VA Knee Ratings Explained: Diagnostic Codes, Range of Motion Thresholds, and Secondary Conditions

Knee conditions are among the top service-connected disabilities claimed by veterans. The VA uses multiple diagnostic codes to rate different aspects of knee dysfunction - understanding how they work together is the difference between adequate compensation and leaving money on the table.

This post breaks down the main diagnostic codes, range-of-motion thresholds, how instability is rated separately, and how secondary conditions can significantly increase your combined rating.

The Key Diagnostic Codes for Knee Conditions

The VA rates different aspects of knee dysfunction under separate diagnostic codes. The most commonly applied codes are:

• DC 5260 - Limitation of Flexion (how far you can bend your knee)
• DC 5261 - Limitation of Extension (how far you can straighten your knee)
• DC 5257 - Recurrent Subluxation or Lateral Instability
• DC 5258 - Dislocated Semilunar Cartilage (torn meniscus with specific symptoms)
• DC 5259 - Removal of Semilunar Cartilage (symptomatic meniscus removal)
• DC 5055 - Knee Replacement (total or partial)

Critical point: you can hold separate ratings under multiple diagnostic codes for the same knee if each addresses a different functional impairment. A knee with limited motion and instability should be rated under both DC 5260/5261 and DC 5257, which VA guidance explicitly allows.

DC 5260: Limitation of Flexion

Normal knee flexion is about 140 degrees. The VA rates limitation of flexion based on how far you can't bend:

• 0% - Flexion limited to 60 degrees
• 10% - Flexion limited to 45 degrees
• 20% - Flexion limited to 30 degrees
• 30% - Flexion limited to 15 degrees

These numbers represent where your flexion stops, not total degrees lost. "Flexion limited to 45 degrees" means you've lost about 95 degrees of normal bend.

DC 5261: Limitation of Extension

Normal extension is 0 degrees - a fully straight leg. The VA rates limitation of extension based on how far short of straight your knee stops:

• 0% - Extension limited to 5 degrees
• 10% - Extension limited to 10 degrees
• 20% - Extension limited to 15 degrees
• 30% - Extension limited to 20 degrees
• 40% - Extension limited to 30 degrees
• 50% - Extension limited to 45 degrees

Extension ratings tend to be higher than flexion ratings because the inability to fully straighten your leg significantly impacts walking and standing. The VA allows separate ratings for limited flexion and limited extension on the same knee, per VA General Counsel Opinion VAOPGCPREC 9-2004.

DC 5257: Instability and Subluxation

DC 5257 covers recurrent subluxation (partial dislocation) or lateral instability (giving way or looseness), rated on severity:

• 10% - Slight instability
• 20% - Moderate instability
• 30% - Severe instability

Unlike motion limitations, instability is based on clinical testing and your reported symptoms - how often the knee gives out, whether you use a brace, whether you've fallen.

DC 5257 is rated separately from limitation of motion. A veteran with both limited flexion and instability in the same knee is entitled to two distinct ratings - this is one of the most commonly missed rating combinations.

Make sure your examiner documents real-world instability. "Stable on testing" doesn't necessarily reflect whether your knee gives way on stairs or during daily activities.

DC 5258 and 5259: Meniscus Conditions

Meniscus tears and surgeries have flat ratings: DC 5258 (dislocated cartilage with locking, pain, and swelling) is 20%, and DC 5259 (symptomatic meniscectomy) is 10%. DC 5258 requires all three symptoms, not just one.

DC 5055: Knee Replacement

Total knee replacement is rated 100% for one year following surgery. After that convalescent period, a minimum of 30% is assigned based on residual symptoms like pain, limited motion, or instability. Many veterans see their rating drop to 30% and don't realize they can provide evidence of ongoing functional impairment for a higher rating.

The DeLuca Factors: Why "On a Bad Day" Matters

Range of motion measured on a single exam day doesn't capture your actual limitations. The VA must consider additional functional loss due to pain on movement, weakened movement, fatigability, and flare-ups that further limit motion.

Tell the examiner specifically about flare-ups: how often they occur, how much worse your motion gets, and how long they last. Quantify it rather than saying "my knee is worse sometimes."

Secondary Conditions: Where the Real Rating Impact Lives

A service-connected knee condition changes the way you walk and stand, causing secondary conditions that can be separately service-connected. The most common secondary conditions from knee disabilities include:

• Contralateral knee - Favoring the bad knee overloads the other one
• Hip conditions - Altered gait commonly leads to hip bursitis or degenerative changes
• Lumbar spine conditions - Abnormal gait puts asymmetric stress on the lower back
• Ankle and foot conditions - Compensatory walking patterns cause plantar fasciitis or ankle instability
• Mental health conditions - Chronic pain and mobility loss can aggravate depression, anxiety, and sleep disorders

Each secondary condition requires a nexus letter explaining how it was caused or aggravated by the service-connected knee disability. Use our Combined Rating Calculator to see how adding secondary conditions affects your overall rating.

What to Document Before Your C&P Knee Exam

Knowing what the examiner will assess helps you prepare. Document:

• Range of motion on good days and bad days - Track over time if possible
• Flare-up frequency and severity - How often? What triggers them? How much worse?
• Instability episodes - Does the knee give way? Have you fallen? Do you use a brace?
• Pain levels - When pain occurs, what makes it worse
• Functional impact - What activities are limited or impossible
• Surgical history - Bring records of any knee surgeries or procedures
• Assistive devices - Bring and use your brace or cane to the exam

Do not try to "push through" the exam. The examiner is measuring your limitations, not your resilience. If motion decreases or pain increases with repetition, that gets documented and can support a higher rating.

Putting It All Together: Maximizing Your Knee Claim

A veteran with a single knee condition might receive 10% under DC 5260 alone. The same veteran with proper documentation could qualify for 10% under DC 5260 (flexion), 10% under DC 5257 (instability), plus ratings for contralateral knee, back condition, and hip condition - a dramatically different combined rating.

The VA won't connect these dots for you. You must claim each condition and provide the evidence.

Next Steps

Gather your medical records, imaging, surgical reports, and any documented range-of-motion measurements. Consider getting a nexus letter for secondary conditions. Use our Combined Rating Calculator to understand how additional ratings affect your compensation, and use our state comparison tool to see how knee-related ratings unlock state-level benefits based on where you live.