Max Rady College of Medicine

Term: Most Responsible Diagnosis

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Glossary Definition

Last Updated: 2007-09-26


The one diagnosis which describes the most significant condition of a patient which causes his/her stay in hospital. In cases where multiple diagnoses may be classified as "most responsible", the diagnosis causing the greatest length of stay (LOS) is coded as "most responsible" on the hospital discharge abstract. The most responsible diagnosis may not necessarily be the same as the admitting diagnosis. Several studies have shown similarities between this diagnosis, principal diagnosis, and primary diagnosis.

Related concepts 

Related terms 


  • Manitoba Health Services Commission. Hospital Abstract User Manual. Winnipeg, MB: Manitoba Health Services, Commission; 2000. 0-0.(View)

Term used in 

  • Fransoo R, Martens P, The Need to Know Team, Prior H, Burchill C, Koseva I, Rajotte L. Who is in our Hospitals.and why? Winnipeg, MB: Manitoba Centre for Health Policy, 2013. [Report] [Summary] [Additional Materials] (View)
  • Garland A, Fransoo R, Olafson K, Ramsey C, Yogendran M, Chateau D, McGowan K. The Epidemiology and Outcomes of Critical Illness in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2012. [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