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Knee disabilities are among the most common service-connected conditions for veterans. The repetitive stress of running, marching, jumping, carrying heavy loads, and kneeling during military service places enormous strain on the knee joints. Whether your condition involves arthritis, meniscal tears, ligament damage, or post-surgical residuals, understanding how the VA rates knee disabilities is critical for ensuring you receive an accurate rating. What makes knee ratings particularly important is that the VA allows separate ratings for different aspects of knee impairment, meaning a single knee can receive multiple ratings.
The VA evaluates knee disabilities under several diagnostic codes, but the three most important are DC 5260 for limitation of flexion, DC 5261 for limitation of extension, and DC 5257 for recurrent subluxation or lateral instability. Each of these diagnostic codes evaluates a different type of impairment, and under VA precedential guidance, specifically VAOPGCPREC 23-97, VAOPGCPREC 9-98, and VAOPGCPREC 9-04, a veteran can receive separate compensable ratings under each code if the evidence supports it. This is one of the few areas where the VA explicitly allows what amounts to multiple ratings for the same joint.
Limitation of flexion under DC 5260 is rated based on how far you can bend your knee. Normal knee flexion is 140 degrees. A 0% (noncompensable) rating is assigned when flexion is limited to 60 degrees. A 10% rating is assigned when flexion is limited to 45 degrees. A 20% rating is assigned when flexion is limited to 30 degrees. A 30% rating, the maximum under this code, is assigned when flexion is limited to 15 degrees. These thresholds represent where your flexion stops due to pain, weakness, or structural limitation.
Limitation of extension under DC 5261 is rated based on how far you can straighten your knee. Normal knee extension is 0 degrees, meaning a fully straight leg. A 0% rating is assigned when extension is limited to 5 degrees. A 10% rating is assigned when extension is limited to 10 degrees. A 20% rating is assigned when extension is limited to 15 degrees. A 30% rating is assigned when extension is limited to 20 degrees. A 40% rating is assigned when extension is limited to 30 degrees. A 50% rating, the maximum under this code, is assigned when extension is limited to 45 degrees. Extension limitation often carries higher ratings than flexion limitation at comparable degrees of restriction because the inability to fully straighten the knee has a more significant impact on gait and weight-bearing ability.
Recurrent subluxation or lateral instability under DC 5257 is rated differently from the range-of-motion codes. This code does not depend on goniometer measurements. Instead, the examiner assesses whether the knee demonstrates instability, meaning the joint shifts or gives way. A 10% rating is assigned for slight recurrent subluxation or lateral instability. A 20% rating is assigned for moderate instability. A 30% rating, the maximum, is assigned for severe instability. Instability is typically assessed through physical examination tests such as the anterior drawer test, posterior drawer test, Lachman test, and valgus/varus stress tests. If your knee gives out, buckles, or feels unstable, make sure you clearly describe these episodes to the examiner.
The ability to receive separate ratings is what makes knee claims strategically important. For example, a veteran could receive a 10% rating under DC 5260 for flexion limited to 45 degrees, a 10% rating under DC 5261 for extension limited to 10 degrees, and a 20% rating under DC 5257 for moderate instability, all for the same knee. These ratings are then combined using VA math to produce a combined rating for that knee. Not all veterans qualify for separate ratings under all three codes, but many veterans who only have one rating may be entitled to additional ratings if their exam documents the relevant impairment.
Meniscal conditions are evaluated under DC 5258 for dislocated semilunar cartilage and DC 5259 for removal of semilunar cartilage. A dislocated meniscus with frequent episodes of locking, pain, and effusion into the joint warrants a 20% rating under DC 5258. A symptomatic removed meniscus warrants a 10% rating under DC 5259. The interaction between meniscal ratings and other knee ratings can be complex, and in some cases, the VA may combine or pyramid these ratings with range-of-motion or instability ratings depending on the specific symptoms and findings.
The C&P exam for knee disabilities is heavily focused on objective measurements. The examiner will use a goniometer to measure both active and passive range of motion for flexion and extension. They will note where pain begins during the range of motion arc. They will perform repetitive use testing, having you bend and straighten your knee three times and noting any additional limitation after repetitive use. They will perform stability tests. They will ask about flare-ups, including how often they occur, how long they last, what triggers them, and what additional functional limitation they cause. Providing specific, detailed answers about your flare-ups is critical because the examiner must estimate additional functional loss during flare-ups.
Arthritis in the knee, whether traumatic arthritis (DC 5010) or degenerative arthritis (DC 5003), is typically rated based on the range-of-motion limitation it causes. However, if X-ray evidence confirms arthritis but the range of motion limitation does not reach a compensable level, DC 5003 provides for a 10% rating for a major joint affected by arthritis with painful motion. This ensures that veterans with documented knee arthritis receive at least a 10% rating even if their range of motion measurements fall outside the compensable thresholds.
Total knee replacement, rated under DC 5055, follows a different schedule. After a total knee replacement, the VA assigns a temporary 100% rating for one year following the surgery. After that year, a C&P exam is scheduled to evaluate the residual impairment. The minimum rating after a total knee replacement is 30%, with higher ratings of 60% assigned for chronic residuals consisting of severe painful motion or weakness in the affected extremity. Intermediate ratings between 30% and 60% are assigned based on the specific residual limitations under the other knee diagnostic codes.
The bilateral factor is an important consideration for veterans with service-connected conditions in both knees. Under 38 CFR 4.26, when disabilities affect both paired extremities, a special calculation adds 10% of the combined value of those bilateral disabilities to the overall combined rating. For example, if you have a 20% rating for one knee and a 10% rating for the other knee, the bilateral factor increases the effective value of those combined ratings slightly. The bilateral factor is applied automatically by the VA during rating calculations, but understanding that it exists helps you appreciate the value of claiming conditions in both extremities.
Building strong evidence for a knee claim requires imaging and functional documentation. X-rays or MRIs showing arthritis, meniscal tears, ligament damage, or other structural abnormalities provide objective evidence of your condition. Treatment records documenting your symptoms, particularly pain with motion, instability episodes, locking, and swelling, support the severity of your claim. Records of physical therapy, steroid injections, bracing, or other treatments demonstrate the ongoing nature and severity of your condition.
If you use a knee brace, cane, or other assistive device, bring it to your C&P exam and make sure the examiner notes it. The use of assistive devices is relevant evidence of the severity of your condition. If your orthopedist has recommended activity restrictions, make sure those restrictions are documented in your treatment records.
The ClaimRecon Rating Calculator helps you understand how separate knee ratings under different diagnostic codes combine to produce your overall rating. The C&P Exam Simulator prepares you for the specific range-of-motion tests, stability tests, and questions the knee examiner will use. The Health Logger allows you to track instability episodes, flare-ups, and pain levels over time, creating a documented record that supports your claim. Ask Intel AI can explain the nuances of knee diagnostic codes and help you understand which codes apply to your specific condition. The Secondary Condition Finder identifies conditions commonly secondary to knee disabilities, including hip conditions from altered gait, lumbar spine conditions from compensatory movement patterns, and contralateral knee conditions from overuse.
Whether you are filing an initial claim for a knee condition or seeking an increase because your knee has worsened, understanding the diagnostic codes and their thresholds gives you the knowledge to ensure your claim is properly developed and your C&P exam accurately captures the full extent of your impairment.
This guide is for educational purposes only and does not constitute legal or medical advice. VA rating criteria are subject to change. Always consult with a VSO or VA-accredited attorney for case-specific guidance.
Written by ClaimRecon Editorial