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Concepts will not be duplicated between the observable entity hierarchy and procedure hierarchy, and requests for such will not be added. While some users have indicated they want to use a procedure concept for ordering a test and an observable concept for reporting the result, this is not an acceptable use case.

At this time, SNOMED CT contains SNOMED CT contains some concepts in the procedure hierarchy which logically belong in the observable entity hierarchy. It is noted that ; these concepts will likely move to the observable entity hierarchy in the future. In addition, if we identify existing duplicate concepts are identified between the two hierarchies, this will also be corrected.

The evaluation procedure hierarchy is currently classified under Procedure by method, with many immediate children as follows:

• • • Procedure by method (procedure)
      • Evaluation procedure (procedure); some children include:
        • Imaging (procedure)
        • Measurement procedure (procedure)
        • Physical examination assessment (procedure)

Image Modified

Evaluation procedures can be defined by a Method (attribute) of Evaluation - action (qualifier value).

Subtypes of Evaluation-action (qualifier value) include: 

• • • • Examination - action (qualifier value)
      • Imaging - action (qualifier value)
      • Measurement - action (qualifier value)
      • Monitoring - action (qualifier value)
      • Spectroscopy - action (qualifier value)

Out of scope of procedures

SNOMED International is no longer accepting new concepts to the 122869004 |Measurement procedure (procedure)| hierarchy.  New requests for content in this area will be created in the 363787002 |Observable entity (observable entity)| hierarchy.  If new content is needed in the 122869004 |Measurement procedure (procedure)| hierarchy to satisfy existing use cases, it can be created in national extensions in the procedure hierarchy.  Please see Observable Entity and Observable Entity Naming Conventions pages for more information. 

SNOMED International is no longer accepting new concepts in the 127789004 |Laboratory procedure categorized by method (procedure)| hierarchy. New requests for concepts which are solely techniques should be created in the 272394005 | Technique (qualifier value)| subhierarchy.  New content that is an observation using a technique belongs in the 363787002 |Observable entity (observable entity)| hierarchy.  If new content is needed in the 127789004 |Laboratory procedure categorized by method (procedure)| hierarchy to satisfy existing use cases, it can be created in national extensions in the procedure hierarchy.  Please see the Technique and the Observable Entity pages for more information.

Procedures by count

Counts of the number of procedures

Many procedure classifications focus on resources required to complete; this may be for reimbursement or tracking purposes (e.g. placement of one stent versus placement of two stents).  This information should be part of patient documentation and is not allowed in the International Release.

Order of procedures

The order of procedures, e.g. primary, first, second, etc. should be excluded.

Reason for procedure

In general, the reason for ordering a procedure should not be precoordinated within the procedure concept, i.e. it should not constrain the reporting of results. The reason that a procedure is ordered may influence the interpretation of the results but usually does not influence the way the procedure is performed.

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