Washington Impairment Rating Guide
Washington workers' compensation uses a state-specific permanent impairment schedule under WAC 296-20-200 et seq..
Which Edition?
AMA Guides Edition State-Specific Schedule
Statutory Authority
WAC 296-20-200 et seq.
PPD Calculation
L&I (Labor & Industries) uses statutory category schedules (e.g., Category 1-6 cervical/lumbar). Permanent partial disability awards are statutory dollar amounts by category.
Notes
Washington uses its own category-based system in WAC 296-20; AMA Guides referenced where state categories are silent.
Frequently Asked Questions
How does Washington rate permanent impairment?
Washington uses its own state-specific permanent impairment schedule under WAC 296-20-200 et seq. rather than mandating an AMA Guides edition. See the notes below for the controlling framework.
How is permanent partial disability calculated in Washington?
L&I (Labor & Industries) uses statutory category schedules (e.g., Category 1-6 cervical/lumbar). Permanent partial disability awards are statutory dollar amounts by category.
Where can I find a certified impairment rater in Washington?
Browse our directory of certified impairment raters listed for Washington. 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 Washington
No certified raters are listed in Washington yet — be the first to join the directory.
Submit Your Information →