VA Claims for Knee Flexion Limitation

Why Most Veterans Leave Money on the Table with Knee Flexion Claims

The VA rates knee flexion limitation under Diagnostic Code (DC) 5260. Most veterans file for it, get 10%, and think that's the ceiling. They're wrong. If you've also got limited extension -- meaning your knee won't straighten all the way -- you qualify for a separate rating under DC 5261. Same knee, two ratings, stacked legally. The VA won't tell you this. Your VSO probably won't either. But 38 CFR §4.71a allows it when the diagnostic codes measure different functions. Here's the math that matters: A veteran with flexion limited to 45° gets 10% under DC 5260. If that same knee also won't straighten past 10° of residual bend, that's another 10% under DC 5261. Combined rating: 19%, rounded to 20%. That's $356.66 per month in 2026, not $180.42. Double the compensation for documentation the VA already has in your C&P exam notes -- if you know to request it.

The Two Diagnostic Codes You Need to Understand

DC 5260 rates limitation of flexion. Normal knee flexion is about 140°. The VA doesn't care how far you can flex -- it cares how far you *can't*. The scale: - 0% when flexion is limited to 60° - 10% when flexion is limited to 45° - 20% when flexion is limited to 30° - 30% when flexion is limited to 15° DC 5261 rates limitation of extension. Normal extension is 0° (fully straight leg). If your knee won't straighten, the deficit is measured in degrees of residual flexion: - 10% for extension limited to 10° - 20% for extension limited to 15° - 30% for extension limited to 20° - 40% for extension limited to 30° - 50% for extension limited to 45° Most C&P examiners measure both. The problem: the VA rater only assigns one code unless you explicitly request both. They assume pyramiding prohibition applies. It doesn't.

Why Stacking These Codes Is Legal

The pyramiding rule in 38 CFR §4.14 says you can't rate the same disability twice under overlapping codes. But the regulation carves out an exception: when separate codes evaluate "different manifestations" of the same condition, both apply. Flexion and extension are biomechanically distinct. Flexion is powered by the hamstrings and limited by quadriceps tightness or posterior capsule damage. Extension is powered by the quadriceps and limited by hamstring contracture or anterior capsule scarring. Different muscles, different pathology, different functional loss. The Board of Veterans' Appeals has upheld dual ratings in cases where both limitations are documented and measurable. The VA won't volunteer this interpretation. You have to argue it. If you're filing for a knee condition and your exam shows both deficits, request both codes in your claim. If you're already rated under one code, file for an increased rating and request the second code be added.

The Bilateral Factor Multiplier

If both knees are service-connected with any rating, 38 CFR §4.26 adds a bilateral factor. The VA combines your left and right knee ratings, then adds 10% of that combined value as a bonus. This pushes you into higher compensation brackets fast. Example: Staff Sergeant Morales has 10% for left knee flexion (DC 5260) and 10% for right knee extension (DC 5261) -- one rating on each knee. The VA combines them: 10% and 10% combine to a value of 19% on the rating table, then the bilateral factor adds 1.9% for 20.9%, which rounds to 20%. Now suppose Morales also documents 10% for left knee extension -- a second code on the left knee. His left knee alone combines to 19%, the right knee is 10%, and together they combine to 27%. The bilateral factor brings that to 29.7%, which rounds to 30%. That's $552.47 per month instead of $356.66. Adding that second code on one knee moved him from a combined 20% to 30% -- an extra $195.81 every month. This is why documentation matters. Your C&P exam likely already recorded both measurements. You just need to get both codes on your rating decision.

What the Exam Report Must Show

The C&P examiner measures range of motion (ROM) with a goniometer. The report will list flexion as "X degrees" and extension as "Y degrees." You need both numbers documented, even if one is normal. If your exam report says "flexion limited to 45°, extension 0° (normal)," you qualify for 10% under DC 5260 only. If it says "flexion limited to 45°, extension limited to 10°," you qualify for 10% under both DC 5260 and DC 5261. Sometimes the examiner measures but doesn't flag the extension deficit because it's "mild." Doesn't matter. Ten degrees of extension loss is 10% under DC 5261, period. If your exam shows it but your rating decision doesn't address it, file a supplemental claim with the exam report as evidence. The measurement is already in the VA's file. We cover how to read C&P exam reports and identify missed ratings in "A VA Disability Claims Manual for the Rest of Us" ($9.99 ebook). Chapter 6 walks through musculoskeletal codes line by line.

Real Example: How This Plays Out

Sergeant First Class Ramirez filed for left knee pain after a parachute landing injury. C&P exam showed flexion limited to 45° and extension limited to 10°. VA rater assigned 10% under DC 5260 for flexion. Ramirez didn't know to request DC 5261. Eighteen months later, Ramirez read the rating criteria and filed a supplemental claim. He cited the same C&P exam, pointed to the extension measurement, and requested DC 5261 be added. VA granted 10% for extension, effective from the original claim date. Combined rating jumped to 19%, rounded to 20%. Ramirez received about $3,170 in retroactive pay for the 18 months he'd been underpaid, plus the higher monthly rate going forward. Same evidence. Same exam. Different result because he knew to ask.

Bottom Line

If your knee doesn't bend fully *and* doesn't straighten fully, you qualify for two separate ratings on the same joint. The VA won't stack them automatically. You have to request both DC 5260 and DC 5261 by name, citing 38 CFR §4.71a. Check your C&P exam report for both measurements. If they're there and you're only rated under one code, file a supplemental claim or appeal now. This isn't creative interpretation -- it's reading the regulation the way it's written. Don't leave money on the table because the VA didn't connect the dots for you.