Multiple Impairments
Definition
When an injured worker has permanent impairment affecting more than one body part or organ system, the separate WPI ratings must be combined using the Combined Values Chart rather than simply added together. The combination process accounts for the diminishing impact of additional impairments on overall function.
Key Facts About Multiple Impairments in 2026
QME Physicians in CA
~2,500
Evaluation Fee Range
$2,500-$4,000
Report Deadline
30 days
Avg AI-Assisted Turnaround
14 days
Related Terms
Frequently Asked Questions
What is a Multiple Impairments?
When an injured worker has permanent impairment affecting more than one body part or organ system, the separate WPI ratings must be combined using the Combined Values Chart rather than simply added together. The combination process accounts for the diminishing impact of additional impairments on overall function.
How is multiple impairments calculated in California?
Multiple Impairments in California workers' compensation is typically determined using the AMA Guides to the Evaluation of Permanent Impairment, 5th Edition (2001). QME and AME physicians use standardized rating methods to ensure consistency across evaluations.