A request submission has been received concerning the concept 371157007 |Able with difficulty (qualifier value)|, querying if it should be classified as a subtype of 371150009 |Able (qualifier value)| since it denotes a form of ability.
To help determine the appropriate hierarchy placement, we are gathering feedback on how nursing professionals interpret the term “able,” and whether there is an expectation that “able with difficulty” concepts would seen as subtypes of “able” concepts.
Existing Hierarchy & Terminology
1. Qualifier Value Hierarchy
The subhierarchy under Qualifier value used to represent the Has interpretation value for finding ability concepts is 371148001 |Ability interpretation value (qualifier value)|. Its subtypes include:
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371150009 |Able (qualifier value)|
- 371155004 |Able to and does (qualifier value)|
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371157007 |Able with difficulty (qualifier value)|
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371151008 |Unable (qualifier value)|
At present, |Able (qualifier value)| and |Able with difficulty (qualifier value)| are positioned as sibling concepts.
2. Clinical Finding Hierarchy
Concepts representing ability findings are located under << 118228005 |Functional finding (finding)|:
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Five concepts currently outside this hierarchy will be reviewed separately.
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Concepts addressing performance and dependency (e.g., does , does not , dependent for , independent for ) fall outside the scope of this topic.
Concept Counts
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Able to (finding): 924 concepts
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Able to with assistance (finding): 4 concepts
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Able to without assistance (finding): 5 concepts
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Difficulty (finding): 734 concepts
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Difficulty without assistance (finding): 2 concepts
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Unable to (finding): 736 concepts
Example Hierarchy Structure
In 365189008 |Finding related to ability to dry self (finding)|, the concepts Able to (finding) and Difficulty (finding) are siblings.
Open World View Perspective
SNOMED CT operates on an open world view. Under this framework, 371150009 |Able (qualifier value)| indicates the basic capacity to carry out an activity, regardless of the effort or difficulty involved. For example, a person remains capable of walking even if their movement is limited by reduced pace, short distance, or impaired gait. The same logic applies to the use of assistive devices or assistance. For example, an individual who uses a walking stick to move around is still classified as ‘able to walk’.
The Question
In noting this, would there be the same expectation clinically? Would nurses expect to see a concept representing able with difficulty to perform as a subtype of able to perform ? Using the above example, this would make 284832007 |Difficulty drying self (finding)| a subtype of 284828001 |Able to dry self (finding)|.
Thank you for your input.