Secondary Condition Claim · VASRD 8528
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 Common Peroneal Nerve Paralysis when it develops after Deep Peroneal Nerve Paralysis.
Direct result of nerve impairment
Primary condition · VASRD 8523
Deep Peroneal Nerve Paralysis
The deep peroneal nerve controls the muscles that lift the foot and toes upward (dorsiflexion), and damage to it causes weakness or paralysis distinct from the more commonly discussed external popliteal (common peroneal) nerve. Because these nerve branches are frequently confused in medical records, clearly identifying the deep branch specifically matters for this claim.
Secondary condition · VASRD 8528
Common Peroneal Nerve Paralysis
Paralysis or weakness in the lower leg affecting foot lift (foot drop).
The VA rates Common Peroneal Nerve Paralysis the same way whether it's claimed directly or as secondary to Deep Peroneal Nerve Paralysis — severity of Common Peroneal Nerve Paralysis itself determines the percentage.
Example combined rating
20% Deep Peroneal Nerve Paralysis + 30% Common Peroneal Nerve Paralysis = 44%
The VA combines ratings with Table I of 38 CFR 4.25, not simple addition — 20% and 30% combine to 44%, not 50%. These figures are illustrative; your actual rating for each condition depends on your own evaluation.
Primary condition
Full Deep Peroneal Nerve Paralysis guide
Secondary condition
Full Common Peroneal Nerve Paralysis guide
See how Deep Peroneal Nerve Paralysis and Common Peroneal Nerve Paralysis combine with the rest of your service-connected conditions using the official VA combined-ratings formula.
Open the calculator