Knee pain VA disability ratings and diagnostic codes

The core knee diagnostic codes and rating criteria

The VA rating schedule contains several diagnostic codes covering specific anatomical and functional deficits of the knee joint.

Limitation of flexion (Diagnostic Code 5260)

Flexion refers to your ability to bend the knee so your heel moves toward your buttock. Normal knee flexion allows bending up to 140 degrees. Under Diagnostic Code 5260, ratings are assigned when range of motion is restricted:

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

A veteran receiving a 10% rating under this code receives $180.42 per month under the veteran-alone compensation schedule effective 2025-12-01.

Limitation of extension (Diagnostic Code 5261)

Extension refers to your ability to straighten your leg out flat. Normal extension reaches 0 degrees (a straight line from hip to ankle). When a knee cannot fully straighten—often described as an extension deficit or flexion contracture—it is rated under Diagnostic Code 5261:

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

At a 20% rating level, a veteran claiming alone receives $356.66 monthly, while a 30% evaluation pays $552.47.

Knee instability and patellar instability (Diagnostic Code 5257)

Joint instability occurs when damaged ligaments—such as the anterior cruciate ligament (ACL), posterior cruciate ligament (PCL), medial collateral ligament (MCL), or lateral collateral ligament (LCL)—or patellofemoral pathology allow the joint or patella to shift or sublux. Veterans with instability frequently report their knee giving out, buckling, or slipping during normal walking.

Under current 38 CFR 4.71a, Diagnostic Code 5257 evaluates recurrent subluxation or instability and patellar instability across three percentage tiers based on ligament damage, surgical repair history, and prescribed bracing or ambulation aids:

• 10% disability rating: Sprain, incomplete ligament tear, or complete ligament tear (repaired, unrepaired, or failed repair) causing persistent instability without a prescription from a medical provider for an assistive device or bracing for ambulation; or a diagnosed patellofemoral complex condition with recurrent instability (with or without history of surgical repair) that does not require a prescription from a medical provider for a brace, cane, or walker.
• 20% disability rating: Sprain, incomplete ligament tear, or repaired complete ligament tear causing persistent instability where a medical provider prescribes a brace and/or assistive device for ambulation; or an unrepaired or failed repair of a complete ligament tear causing persistent instability where a medical provider prescribes either an assistive device or bracing for ambulation; or a diagnosed patellofemoral complex condition with recurrent instability after surgical repair that requires a prescription by a medical provider for one of the following: a brace, cane, or walker.
• 30% disability rating: Unrepaired or failed repair of a complete ligament tear causing persistent instability where a medical provider prescribes both an assistive device (such as a cane, crutches, or walker) and bracing for ambulation; or a diagnosed patellofemoral complex condition with recurrent instability after surgical repair that requires a prescription by a medical provider for a brace and either a cane or a walker.

Meniscus and cartilage damage (Diagnostic Codes 5258 and 5259)

The menisci are crescent-shaped cartilage pads that cushion the knee joint. When torn during active service, they are rated under two primary codes:

• Diagnostic Code 5258: Cartilage, semilunar, dislocated, with frequent episodes of joint locking, pain, and effusion (fluid swelling) into the joint warrants a 20% disability rating.
• Diagnostic Code 5259: Removal of cartilage (meniscectomy) that remains symptomatic warrants a 10% disability rating.

Under VA rating rules, you cannot receive both DC 5258 and DC 5259 on the same knee joint. If a veteran underwent partial meniscectomy but continues to experience frequent joint locking and effusion, the VA assigns whichever code yields the higher evaluation.

Ankylosis of the knee (Diagnostic Code 5256)

Ankylosis occurs when the knee joint becomes completely frozen or fused, eliminating all active movement. Evaluations depend on the angle at which the joint is locked:

• Extremely unfavorable, locked in flexion at an angle of 45 degrees or more: 60%
• Locked in flexion between 20 and 45 degrees: 50%
• Locked in flexion between 10 and 20 degrees: 40%
• Favorable angle, locked in full extension or slight flexion between 0 and 10 degrees: 30%

Separate ratings on the same knee: Avoiding pyramiding

Under 38 CFR 4.14, the VA prohibits pyramiding—the practice of rating the same disability or symptom twice under different codes. However, VA General Counsel Precedent Opinions 9-2004 (separate flexion and extension ratings) and 9-98 (separate ratings for instability and limitation of motion) establish that separate ratings on the same knee are legally permissible when they evaluate separate functional impairments.

