Chronic instability of knee, unspecified knee
ICD-10 Code: M23.50 · Body Part: Knee
QME Evaluation Process
Knee ligament stability testing (Lachman, anterior/posterior drawer, varus/valgus stress), ROM testing, imaging review. Lower extremity impairment rating per AMA Guides 5th Edition.
Typical Impairment Rating
5-20% LE (2-8% WPI) based on instability grade
AMA Guides Edition
5th Edition
Common Treatments
Related Conditions
Body Part Guide
Knee Evaluation Guide
Impairment rating methods, common conditions, and QME evaluation protocols
QME Specialties for Chronic instability of knee, unspecified knee
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What is Chronic instability of knee, unspecified knee (M23.50)?
Chronic instability of knee, unspecified knee is an ICD-10 diagnosis code (M23.50) classified under Musculoskeletal conditions. It affects the Knee and is commonly encountered in California workers' compensation claims. QME physicians evaluate this condition using AMA Guides 5th Edition protocols.
How is M23.50 rated for impairment?
The typical whole person impairment (WPI) range for Chronic instability of knee, unspecified knee is 5-20% LE (2-8% WPI) based on instability grade. The exact rating depends on clinical findings, imaging, and the evaluation method (DRE or ROM) chosen by the QME physician per AMA Guides 5th Edition.
What is the QME evaluation process for M23.50?
Knee ligament stability testing (Lachman, anterior/posterior drawer, varus/valgus stress), ROM testing, imaging review. Lower extremity impairment rating per AMA Guides 5th Edition.
What treatments are common for Chronic instability of knee, unspecified knee?
Common treatments for Chronic instability of knee, unspecified knee include ACL reconstruction, Physical therapy, Bracing, Activity modification. Treatment appropriateness and outcomes are considered during the QME evaluation when determining permanent and stationary status and apportionment.