Colorado Impairment Rating Guide
Colorado workers' compensation uses the 3rd Edition, Revised of the AMA Guides to the Evaluation of Permanent Impairment under C.R.S. § 8-42-101.
Which Edition?
AMA Guides Edition 3rd Edition, Revised
Statutory Authority
C.R.S. § 8-42-101(opens in a new tab)
PPD Calculation
Statutory Maximum Weeks 400 weeks
Whole-person PPD = WPI % × statutory age factor × 400 weeks × TTD compensation rate. Scheduled injuries use the statutory member schedule in C.R.S. § 8-42-107(2).
Notes
Colorado mandates the AMA Guides 3rd Edition Revised, in effect as of July 1, 1991.
Frequently Asked Questions
Which edition of the AMA Guides does Colorado use?
Colorado uses the 3rd Edition, Revised of the AMA Guides to the Evaluation of Permanent Impairment under C.R.S. § 8-42-101. The applicable edition is generally determined by the worker's date of injury; consult counsel for cases that straddle effective-date transitions.
How is permanent partial disability calculated in Colorado?
Whole-person PPD = WPI % × statutory age factor × 400 weeks × TTD compensation rate. Scheduled injuries use the statutory member schedule in C.R.S. § 8-42-107(2).
Where can I find a certified impairment rater in Colorado?
Browse our directory of certified impairment raters listed for Colorado. 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.
List Your Practice in Colorado
No certified raters are listed in Colorado yet — be the first to join the directory.
Submit Your Information →