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Consider the stated relationships shown below for the concepts
| Concept |
|---|
| ShowParts | term |
|---|
| t | 80146002 |Appendectomy| |
|---|
|
and
| Concept |
|---|
| ShowParts | term |
|---|
| t | 174036004 |Emergency appendectomy| |
|---|
|
. The concept definitions are represented in accordance with
SNOMED CT Diagramming Guidelines.
| Caption label |
|---|
| CapId | example-stated-relationships |
|---|
| CapType | Table |
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|
Example stated relationships |
This diagram shows the stated definition of the concept | Concept |
|---|
| ShowParts | term |
|---|
| t | 80146002 |Appendectomy| |
|---|
|
. An | Concept |
|---|
| ShowParts | term |
|---|
| t | 80146002 |Appendectomy| |
|---|
|
is a procedure in which the appendix structure is excised. | Stated definition of |Appendectomy|  Image Modified |
This diagram shows the stated definition of the concept | Concept |
|---|
| ShowParts | term |
|---|
| t | 174036004 |Emergency appendectomy| |
|---|
|
. An | Concept |
|---|
| ShowParts | term |
|---|
| t | 174036004 |Emergency appendectomy| |
|---|
|
is a procedure with a priority of emergency, in which the appendix structure is excised. | Stated definition of |Emergency appendectomy|  Image Modified |
| This diagram shows a hierarchical view of the stated subtype relationships from the concepts above. | Stated subtype relationships  Image Modified |
| Caption label |
|---|
| CapId | comparison-of-stated-definitions |
|---|
| CapType | Table |
|---|
|
Comparison of stated definitions |
This diagram shows a comparison of the stated definitions for | Concept |
|---|
| ShowParts | term |
|---|
| t | 80146002 |Appendectomy| |
|---|
|
and | Concept |
|---|
| ShowParts | term |
|---|
| t | 174036004 |Emergency appendectomy| |
|---|
|
from above. The two definitions are identical, except for the additional defining relationship on | Concept |
|---|
| ShowParts | term |
|---|
| t | 174036004 |Emergency appendectomy| |
|---|
|
, which states that the priority is emergency. This means that a classifier can infer that | Concept |
|---|
| ShowParts | term |
|---|
| t | 174036004 |Emergency appendectomy| |
|---|
|
is a logical subtype of | Concept |
|---|
| ShowParts | term |
|---|
| t | 80146002 |Appendectomy| |
|---|
|
. |  Image Modified |
| Caption label |
|---|
| CapId | deriving-the-inferred-relationships |
|---|
| CapType | Table |
|---|
|
Deriving the inferred relationships |
This diagram shows that once the relationship | Concept |
|---|
| ShowParts | term |
|---|
| t | 174036004 |Emergency appendectomy| |
|---|
|
| Concept |
|---|
| ShowParts | term |
|---|
| t | 116680003 |is a| |
|---|
|
| Concept |
|---|
| ShowParts | term |
|---|
| t | 80146002 |Appendectomy| |
|---|
|
is inferred, the stated relationship | Concept |
|---|
| ShowParts | term |
|---|
| t | 174036004 |Emergency appendectomy| |
|---|
|
| Concept |
|---|
| ShowParts | term |
|---|
| t | 116680003 |is a| |
|---|
|
| Concept |
|---|
| ShowParts | term |
|---|
| t | 71388002 |Procedure| |
|---|
|
becomes redundant. |
 Image Modified |
Combining Modules for Classification
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The process of combining an extension with the content of the modules on which it depends is illustrated in below.
Image Removedin
| Caption reference |
|---|
| CapRefId | creating-inferred-relationships-of-extensions |
|---|
| CapRefType | Figure |
|---|
|
below. Image Added
| Caption label |
|---|
| CapId | creating-inferred-relationships-of-extensions |
|---|
| CapType | Figure |
|---|
|
Creating inferred relationships for an extension |
It is important that all inferred relationships present in the International Edition are also present in the combined inferred view. This means that the Relationship file in an extension's edition should be a superset of the Relationship file in the International Edition. In particular:
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