
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 March 1, 2000 and electronic versions of benefit notices were mandated as of July 1, 2000. Electronic reporting of medical billing data is required for any medical service that occurs on or after Sept. 22, 2006.
Statutes and regulations
- Workers’ compensation information system (WCIS) final regulations - effective Nov. 15, 2011
- Workers' compensation information system final regulations - effective April 21, 2006
Information and resources
WCIS Meeting - May 14, 2012
- 2012 WCIS Advisory Meeting
- Meeting agenda
- WCIS Advisory meeting
- Division of Workers' Compensation posts Workers’ Compensation Information System (WCIS) administrative penalty regulations to online forum for public comment
Resources
- WCIS e.News - occasional WCIS announcements and technical updates
- Introduction to electronic data interchange (EDI) service providers
- International Association of Industrial Accident Boards and Commissions (IAIABC)
Research Studies
Evaluating the Permanent Disability Rating Schedule
- Uncompensated wage loss for injured workers with permanent disabilities version
- Wage loss for injured workers with permanent disabilities version
- Return to work rates for injured workers with permanent disability version
First report and subsequent report of injury data reporting (FROI & SROI)
- FROI & SROI reports, tables and papers
Frequently asked questions - first reports of injury and subsequent reports of injury - February 2013- EDI trading partner profile - FROI SROI
- California EDI trading partner insurer/claim administrator ID list
- California EDI implementation guide for first and subsequent reports of injury - version 3.0 – November 2011
- IAIABC EDI Implementation guide for first and subsequent reports of injury - release 1.0 - February 2002
Medical bill payment record reporting
- Medical billing reports, tables and papers
- Frequently asked questions - medical bill payments - September 2012
- Medical trading partners profile and FTP connectivity procedures
- California EDI implementation guide for medical bill payment records - version 1.1 – November 2011

- IAIABC EDI implementation guide for medical bill payment records - release 1.1 - July 1, 2009
Contact us
Please e-mail questions or comments regarding WCIS to wcis@dir.ca.gov
What's New
- WCIS system switchover update - June 27, 2012
- Division of Workers' Compensation posts Workers' Compensation Information System (WCIS) administrative penalty regulations to online forum for public comment - May 11, 2012
February 2013
