A self-grouped attribute is an attribute that, by editorial guidance, must be placed in an attribute group on its own. These are listed in Table 5.3.2.2-1.
Transformation Preconditions
This transformation will be applied to all loose attributes that meet the following conditions:
- The attribute applies to the MRCM domain of the focus concept
- See Table 5.3.2.2-1
- Only one instance of the attribute is stated in the CTU expression
- Although the MRCM allows multiple instances, this transformation condition aims to avoid misinterpretation of the intended meaning
- Either:
- The attribute type is not already used in the necessary normal form of the focus concept
- For example, if the focus concept already has a |Due to| attribute in the NNF then an expression including |Due to| would not be accepted
- The attribute type is already used in the necessary normal form of the focus concept and the value is equal to or a subtype of the existing value
- I.e. it represents a refinement
- The attribute type is not already used in the necessary normal form of the focus concept
Table 5.3.2.2-1: Self-grouped attributes and the domain they apply to.
| Domain | Attribute |
|---|---|
| Clinical finding | before |
| during | |
| after | |
| due to | |
| clinical course | |
temporally related to | |
associated with | |
| Procedure | priority |
| has focus |
Please refer to the Editorial Guide for instructions on the use and the implied meaning of these attributes:
As part of the expression transformation process, the terminology server will place the attributes in groups on their own, as shown in the examples below.
Table 5.3.2.2-2: Examples of CTU expressions candidate to this pattern, and their evaluation at level 1.
| CTU expression | Accept/reject | Notes | Classifiable form |
|---|---|---|---|
84229001 |Fatigue| : 255234002 |After| = 840539006 |COVID-19| | Accept | The focus concept |Fatigue| is not already defined with an |After| attribute and the MRCM permits it to be added as an additional qualifier | |
| Reject | The focus concept |Open fracture| is already defined with a |Due to| attribute, and the new value of 57168000 |Operation on bone| is not a subtype of 773760007 | Traumatic event| that is already used in the definition of that focus concept | N/A | |
| Accept | The focus concept | Appendectomy| is not defined with a | Priority| attribute, and the MRCM permits it to be added as a new qualifier |
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