Skip Navigation Archive: U.S. Department of Health and Human Services
Archive: Agency for Healthcare Research Quality
Archive print banner

This information is for reference purposes only. It was current when produced and may now be outdated. Archive material is no longer maintained, and some links may not work. Persons with disabilities having difficulty accessing this information should contact us at: Let us know the nature of the problem, the Web address of what you want, and your contact information.

Please go to for current information.

Figure: Iceberg Concept of Accidents and Errors

Image of an iceburg concept of accidents and errors.  The part of the iceburg above the water represents events that cause Death or Harm.  Below the water are: Not Harm Events (No actual harm but potential exists); Near Miss (Unwanted consequence prevented because of recovery); Dangerous Situations; and Errors and Deviations.

Return to Document


The information on this page is archived and provided for reference purposes only.


AHRQ Advancing Excellence in Health Care