Arizona Impairment Rating Guide
Arizona workers' compensation requires the latest edition of the AMA Guides to the Evaluation of Permanent Impairment under Arizona Administrative Code R20-5-113(B) -- No specific Edition listed, rather than naming a specific edition.
Which Edition?
AMA Guides Edition Latest Edition
Statutory Authority
Arizona Administrative Code R20-5-113(B) -- No specific Edition listed(opens in a new tab)
PPD Calculation
Scheduled PPD Monthly Benefit = 55% × Average Monthly Wage (AMW). For partial loss of use, the scheduled months are prorated by the impairment percentage. Unscheduled PPD Monthly Benefit = 55% × (Pre-Injury AMW − Post-Injury Earning Capacity).
Notes
The physician should use the most recent edition of the AMA Guides, if applicable.
Frequently Asked Questions
Which edition of the AMA Guides does Arizona use?
Arizona does not name a specific edition. Under Arizona Administrative Code R20-5-113(B) -- No specific Edition listed, the applicable edition is the latest edition of the AMA Guides to the Evaluation of Permanent Impairment. Because this is a moving reference rather than a fixed one, the controlling edition changes when the AMA publishes a new edition — confirm which edition governs the claim before rating.
How is permanent partial disability calculated in Arizona?
Scheduled PPD Monthly Benefit = 55% × Average Monthly Wage (AMW). For partial loss of use, the scheduled months are prorated by the impairment percentage. Unscheduled PPD Monthly Benefit = 55% × (Pre-Injury AMW − Post-Injury Earning Capacity).
Where can I find a certified impairment rater in Arizona?
Browse our directory of certified impairment raters listed for Arizona. View the directory →
Does this information constitute legal or medical advice?
No. This page provides general statutory and methodological information for educational purposes only. Statutes change, case law shifts controlling interpretation, and individual cases turn on facts beyond what reference material can capture. Consult qualified legal counsel and a credentialed rating physician for any specific matter.
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