Secondary Condition Claim · VASRD 5242
A condition caused or aggravated by an already service-connected disability can be granted its own service connection as a secondary condition under 38 CFR § 3.310. Here's how that works for Degenerative Arthritis of the Spine when it develops after Limitation of Extension of the Leg (Knee).
Leg imbalance may strain the lumbar spine.
Primary condition · VASRD 5261
Limitation of Extension of the Leg (Knee)
Knee extension limits your ability to fully straighten your leg. This diagnostic code covers a specific, measurable limitation: how far you're able to straighten the knee. Unlike general knee pain, this rating is driven almost entirely by a precise angle measurement, so how and when that measurement is taken can significantly affect the outcome.
Secondary condition · VASRD 5242
Degenerative Arthritis of the Spine
Wear and tear in the spine causing stiffness, pain, or nerve issues.
The VA rates Degenerative Arthritis of the Spine the same way whether it's claimed directly or as secondary to Limitation of Extension of the Leg (Knee) — severity of Degenerative Arthritis of the Spine itself determines the percentage.
Example combined rating
10% Limitation of Extension of the Leg (Knee) + 20% Degenerative Arthritis of the Spine = 28%
The VA combines ratings with Table I of 38 CFR 4.25, not simple addition — 10% and 20% combine to 28%, not 30%. These figures are illustrative; your actual rating for each condition depends on your own evaluation.
Primary condition
Full Limitation of Extension of the Leg (Knee) guide
Secondary condition
Full Degenerative Arthritis of the Spine guide
See how Limitation of Extension of the Leg (Knee) and Degenerative Arthritis of the Spine combine with the rest of your service-connected conditions using the official VA combined-ratings formula.
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