VA Rating for Knee Injuries & Instability

Knee conditions are among the most common service-connected disabilities, particularly for veterans who served in physically demanding roles or experienced traumatic injuries. The knee is anatomically complex, and the VA recognizes this by providing 8 separate diagnostic codes for knee conditions (DC 5256 through 5263). A single veteran can sometimes be rated under multiple knee diagnostic codes simultaneously, capturing different aspects of the impairment without violating the pyramiding rule.

This guide explains each knee diagnostic code, how to qualify for multiple codes per knee, and how the bilateral factor adds another 10% boost when both knees are affected.

01
Knee Conditions Overview

Common service-connected knee conditions include:

• Patellofemoral pain syndrome (runner's knee): Pain around the kneecap, common from repetitive military activity
• ACL, MCL, PCL, or LCL ligament injuries: Often acute from training accidents or athletic activity
• Meniscus tears: Cartilage damage from twisting injuries or repetitive stress
• Patellar dislocations: Recurring or acute dislocations of the kneecap
• Knee osteoarthritis: Often degenerative, often secondary to military service injuries or repetitive impact
• Chondromalacia: Softening or breakdown of cartilage under the kneecap
• Bursitis: Inflammation of the bursae
• Post-surgical conditions: ACL reconstruction, meniscectomy, knee replacement

02
All Knee Diagnostic Codes

Each code captures a distinct functional impairment. The same knee can be rated under multiple codes if the conditions and symptoms are distinguishable.

03
DC 5257, Knee Instability

DC 5257 covers lateral instability, recurrent subluxation (partial dislocation), and ligament damage that does not fall under other codes. Rating criteria:

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

The severity assessment is somewhat subjective and relies heavily on the C&P examiner's clinical evaluation. Evidence supporting higher severity:

• Documented giving way during activities
• Falls due to knee instability
• Use of knee brace
• Inability to navigate stairs without assistance
• Positive Lachman, anterior drawer, or pivot-shift tests
• Visible swelling and effusion

DC 5257 is one of the few knee codes that can be assigned separately from range-of-motion codes (DC 5260 and 5261) because instability and limited motion are distinct impairments.

04
DC 5260, Limited Flexion

DC 5260 covers limitation of knee flexion (bending). Normal knee flexion is approximately 140 degrees. Rating criteria:

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

The C&P examiner measures knee flexion using a goniometer. The measurement at the point of pain (DeLuca factor) may be used to assign the rating, even if the veteran can technically flex further with pain.

05
DC 5261, Limited Extension

DC 5261 covers limitation of knee extension (straightening). Rating criteria:

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

Limited extension is rated higher than equivalent limited flexion because inability to fully extend the knee causes more functional impairment (difficulty walking, standing, climbing stairs). DC 5261 has the highest single rating ceiling among knee codes.

06
DC 5258 and 5259, Meniscus

Meniscus conditions have two diagnostic codes:

DC 5258, Dislocated Semilunar Cartilage (Meniscus)

For displaced or dislocated meniscus with locking, pain, effusion. Single 20% rating with frequent episodes of "locking," pain, and effusion into the joint.

DC 5259, Removal of Semilunar Cartilage

For post-meniscectomy condition (meniscus surgically removed). Single 10% rating for symptomatic conditions following removal.

Important: a veteran who has had a meniscus removed (DC 5259) and continues to have additional impairment (instability under DC 5257, limited flexion under DC 5260) can be rated separately under each code.

07
Rating Under Multiple Codes Simultaneously

One of the most important strategies for knee claims is recognizing that a single knee can be rated under multiple diagnostic codes when distinct conditions are present. Common combinations:

• DC 5257 (instability) + DC 5260 (limited flexion): Instability and limited flexion are distinct impairments
• DC 5257 (instability) + DC 5261 (limited extension): Same logic for limited extension
• DC 5258 (meniscus) + DC 5257 (instability): Meniscus damage and ligament instability are different conditions
• DC 5259 (post-meniscectomy) + DC 5257 (instability): Post-surgical condition plus instability
• DC 5260 (flexion) + DC 5261 (extension): Limited flexion AND limited extension can sometimes be rated separately

The VA assigns separate ratings when the conditions are distinguishable. The same symptom (e.g., pain) cannot be the basis for multiple ratings (pyramiding under 38 CFR § 4.14), but distinct impairments (instability vs limited motion) can each contribute to the combined rating.

Example: A veteran with chronic ACL deficiency might receive 20% for moderate instability (DC 5257) AND 10% for limited flexion to 45 degrees (DC 5260), producing a combined knee evaluation of approximately 28% (using the VA combined rating table).

08
Bilateral Factor for Both Knees

When both knees have service-connected disabilities, the bilateral factor under 38 CFR § 4.26 adds an additional 10% to the combined rating of the two knees.

The bilateral factor calculation:

Example: Left knee 30%, right knee 20%. Combined: 44% (using the table). With 10% bilateral factor: 44% + 4.4% = 48.4%, rounded to 48% or commonly to 50% depending on the rounding rules. The bilateral factor adds meaningfully to the final combined rating.

09
Establishing Service Connection

Service connection for knee conditions requires the standard three elements:

• Current diagnosis: Knee condition diagnosed by a medical professional (orthopedist preferred)
• In-service event or injury: Documented knee injury, repetitive stress, or condition during service
• Medical nexus: Opinion that the current condition is at least as likely as not caused by service

Common service-connected paths:

• Direct injury: Documented twist, fall, or accident during service
• Repetitive stress: Long marches, running with heavy packs, parachuting, athletic activity
• Continuity of symptoms: Knee problems began during service and continued unbroken since
• Aggravation: Pre-existing condition made worse by service
• Secondary service connection: Knee problems caused by gait changes from other service-connected conditions (back, hip, opposite knee)

10
Evidence Needed for Knee Claims

• Orthopedic evaluation with specific diagnoses (ACL deficiency, meniscus tear, instability, etc.)
• MRI results documenting ligament, cartilage, or bone damage
• X-rays showing degenerative changes, alignment issues, prior injuries
• Service treatment records showing knee complaints, treatment, profiles, line of duty
• Physical therapy records documenting limitations and treatment
• Surgical records if applicable (ACL reconstruction, meniscectomy, arthroscopy)
• Knee DBQ completed by treating provider
• Nexus letter linking the current condition to service
• Pain journal documenting frequency, severity, and triggers
• Brace prescription if you use one

11
C&P Exam Preparation

• Describe all symptoms specifically: Pain, instability, locking, swelling, giving way
• Demonstrate functional limitations: Difficulty with stairs, prolonged standing, squatting, running
• Be honest about range of motion: Demonstrate the point where pain begins (DeLuca factor matters)
• Mention all instability episodes: Falls, near-falls, giving way during activities
• Discuss flare-ups: Frequency, severity, duration of acute symptoms
• Bring your knee brace if you use one
• Bring documentation: Recent MRI, X-rays, treatment notes
• Mention bilateral involvement: If both knees are affected, ensure both are evaluated
• Discuss the impact on daily life: Work, exercise, family activities

12
Frequently Asked Questions

VA Claims US Editorial Team

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The VA Claims US editorial team is dedicated to helping veterans and their families understand and navigate the VA disability system. Our content is reviewed for accuracy against current VA regulations and updated whenever rates or policies change. Have a question? Contact us here.