Specifically, a veteran can receive up to three separate ratings on a single knee:

1. One rating for limitation of flexion (DC 5260)
2. One rating for limitation of extension (DC 5261)
3. One rating for joint instability (DC 5257)

For example, a veteran whose right knee has flexion limited to 40 degrees (10%), an extension deficit of 15 degrees (20%), and moderate ligament instability (20%) can receive three separate service-connected evaluations for that single joint. These percentages combine using VA math rather than simple addition.

However, the VA will not assign a separate meniscus rating (DC 5258 or 5259) if the underlying meniscus damage is already fully compensated by your limitation of motion ratings, unless distinct symptoms like mechanical joint locking are documented.

The painful motion rule under 38 CFR 4.59

Musculoskeletal claims frequently involve joints that retain substantial range of motion despite severe, chronic pain. Under 38 CFR 4.59, the VA rating schedule is designed to compensate painful joints.

If your knee demonstrates pain during active or passive movement, the examiner must note the exact degree where pain begins. Even if your knee can bend all the way to 135 degrees, documented painful motion requires the VA to award at least the minimum compensable evaluation (10%) for that movement, typically coded under DC 5260 or under arthritis rules in DC 5003.

Secondary conditions caused by knee disabilities

A chronic knee condition alters your walking mechanics. When you limp, favor one leg, or step cautiously to avoid buckling, the unnatural distribution of force impacts adjacent joints throughout the lower body.

Under 38 CFR 3.310, veterans can claim secondary service connection for conditions resulting from a service-connected knee injury:

• Back pain: An antalgic gait creates pelvic obliquity and uneven spinal loading, frequently causing or accelerating lumbar degenerative disc disease or chronic lumbosacral strain.
• Sciatica: Spinal compensation from knee-related gait abnormalities can cause lumbar disc herniation, pinching the sciatic nerve and causing radiculopathy down the leg.
• Opposite knee arthritis: Favoring an injured right knee forces the left knee to absorb extra weight and impact, accelerating cartilage wear and osteoarthritis.
• Hip osteoarthritis: Altered hip rotation during walking to compensate for knee stiffness places abnormal shear forces across the hip joint capsule.

What to expect during a knee C&P exam

During a knee Compensation and Pension exam, the clinician completes the Knee and Lower Leg Conditions Disability Benefits Questionnaire. The examination involves several structured steps:

• Goniometer testing: The provider must use a goniometer to record your knee range of motion. Measurements must record both active motion (you moving the leg) and passive motion (the examiner moving the leg).
• Repetitive motion: The examiner will ask you to bend and straighten the knee repeatedly to assess whether pain, fatigue, weakness, or incoordination reduces motion further during repeated use.
• Stability testing: The clinician performs hands-on manipulation to check for ligament laxity in all directions.
• Joint effusion and warmth: The examiner inspects the knee for fluid buildup, joint capsule tenderness, crepitus (grinding sensation), and swelling.

Veterans should clearly describe their worst days and flare-ups, and stop moving the joint the moment pain begins so the examiner records your true functional limitation.

Combining knee ratings and calculating retroactive pay

When you receive multiple knee ratings—or when knee ratings combine with back, nerve, or other service-connected conditions—the VA calculates your final percentage using combined rating math. You can test different combinations using the VA combined rating calculator.

If your knee claim took months to decide or was approved following an appeal, the VA owes back pay retroactive to your initial effective date. You can calculate your potential retroactive payout using the VA back pay calculator.

Working with accredited representatives

Navigating multi-code knee ratings, range-of-motion measurements, and secondary gait claims requires thorough medical and legal documentation. Veterans should avoid unaccredited private consultants that charge hefty percentages of retroactive pay.

Free, expert assistance is available through accredited Veterans Service Officers (VSOs) at organizations like the DAV, VFW, and American Legion. For formal appeals, accredited attorneys and claims agents provide representation under federal standards. Find verified representatives in your area using the official VA accreditation search directory.