Chondromalacia patellae, unspecified knee
ICD-10 Code: M22.40 · Body Part: Knee
QME Evaluation Process
Knee ROM testing, patellar grind test, imaging review. LE impairment rating based on cartilage damage grade and functional deficit.
Typical Impairment Rating
3-10% LE (1-4% WPI)
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 Chondromalacia patellae, unspecified knee
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What is Chondromalacia patellae, unspecified knee (M22.40)?
Chondromalacia patellae, unspecified knee is an ICD-10 diagnosis code (M22.40) 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 M22.40 rated for impairment?
The typical whole person impairment (WPI) range for Chondromalacia patellae, unspecified knee is 3-10% LE (1-4% WPI). 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 M22.40?
Knee ROM testing, patellar grind test, imaging review. LE impairment rating based on cartilage damage grade and functional deficit.
What treatments are common for Chondromalacia patellae, unspecified knee?
Common treatments for Chondromalacia patellae, unspecified knee include Physical therapy, Patellar taping/bracing, Arthroscopic chondroplasty. Treatment appropriateness and outcomes are considered during the QME evaluation when determining permanent and stationary status and apportionment.