Secondary Condition Claim · VASRD 5003
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 when it develops after Knee, Other Impairment of.
Misalignment causes wear
Primary condition · VASRD 5257
Knee, Other Impairment of
This diagnostic code covers knee instability - the knee buckling, giving out, or feeling loose during activity - separate from simple pain or arthritis. It's rated on how often and how severely the knee subluxates (partially dislocates) or shifts out of place, which is a different rating track than knee pain alone.
Secondary condition · VASRD 5003
Degenerative Arthritis
Degenerative arthritis (also called osteoarthritis) is the gradual breakdown of cartilage that cushions your joints, leading to pain, stiffness, swelling, and reduced range of motion. It's one of the most commonly service-connected conditions, especially for veterans whose military jobs involved heavy lifting, running, or repetitive joint stress.
The VA rates Degenerative Arthritis the same way whether it's claimed directly or as secondary to Knee, Other Impairment of — severity of Degenerative Arthritis itself determines the percentage.
Example combined rating
20% Knee, Other Impairment of + 10% Degenerative Arthritis = 28%
The VA combines ratings with Table I of 38 CFR 4.25, not simple addition — 20% and 10% combine to 28%, not 30%. These figures are illustrative; your actual rating for each condition depends on your own evaluation.
Primary condition
Full Knee, Other Impairment of guide
Secondary condition
Full Degenerative Arthritis guide
See how Knee, Other Impairment of and Degenerative Arthritis combine with the rest of your service-connected conditions using the official VA combined-ratings formula.
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