Welcome to the Department of Industrial Relations

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Division of Workers' Compensation - Workers' compensation information system (WCIS)

California's workers' compensation information system (WCIS) uses electronic data interchange (EDI) to collect comprehensive information from claims administrators to help the Department of Industrial Relations oversee the state's workers' compensation system. This information helps facilitate evaluation of the system and measure adequacy of benefits for injured workers and their dependents, and also provides statistical data for research. After initial development with input from affected groups, the first phase of WCIS became operational in September of 1999. Electronic transmission of first reports of injury was required beginning Mar. 1, 2000 and electronic versions of benefit notices were mandated as of Jul. 1, 2000. Electronic reporting of medical billing data is required for any medical service that occurs on or after Sep. 22, 2006.

Statutes and regulations

Information and resources

Research Studies

Evaluating the Permanent Disability Rating Schedule

First report and subsequent report of injury data reporting

Medical data reporting
IAIABC
5610 Medical Circle, Suite 24
Madison, WI, 53719-1295
Telephone: (608) 663-6355
Fax: (608) 663-1546

 

The IAIABC Guide is also available for inspection (but not copying)
Department of Industrial Relations
Division of Workers’ Compensation
1515 Clay Street, 17th Floor
Oakland, California 94612, between
9:00 A.M. and 4:30 P.M., Monday through Friday.

If you have questions, comments regarding WCIS email us at wcis@dir.ca.gov.

November 2009