Max Rady College of Medicine

Term: Psychosis / Psychoses

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Glossary Definition

Last Updated: 2011-01-26


Medical condition involving a loss of contact with reality, often with symptoms such as hallucinations (sensing things that are not present or do not exist) or delusions (fixed false beliefs in events or facts). Psychosis is defined as any claim for a psychotic (ICD-9-CM: 295-299, ICD-10-CA: F2, F3, F84, R410 in any diagnosis field for physician or hospital claims in one year prior to the prescription of interest) (Daumit et al., 2003).

Related terms 


  • Daumit GL, Crum RM, Guallar E, Powe NR, Primm AB, Steinwachs DM, Ford DE. Outpatient prescriptions for atypical antipsychotics for African Americans, Hispanics, and whites in the United States. Archives of General Psychiatry 2003;60(2):121-128.(View)

Term used in 

  • Raymond C, Metge C, Alessi-Severini S, Dahl M, Schultz J, Guenette W. Pharmaceutical Use in Manitoba: Opportunities to Optimize Use. Winnipeg, MB: Manitoba Centre for Health Policy, 2010. [Report] [Summary] (View)

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Manitoba Centre for Health Policy
Community Health Sciences, Max Rady College of Medicine,
Rady Faculty of Health Sciences,
Room 408-727 McDermot Ave.
University of Manitoba
Winnipeg, MB R3E 3P5 Canada