title: Leveraging Lexical Matching and Ontological Alignment to Map SNOMED CT Surgical Procedures to ICD-10-PCS.
abstract: In 2015 ICD-10-PCS replaced ICD-9-CM for coding medical procedures in the U.S. We explored two methods to automatically map SNOMED CT surgical procedures to ICD-10-PCS. First, we used MetaMap to lexically map ICD-10-PCS index terms to SNOMED CT. Second, we made use of the axial structure of ICD-10-PCS and aligned them to defining attributes in SNOMED CT. Lexical mapping produced 45% of correct maps and 44% of broader maps. Ontological mappings were 40% correct and 5% broader. Both correct and broader maps will be useful in assisting mappers to create the map. When the two mapping methods agreed, the accuracy increased to 93%. Reviewing the MetaMap generated body part mappings and using additional information in the SNOMED CT names and definitions can lead to better results for the ontological map.
authors.affiliation: National Library of Medicine, Bethesda, MD.
authors.forename: Kin Wah
authors.initials: KW
authors.lastname: Fung
authors.affiliation: National Library of Medicine, Bethesda, MD.
authors.forename: Julia
authors.initials: J
authors.lastname: Xu
authors.affiliation: National Library of Medicine, Bethesda, MD.
authors.forename: Filip
authors.initials: F
authors.lastname: Ameye
authors.affiliation: Ministry of Health, Social Services and Equality, Spain.
authors.forename: Arturo Romero
authors.initials: AR
authors.lastname: Gutiérrez
authors.affiliation: Federal Public Service of Health, Food Chain Safety and Environment, Belgium.
authors.forename: Arabella
authors.initials: A
authors.lastname: D'Havé
mesh_terms: D059019:Clinical Coding / Q000379:methods*; D006801:Humans; D038801:International Classification of Diseases; D039061:Systematized Nomenclature of Medicine