CA AB933

Requires psychologists and physicians conducting workers' compensation medical reviews to be licensed by California state law.

Mandates employers establish utilization review processes with written policies consistent with medical treatment schedules and American College of Occupational and Environmental Medicine guidelines.

Restricts authority to modify, delay, or deny medical treatment requests to California-licensed physicians who are competent to evaluate the specific clinical issues involved.

Establishes timeframes for utilization review decisions: 5 working days (not exceeding 14 days) for standard cases and 72 hours for cases involving imminent threats to health.

Requires written notification of decisions within specified timeframes, with detailed explanations for denials or modifications, and allows administrative penalties for non-compliance.