Clinical concept extraction for document-level coding

S Wiegreffe, E Choi, S Yan, J Sun… - arXiv preprint arXiv …, 2019 - arxiv.org
arXiv preprint arXiv:1906.03380, 2019arxiv.org
The text of clinical notes can be a valuable source of patient information and clinical
assessments. Historically, the primary approach for exploiting clinical notes has been
information extraction: linking spans of text to concepts in a detailed domain ontology.
However, recent work has demonstrated the potential of supervised machine learning to
extract document-level codes directly from the raw text of clinical notes. We propose to
bridge the gap between the two approaches with two novel syntheses:(1) treating extracted …
The text of clinical notes can be a valuable source of patient information and clinical assessments. Historically, the primary approach for exploiting clinical notes has been information extraction: linking spans of text to concepts in a detailed domain ontology. However, recent work has demonstrated the potential of supervised machine learning to extract document-level codes directly from the raw text of clinical notes. We propose to bridge the gap between the two approaches with two novel syntheses: (1) treating extracted concepts as features, which are used to supplement or replace the text of the note; (2) treating extracted concepts as labels, which are used to learn a better representation of the text. Unfortunately, the resulting concepts do not yield performance gains on the document-level clinical coding task. We explore possible explanations and future research directions.
arxiv.org
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