SNOMED CT® Release Format 1 (RF1) Guide - ihtsdo

34 | SNOMED CT Release Format 1 (RF1) Guide July 2012
Concept
M
2.2.1.3.2.3.1.3. Comprehensive primitive supertype view
List of proximal supertypes
An inferred view of a concept definition may contain relationships to all supertype ancestors that are "primitive"
concepts (yellow shaded in examples).
The rationale for this is that all the distinguishing features of the "fully defined" concepts (white unshaded in
examples) are represented by other defining relationships which will show up in the attribute part of the view.
This view can be used when testing whether a candidate concept is subsumed by a predicate expression. If
the proximal primitive supertype view of the predicate expression includes any concept that is not in the
comprehensive primitive view of the candidate concept definition, then the concept is not subsumed by the
expression.
Figure 12: Example hierarchy with comprehensive list of primitive supertypes
H, J
Table 8: Primitive Supertypes in the Example Hierarchy
Concept
A
B
C
D
Comprehensive list of primitive supertypes
© 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434
A
A, B
A
A, B