Whole Person Impairment (WPI)
Legal basis: LC §4660.1
Definition
A percentage rating representing the degree of permanent impairment to the whole body, determined using the AMA Guides to the Evaluation of Permanent Impairment, 5th Edition. California uses WPI as the starting point for calculating permanent disability ratings, which are then adjusted by occupation, age, and future earning capacity.
Key Facts About WPI 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 Whole Person Impairment (WPI)?
A percentage rating representing the degree of permanent impairment to the whole body, determined using the AMA Guides to the Evaluation of Permanent Impairment, 5th Edition. California uses WPI as the starting point for calculating permanent disability ratings, which are then adjusted by occupation, age, and future earning capacity.
What is the legal basis for WPI in California workers' compensation?
Whole Person Impairment is governed by LC §4660.1 under California workers' compensation law. This statute defines the requirements, procedures, and standards for whole person impairment in the workers' compensation system as of 2026.
How is whole person impairment calculated in California?
Whole Person Impairment 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.