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- W1990203073 abstract "Objectives To examine the specificity of dementia coding in large populations. Design Retrospective cohort and chart review study of dementia diagnosis. Setting U . S . D epartment of V eterans A ffairs ( VA ) New England healthcare system. Participants Veterans aged 50 and older given outpatient visit codes for dementia between J anuary 1, 2000, and D ecember 31, 2009. Measurements The frequency of the code “dementia not otherwise specified ( DNOS )” as a first and final diagnosis was determined. DNOS use was examined according to provider type and geographic location. The medical records of 100 individuals with unspecified dementia were reviewed to determine their underlying diagnoses and describe their examination. Results Twenty‐two thousand fifty veterans diagnosed with dementia were identified over 10 years of follow‐up. One‐third of all cases had no specific dementia code (n = 6,659). DNOS was the most commonly used code as a first dementia diagnosis (42.5%) and was second only to A lzheimer's type dementia (35.8%) as a final diagnosis. Individuals who saw geriatricians and neurologists were most likely to have a specific dementia diagnosis, and DNOS use was lowest in centers with the most dementia specialists. Only 12% of primary care physicians performed cognitive testing the first time they used the DNOS code, compared with 98% of specialists. Nearly half of individuals with a persistent diagnosis of DNOS met criteria for a specific dementia. Conclusion Substantial overuse was found of nonspecific dementia codes in the VA N ew E ngland healthcare system, leading to an underestimation of the prevalence of A lzheimer's disease and other dementias. System‐based changes in dementia coding and greater access to dementia specialists may help improve diagnostic specificity." @default.
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- W1990203073 date "2012-05-01" @default.
- W1990203073 modified "2023-10-17" @default.
- W1990203073 title "Underuse of Diagnostic Codes for Specific Dementias in the Veterans Affairs New England Healthcare System" @default.
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- W1990203073 doi "https://doi.org/10.1111/j.1532-5415.2012.03933.x" @default.
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