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VA rating for knee pain: diagnostic codes and math

By BilateralFactor Editorial Team · Published June 9, 2026

The short answer

Most knee ratings fall under one of two frameworks: limitation of motion (how far the knee bends or straightens) and instability (how much the joint slips or gives way). VA can rate both on the same knee when they represent distinct, separately identifiable conditions. The schedular ratings run from 10% to 60% depending on which diagnostic code applies and how severe the findings are.

If both knees are service-connected at 10% or higher, the bilateral factor under 38 CFR §4.26 adds 10% of the combined knee value before the total enters the broader combined-rating calculation.

Diagnostic codes that cover knee conditions

All knee ratings come from 38 CFR §4.71a, verified 2026-06-09.

DC 5257: Instability and subluxation (10/20/30%)

Recurrent subluxation or ligament instability is rated based on severity and prescribed adaptive equipment:

Patellar instability uses the same three tiers, keyed to whether treatment requires bracing plus a cane or walker (30%), bracing or an assistive device alone (20%), or neither (10%).

DC 5260: Limitation of flexion (0/10/20/30%)

Flexion is measured from 0 degrees (full extension) toward the maximum bend.

DC 5261: Limitation of extension (0/10/20/30/40/50%)

Extension is the ability to fully straighten the knee. Any inability to reach 0 degrees (full extension) is measured as a positive number.

DC 5256: Ankylosis (30/40/50/60%)

Ankylosis means the knee is fused and has no useful motion.

DC 5258 and 5259: Cartilage (semilunar meniscus)

DC 5263: Genu recurvatum

ROM measurement and painful motion

VA examiners measure range of motion with a goniometer. The knee starts at 0 degrees (full extension) and flexes toward the body. Flexion loss means the knee cannot fully bend; extension loss means the knee cannot fully straighten.

38 CFR §4.59 states:

“It is the intention to recognize actually painful, unstable, or malaligned joints, due to healed injury, as entitled to at least the minimum compensable rating for the joint.”

The practical consequence: if an examiner documents genuine pain on motion during the C&P exam, VA should assign at least a 10% rating under DC 5260 or 5261 even if the raw ROM measurement technically falls at the 0% threshold. The examiner must test the joint on both active and passive motion, in weight-bearing and non-weight-bearing positions.

Flare-ups matter too. If your knee is better during the exam than on a typical bad day, you can provide a lay statement documenting the functional loss during flare-ups. VA must consider this across the full record under §4.126.

Separate ratings for instability and limitation of motion on the same knee

VA general counsel precedent allows separate ratings under DC 5257 (instability) and DC 5260 or 5261 (limitation of motion) for the same knee when the conditions are separately identifiable rather than different expressions of the same single disability. A meniscal tear causing true ligamentous instability and a separate ACL injury causing extension loss may each qualify under its own code.

The key constraint is the anti-pyramiding rule under 38 CFR §4.14: VA cannot rate the same symptom twice. If your limitation of motion is solely a consequence of the instability, a single rating is appropriate. If both conditions are independently documented, the general counsel precedent supports separate ratings, and you can ask your rating specialist to address each code.

The bilateral factor for bilateral knee conditions

When both knees are service-connected at 10% or higher, 38 CFR §4.26 requires VA to apply the bilateral factor. Here is how the math works.

Example 1: 20% right knee (instability) + 20% left knee (flexion limitation)

  1. Combine the two knee ratings under §4.25: 20 + (20 × 80/100) = 20 + 16 = 36
  2. Apply the bilateral factor: 36 + 3.6 = 39.6, rounded to 40
  3. The bilateral group is treated as one 40% disability.
  4. Final rating (no other disabilities): 40%

Without the bilateral factor, 36 also rounds to 40. In this case the factor does not cross a rounding threshold.

Example 2: 30% right knee + 20% left knee

  1. Combine under §4.25: 30 + (20 × 70/100) = 30 + 14 = 44
  2. Bilateral factor: 44 + 4.4 = 48.4, rounded to 48
  3. Final rating: 48 rounds to 50%

Without the bilateral factor, 44 rounds to 40%. The factor is the difference between a 40% and a 50% final rating — one full payment tier.

If your decision letter shows a lower combined rating than this math produces, see what to do after a VA decision you disagree with.

Use the VA Combined Ratings Calculator to model your specific numbers and confirm whether the bilateral factor crosses a threshold for you.

How knee ratings combine with other disabilities

Knee ratings combine with all other service-connected conditions using the §4.25 efficiency formula: each disability operates on the remaining “whole person” capacity. If your bilateral knee group produces a 48% value and you have a 20% lumbar strain:

C&P exam tips

Your C&P examiner will measure ROM, test for joint stability, and document any pain response. Bring your treatment records. Describe your worst typical days, not just how the knee feels in the exam room. If the examiner does not test passive motion or does not ask about flare-ups, note that in writing and request a corrected exam or an addendum.

For related rating topics, see also:

This page explains schedular rating math only. Individual VA decisions depend on service-connection evidence, exam findings, and claim-specific facts. See our disclaimer for the limits of this information.

Frequently asked questions

Can VA rate both instability and limitation of motion on the same knee?

VA general counsel precedent allows separate ratings for distinct conditions on the same knee (for example, DC 5257 for instability and DC 5260 for flexion loss) when the disabilities are separately identifiable. If you believe your rating letter collapsed two distinct conditions into one code, a Higher-Level Review or appeal can request the evaluator address each code separately.

What is the minimum rating for a painful knee?

Under 38 CFR §4.59, a joint that is actually painful on motion is entitled to at least the minimum compensable rating for that joint, typically 10%. The examiner must document pain on active and passive motion and during weight-bearing. A 0% rating is appropriate only when the knee is asymptomatic on examination.

Does the bilateral factor apply to knee conditions?

Yes. When both knees carry service-connected ratings of 10% or higher, the bilateral factor under 38 CFR §4.26 applies. Both knee ratings are combined first, 10% of that combined value is added arithmetically, and the resulting bilateral group value enters the rest of the combined-ratings calculation. See our bilateral factor guide for the full explanation.

How does ROM measurement work for the knee?

VA examiners measure range of motion using a goniometer with the veteran seated or lying down. For flexion, 0 degrees is full extension; normal maximum flexion is about 140 degrees. For extension, any inability to fully straighten the knee is measured in degrees. The Diagnostic Code cutoffs (15, 30, 45, 60 degrees for flexion; 5, 10, 15, 20, 30, 45 degrees for extension) are the thresholds that trigger each rating tier.

What if my knee condition has worsened since my original decision?

A worsening knee condition supports a claim for an increased rating. File a Supplemental Claim with new evidence such as an updated MRI, surgical records, or a current private DBQ showing reduced range of motion or new instability findings. Changes in functional loss such as pain on use and post-exercise limitation can support a higher rating even if resting ROM measurements are borderline.

Sources

  1. 38 CFR §4.71a, Schedule of ratings: musculoskeletal system — Cornell LII / eCFR, retrieved 2026-06-09
  2. 38 CFR §4.59, Painful motion — Cornell LII / eCFR, retrieved 2026-06-09
  3. 38 CFR §4.26, Bilateral factor — eCFR, retrieved 2026-06-09
  4. 38 CFR §4.25, Combined ratings table — eCFR, retrieved 2026-06-09
  5. About VA disability ratings — VA.gov, retrieved 2026-06-09

This article is informational only and is not legal advice. See our editorial policy.