases) are included.
– Only concepts that are subtypes of the concept  Route of administration value (qualifier value) are included.
– The sub-hierarchy structure of this branch of the terminology was not included, i.e. the subset is represented as a flat list of terms.
– Terms related to route of administration from other parts of the terminology were not considered for inclusion.
A new version of the subset will be published for each new US Edition of SNOMED CT release. Newly retired SNOMED CT concepts will be flagged and additional concepts may be added if appropriate.