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NIOSH is charged with conducting occupational hazard and health surveillance to identify trends and assist in setting priorities for research and prevention activities. Since the late 1970's NIOSH has collaborated with the National Center for Health Statistics (NCHS), the U.S. Bureau of Census other Federal agencies, and state health departments to capture and code industry and occupation (I&O) on data records for surveillance of occupationally related diseases, injuries, and exposures.

In support of this charge, NIOSH offers I&O coding training, coding software, and consultation services.

I&O Coding Services and Support

I&O Coding Training

Class Information, Request Training, Training Materials

I&O Coding Documentation

Instruction Manuals, NIOCCS Input File Formats, I&O Classifications and Crosswalks


Contact Information, Frequently Asked Questions (FAQs)

I&O Coding Software

NIOSH Industry and Occupation Computerized Coding System (NIOCCS)

Collecting and Using I&O Data

Guidelines, Publications, Presentations, Online Training

Related Links

Bureau of Census, NAICS, SOC, O*Net, OIICS, CDC PHIN

Contact Us:
  • Page last reviewed: June 9, 2015
  • Page last updated: June 9, 2015 The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Rd. Atlanta, GA 30329-4027, USA
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