M
IMEPro
M17.12 Musculoskeletal
Updated March 2026

Primary osteoarthritis, left knee

ICD-10 Code: M17.12 · Body Part: Knee

QME Evaluation Process

Knee ROM testing, weight-bearing X-rays, gait analysis. LE impairment rating with apportionment analysis.

Typical Impairment Rating

10-37% LE (4-15% WPI)

AMA Guides Edition

5th Edition

Common Treatments

+ Physical therapy
+ Intra-articular injection
+ Total knee arthroplasty

Related Conditions

Body Part Guide

Knee Evaluation Guide

Impairment rating methods, common conditions, and QME evaluation protocols

View Guide →

QME Specialties for Primary osteoarthritis, left knee

Find a QME Specialist

Browse QME-certified physicians who evaluate primary osteoarthritis, left knee and related knee conditions in California.

Browse Physical Medicine & Rehabilitation Physicians →

Frequently Asked Questions

What is Primary osteoarthritis, left knee (M17.12)?

Primary osteoarthritis, left knee is an ICD-10 diagnosis code (M17.12) 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 M17.12 rated for impairment?

The typical whole person impairment (WPI) range for Primary osteoarthritis, left knee is 10-37% LE (4-15% 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 M17.12?

Knee ROM testing, weight-bearing X-rays, gait analysis. LE impairment rating with apportionment analysis.

What treatments are common for Primary osteoarthritis, left knee?

Common treatments for Primary osteoarthritis, left knee include Physical therapy, Intra-articular injection, Total knee arthroplasty. Treatment appropriateness and outcomes are considered during the QME evaluation when determining permanent and stationary status and apportionment.