At level 1, the terminology server will accept CTU expressions matching the following pattern:
| Scg expression |
|---|
|
[[+ (< 404684003 |Clinical finding| MINUS << 162465004 |Symptom severity| ) @finding]]:
246112005 |Severity| = [[+ (<< 272141005 |Severities (qualifier value)| ) @severity]] |
This means that CTU expressions that includes the severity attribute will be accepted if the following criteria are met:
- The focus concept is a subtype of |Clinical finding| (but not a subtype of
| Concept |
|---|
| t | 162465004 |Symptom severity (finding)| |
|---|
|
) - The attribute value must be a subtype of
| Concept |
|---|
| t | 272141005 |Severities (qualifier value)| |
|---|
|
- When applied as a loose attribute, only one instance of the attribute may be stated in the CTU expression
- The severity attribute is not already present in the definition of the focus concept
As part of the transformation process, the terminology server will place the attribute in a group on its own, similar to the self-grouped attributes.
| Panel |
|---|
|
Please be aware that caution should be taken when adding |severity| to a focus concept, because severities are difficult to generalize and may be subject to individual interpretation, as stated in the Editorial Guide. |
| Caption label |
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| CapId | examples |
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| CapType | Table |
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Examples of CTU expressions candidates to this pattern, and their evaluation at level 1. |
| CTU expression | Accept/reject | Notes | Classifiable form |
|---|
| Scg expression |
|---|
16331000 |Heartburn|: 246112005 |Severity|= 24484000 |Severe| |
| Accept | Focus concept is within the domain of the attribute and the attribute value is within the allowed range of the attribute. |
| Scg expression |
|---|
===16331000 |Heartburn|: { 363698007 |Finding site (attribute)| = 32849002 |Esophageal structure (body structure)| }
{|Severity|= 24484000 |Severe|} |
|
| Scg expression |
|---|
25064002 |Headache|: 246112005 |Severity|=162471005 |Symptom very severe| |
| Reject | Attribute value is not within the allowed range for the |severity| attribute. | N/A |
| Scg expression |
|---|
717933005 |Severe thinness in adulthood|: 246112005 |Severity|= 442452003 |Life threatening severity| |
| Reject | Focus concept is already defined with a |severity| attribute, and the attribute value stated in the CTU is not a subtype of the value of the focus concept. | N/A |