Secondary Condition Claim · VASRD 5106
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 Hand, Loss of Use when it develops after Muscle Group VII, Forearm Muscles.
Forearm muscles control finger strength
Primary condition · VASRD 5307
Muscle Group VII, Forearm Muscles
Damage to muscles in the forearm that affect wrist and finger movement.
Secondary condition · VASRD 5106
Hand, Loss of Use
Complete inability to use the hand for grasping or manipulation.
The VA rates Hand, Loss of Use the same way whether it's claimed directly or as secondary to Muscle Group VII, Forearm Muscles — severity of Hand, Loss of Use itself determines the percentage.
Example combined rating
10% Muscle Group VII, Forearm Muscles + 70% Hand, Loss of Use = 73%
The VA combines ratings with Table I of 38 CFR 4.25, not simple addition — 10% and 70% combine to 73%, not 80%. These figures are illustrative; your actual rating for each condition depends on your own evaluation.
Primary condition
Full Muscle Group VII, Forearm Muscles guide
Secondary condition
Full Hand, Loss of Use guide
See how Muscle Group VII, Forearm Muscles and Hand, Loss of Use combine with the rest of your service-connected conditions using the official VA combined-ratings formula.
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