Escobedo Standard for Asymptomatic Pathology
Apportionment is permissible to asymptomatic pathology (e.g., DDD on MRI) if the QME medically explains how it currently contributes to the disability.
Difference between Aggravation and Exacerbation
Aggravation = permanent increase in pathology/disability. Exacerbation = temporary flare-up that returns to baseline.
Anderson Rule (Injury vs. Disability)
You apportion permanent disability (limitations), NOT the cause of the injury (e.g., hypertension causing a stroke).
LC 4664 Overlap Rule (Cup Analogy)
If a new finding (e.g., 15%) is less than or equal to a prior award (e.g., 20%) for the same region, the new industrial award is 0%.
Milpitas Standard (Independent Reasoning)
A QME cannot simply ‘adopt’ another doctor’s findings; they must provide independent clinical reasoning for every conclusion.
Benson Rule (Intertwined Disabilities)
Requires separate ratings for separate dates of injury unless inextricably intertwined; requires a specific logic bridge to deviate.
Initial Comprehensive Report Deadline
30 days from the date of the evaluation.
Supplemental Report Deadline
60 days from the date of the written request.
Factual Correction (Form 37) Response Window
10 days for a worker request; 15 days if the insurer is involved or joint.
Mandatory Face-to-Face Floor: Psychiatry
60 minutes.
Mandatory Face-to-Face Floor: Neurology (Non-ortho)
45 minutes.
Mandatory Face-to-Face Floor: Cardiovascular/Internal Med
30 minutes.
Mandatory Face-to-Face Floor: Ortho/Neuromusculoskeletal
20 minutes.
LC 3208.3(d) Psychiatric 6-month rule exception
Sudden and extraordinary employment events (e.g., violence, catastrophic accidents) waive the 6-month tenure requirement.
“Substantial Cause” threshold (Personnel Action Defense)
35% to 40%. If a good faith action is >= this amount, the whole psych claim is barred.
“Predominant Cause” threshold (General Psych Claims)
At least 51% (more than 50%).
Lumbar Structural Instability (DRE IV) Threshold
Translation > 5 mm OR Angular Motion difference > 11 degrees at a single level.
Cervical Structural Instability (DRE IV) Threshold
Translation > 3.5 mm.
Ratable Atrophy Threshold (Thigh/Calf)
A difference in circumference of 2 cm or more compared to the unaffected side.
Range of Motion (ROM) Consistency Standard
Measurements must be repeated until three consecutive readings are within 5 degrees or 10% of each other.
Grip Strength Validity Standard (Trials)
Average of 3 trials; all trials must be within 20% of the average to be valid.
GAF Score to WPI Conversion Source
The Permanent Disability Rating Schedule (PDRS) conversion table (NOT the AMA Guides).
Labor Code 4060 vs. 4061 vs. 4062
4060 = Compensability (Denied). 4061 = Rating/PD. 4062 = Catch-all (TD, P&S date, restrictions, new body parts).
QME Unavailability (Form 109) Reporting Floor
Absences of 14 to 90 days require 30 days advance notice to the Medical Director.