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Since January 1, 1994, Missouri insurance companies have set rates without approval of the Department of Commerce and Industry (DCI). Generally, insurance companies base their rates on loss data on each job classification code compiled by the National Council on Compensation Insurance (NCCI). The NCCI also is responsible for maintaining the job-classification code system and administering the experience rating plan. The NCCI can be reached at 800-622-4123 or via their Web site.