{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,9]],"date-time":"2026-06-09T04:45:30Z","timestamp":1780980330845,"version":"3.54.1"},"reference-count":25,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2005,4,15]],"date-time":"2005-04-15T00:00:00Z","timestamp":1113523200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Movement Disorders"],"published-print":{"date-parts":[[2005,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Administrative databases have the potential to assess quality and cost of care for parkinsonism and Parkinson's disease. However, the validity of findings is limited by our understanding of how cases are identified. Patient records listing International Classification of Diseases, Version 9, Clinical Modification (ICD\u20109 CM) codes for parkinsonism (n = 2,076) and dopaminergic medications (n = 2,798) were pulled from fiscal years 1999 to 2001 for patients in the Pacific Northwest Veterans Administration. Samples of these records (n = 397) and records <jats:italic>without<\/jats:italic> these ICD\u20109 CM codes (n = 500) were reviewed, and clinical data were extracted. The accuracy of administrative data to identify and distinguish between Parkinson's disease and parkinsonism was calculated. A total of 37.9% of parkinsonism cases were detected using pharmacy data and ICD\u20109 CM codes compared to 18.7% by using ICD\u20109 CM codes alone. The ICD\u20109 CM code for paralysis agitans (332.0) did not distinguish between probable Parkinson's disease and other causes of parkinsonism, whereas the ICD\u20109 CM code for degenerative basal ganglia disorder (333.0) predicted having secondary parkinsonism (odds ratio [OR] = 5.0) as well as dopa\u2010responsiveness in patients without secondary parkinsonism (OR = 4.5). Administrative data are limited in the ability to identify parkinsonism. The ICD\u20109 CM code, 332.0, which is generally considered the code to identify Parkinson's disease, did not distinguish between parkinsonism and Parkinson's disease. \u00a9 2005 Movement Disorder Society<\/jats:p>","DOI":"10.1002\/mds.20479","type":"journal-article","created":{"date-parts":[[2005,4,15]],"date-time":"2005-04-15T19:17:03Z","timestamp":1113592623000},"page":"964-970","source":"Crossref","is-referenced-by-count":55,"title":["Identifying and distinguishing cases of parkinsonism and Parkinson's disease using ICD\u20109 CM codes and pharmacy data"],"prefix":"10.1002","volume":"20","author":[{"given":"Kari","family":"Swarztrauber","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jane","family":"Anau","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dawn","family":"Peters","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2005,4,15]]},"reference":[{"key":"e_1_2_8_2_2","doi-asserted-by":"publisher","DOI":"10.1136\/jnnp.55.3.181"},{"key":"e_1_2_8_3_2","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.48.2.376"},{"key":"e_1_2_8_4_2","unstructured":"LuckJ PeabodyJW GlassmanPA EfrusyMB.How accurate are the diagnoses listed in administrative datasets?Abstract #1015.2003HSR&D National Meeting 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