Occupational Injury and Illness Classification Manual

The Occupational Injury and Illness Classification System (OIICS) Manual provides the classification system used to code the case characteristics of injuries, illnesses, and fatalities in the Survey of Occupational Injuries and Illnesses (SOII) and the Census of Fatal Occupational Injuries (CFOI) programs. This manual contains the rules of selection, code descriptions, code titles, and indices, for the following code structures: Nature of Injury or Illness, Part of Body Affected, Source of Injury or Illness, Event or Exposure, and Secondary Source of Injury or Illness. The OIICS was originally released in December 1992. The current version is effective beginning with the SOII and CFOI data for 2007.

The links in the table of contents below are to PDF files, each of which contains a section of the manual. 

If you would prefer, you may download the manual in its entirety in two ways: 
1) The entire text as a single PDF file (PDF 956K)
2 ) A ZIP file that includes a PDF of each separate section shown below (Download ZIPPED PDFs 2.2MB)

In addition, lists of changes that were implemented in the 2007 revision are available in a zipped Excel file: 
(Download ZIPPED Excel file 29K) 

Instructions regarding the use of ZIP files are available: How to View ZIP Files

Section and Title

• 1. Introduction to the Occupational Injury and Illness Classification Manual
• 2. Definitions, Rules of Selection, and Titles and Descriptions
  • 2.1 Nature of Injury or Illness
    • 2.1.1 Definition, Rules of Selection
    • 2.1.2 Titles and Descriptions
  • 2.2 Part of Body Affected
    • 2.2.1 Definition, Rules of Selection
    • 2.2.2 Titles and Descriptions
  • 2.3 Source of Injury or Illness; Secondary Source of Injury or Illness
    • 2.3.1 Source of Injury or Illness Definition, Rules of Selection
    • 2.3.2 Secondary Source of Injury or Illness Definition, Rules of Selection
    • 2.3.3 Titles and Descriptions
  • 2.4 Event or Exposure
    • 2.4.1 Definition, Rules of Selection
    • 2.4.2 Titles and Descriptions
• 3. Code Titles
  • 3.1 Nature of Injury or Illness
  • 3.2 Part of Body Affected
  • 3.3 Source of Injury or Illness; Secondary Source of Injury or Illness
  • 3.4 Event or Exposure
• 4. Alphabetical Indices
  • 4.1 Nature of Injury or Illness
  • 4.2 Part of Body Affected
  • 4.3 Source of Injury or Illness; Secondary Source of Injury or Illness
  • 4.4 Event or Exposure

Last Modified Date: July 1, 2008