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Volume 12, Number 10—October 2006

Research

Human Prion Disease and Relative Risk Associated with Chronic Wasting Disease

W. John Pape†, Jeri Forster*, C. Alan Anderson‡§, Patrick Bosque‡¶, Patrick Bosque‡¶, Michael Miller#, and Samantha MaWhinney
Author affiliations: *University of Colorado at Denver and Health Sciences Center, Denver, Colorado, USA; †Colorado Department of Public Health and Environment, Denver, Colorado, USA; ‡University of Colorado School of Medicine, Denver, Colorado, USA; §Denver Veteran's Affairs Medical Center, Denver, Colorado, USA; ¶Denver Health Medical Center, Denver, Colorado, USA; #Colorado Division of Wildlife, Fort Collins, Colorado, USA

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Table A1

ICD-9 code classifications for expanded event definition, 1979–1998

Code definition Age at death, y ICD-9 Total with code* (12–55 y)†
Slow virus infection of the central nervous system >12 046 0 (0)
Creutzfeldt-Jakob disease >12 046.1 54 (8)
Other slow virus infection >12 046.8 0 (0)
Unspecified slow virus infection >12 046.9 0 (0)
Presenile dementia 12–55 290.1 8 (8)
Senile dementia, depressed or paranoid type 12–55 290.2 0 (0)
Cognitive or personality change of other type >12 310.1 0 (0)
Other cerebral degenerations >12 331 0 (0)
Alzheimer disease 12–55 331.0 18 (18)
Pick disease >12 331.1 19 (3)
Senile degeneration of the brain >12 331.2 55 (0)
Other cerebral degeneration >12 331.8 13 (8)
Other cerebral degeneration, unspecified >12 331.9 569 (35)
Other extrapyramidal disease and abnormal movement disorders >12 333 0 (0)
Other degenerative diseases of the basal ganglia >12 333.0 78 (8)
Myoclonus >12 333.2 4 (1)
Other choreas >12 333.5 11 (0)
Other and unspecified conditions >12 333.9 22 (1)
Spinocerebellar disease >12 334 0 (0)
Primary cerebellar degeneration >12 334.2 7 (0)
Other cerebellar ataxia >12 334.3 18 (1)
Cerebellar ataxia in diseases classified elsewhere >12 334.4 0 (0)
Other spinocerebellar disease >12 334.8 27 (6)
Unspecified spinocerebellar disease >12 334.9 66 (6)
Encephalopathy, unspecified >12 348.3 620 (183)
Sleep disturbances >12 780.5 7 (1)
Abnormal involuntary movements >12 781.0 22 (2)
Abnormality of gait >12 781.2 13 (1)
Lack of coordination >12 781.3 49 (0)

*Deaths may have more than 1 code reported.
†Total deaths with code for persons ages 12–55 y.

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