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Fixed Issue

An equivalency error between has been discovered in the March 2020 SNOMED CT Canadian Edition release and a new March 2020 CA Edition package has been updated and published on the Terminology Gateway.

Two concepts are involved: 22841000087100 and 22921000087102 where the defining relationship Procedure site – Direct: Upper limb structure (body structure) is the same for both concepts.

The error is characterized by a misalignment between the Fully Specified Name description for Computed tomography of abdomen, pelvis and bilateral upper limbs with contrast (procedure) and its value for Procedure site - Direct (attribute), which should have been modeled as:

  • Procedure site - Direct → Structure of left upper limb
  • Procedure site - Direct → Structure of right upper limb

The detailed information can be found on this InfoRMS Ticket SCT-9622

 

Known Issues

Known Issues are content or technical issues where the root cause is understood and the resolution has been discussed and agreed but has yet to be implemented. This can be due to a number of reasons, from lack of capacity within the current editing cycle, to the risk of impact to the stability of SNOMED CT if the fix were to be deployed at that stage in the Product lifecycle.

 

Terminology issues

A) Known Issues identified but will not be changed for the various reasons listed below:

    1. Concepts Containing Conjunctions AND potential for the ambiguous concept
      When Editorial Guidelines were more « flexible » some « deviant » concepts were added to the CA Edition. These may be present in Communicable Disease and CPAC Projects/subsets. Since then, the Editorial criteria have matured and these types of concepts will no longer be added to the CA Edition. The following « deviant » concepts will be kept in the CA Edition until they are no longer required.
      Examples: 10741000087101|Malignant tumor of ovary and/or fallopian tube (disorder)| 

or 20721000087101|Meningitis or encephalitis (disorder)|

or 8141000087102|Anaphylaxis to previous dose or a constituent of this vaccine (situation)|

 

b. Duplicate Concepts

Some concepts were potentially duplicate concepts of existing concepts in the International Edition. 

Example: 577191261000087109|Congenital rubella infection (disorder)| and 1857005|Congenital rubella syndrome (disorder)|

 

c. Concepts Missing Definitions and Concepts Missing Refinements

Infoway does not « fully model » any of its Edition content. This is the reason why there may be some missing defining relationships that could better represent the meaning of a concept. The rationales for not modeling the CA Edition are:

  1. In the Terminology area where SNOMED International is reviewing the concept model and is re-designing the content, Infoway will wait until the International content is completed and stable before modeling its CA Edition content.

d. Incomplete Coverage

Some concepts were missing and therefore there is incomplete content coverage.

Examples: 22231000087107|Structure of nail of all fingers (body structure)| is a child of 70327001|Structure of all fingers (body structure)|. The concept 70327001|Structure of all fingers (body structure)| includes the following subtypes:

362779006|All fingers (body structure)|

• 22599004|Skin structure of all fingers (body structure)|

o 368364009|Entire skin of all fingers (body structure)|

• 88814004|Subcutaneous tissue structure of all fingers (body structure)|

o 368365005|Entire subcutaneous tissue of all fingers (body structure)|

• 22231000087107|Structure of nail of all fingers (body structure)|

It appears that a concept “Entire nail of all fingers” should also be created for completeness.

 

Technical fixed issues

  • None

 

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