Idaho Impairment Rating Guide
Idaho workers' compensation governs permanent impairment rating under Idaho Code, Chapter 4, Section 72-422 (defines permanent impairment only); no specific edition is statutorily required.
Which Edition?
AMA Guides Edition No Statutory Edition
Statutory Authority
Idaho Code, Chapter 4, Section 72-422 (defines permanent impairment only)(opens in a new tab)
PPD Calculation
Statutory Maximum Weeks 500 weeks
PPI weeks = WPI% × 500 weeks. Permanent disability (PPD) may exceed the impairment rating based on statutory vocational disability factors (e.g., age, education, work history, and earning capacity).
Notes
Idaho statutes define permanent impairment but do not adopt a particular AMA Guides edition. Physicians commonly use the AMA Guides in practice, and the Commission evaluates the medical evidence; the Commission is the ultimate evaluator of impairment.
Frequently Asked Questions
Which impairment rating methodology does Idaho require?
Idaho governs permanent impairment rating under Idaho Code, Chapter 4, Section 72-422 (defines permanent impairment only) but does not statutorily mandate a specific edition of the AMA Guides or other methodology. Rating physicians commonly reference AMA Guides editions, but the choice is not controlled by statute.
How is permanent partial disability calculated in Idaho?
PPI weeks = WPI% × 500 weeks. Permanent disability (PPD) may exceed the impairment rating based on statutory vocational disability factors (e.g., age, education, work history, and earning capacity).
Where can I find a certified impairment rater in Idaho?
Browse our directory of certified impairment raters listed for Idaho. 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 Idaho
No certified raters are listed in Idaho yet — be the first to join the directory.
Submit Your Information →