Secondary Condition Claim · VASRD 8515
Median Nerve Paralysis Secondary to Ankylosis of the Thumb
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 Median Nerve Paralysis when it develops after Ankylosis of the Thumb.
Why Median Nerve Paralysis Is Linked to Ankylosis of the Thumb
Altered grip mechanics can stress wrist nerves.
Primary condition · VASRD 5228
Ankylosis of the Thumb
Ankylosis means the thumb joint is stiff or fixed, limiting grip and hand use.
Secondary condition · VASRD 8515
Median Nerve Paralysis
Damage to the median nerve causing weakness, pain, or paralysis in the hand.
Median Nerve Paralysis VA Rating Tiers
The VA rates Median Nerve Paralysis the same way whether it's claimed directly or as secondary to Ankylosis of the Thumb — severity of Median Nerve Paralysis itself determines the percentage.
Example combined rating
10% Ankylosis of the Thumb + 30% Median Nerve Paralysis = 37%
The VA combines ratings with Table I of 38 CFR 4.25, not simple addition — 10% and 30% combine to 37%, not 40%. These figures are illustrative; your actual rating for each condition depends on your own evaluation.
Evidence for a Median Nerve Paralysis Secondary Claim
- •Nerve conduction study results confirming the location and severity of the nerve damage.
- •Grip strength comparison between the affected and unaffected hand.
- •Evidence of occupational impact, such as difficulty performing fine motor tasks required for work.
Common questions about Median Nerve Paralysis secondary to Ankylosis of the Thumb
- Can Median Nerve Paralysis be service-connected as secondary to Ankylosis of the Thumb?
- Yes. Under 38 CFR § 3.310, a condition that is caused or aggravated by an already service-connected disability can be granted secondary service connection. Altered grip mechanics can stress wrist nerves. You'll need a current Median Nerve Paralysis diagnosis and a medical nexus opinion linking it to your service-conne…
- What VA rating can I get for Median Nerve Paralysis as a secondary condition?
- Median Nerve Paralysis is rated under VASRD diagnostic code 8515 using the same criteria whether it's a direct or secondary claim: possible ratings are 70%, 50%, 30%, 10%. The rating depends on the severity of Median Nerve Paralysis itself, not on the severity of Ankylosis of the Thumb.
- How does a secondary Median Nerve Paralysis claim affect my combined VA rating?
- The VA doesn't add ratings together. Using the official combined-ratings formula (38 CFR 4.25): a 10% rating for Ankylosis of the Thumb combined with a 30% rating for Median Nerve Paralysis (example figures) produces a combined rating of 37%, not 40%. Approving Median Nerve Paralysis as secondary still typically raise…
- What evidence do I need to service-connect Median Nerve Paralysis as secondary to Ankylosis of the Thumb?
- Strong evidence for the underlying Median Nerve Paralysis diagnosis includes: Nerve conduction study results confirming the location and severity of the nerve damage.; Grip strength comparison between the affected and unaffected hand.; Evidence of occupational impact, such as difficulty performing fine motor tasks req…
Primary condition
Full Ankylosis of the Thumb guide
Secondary condition
Full Median Nerve Paralysis guide
Estimate your combined rating
See how Ankylosis of the Thumb and Median Nerve Paralysis combine with the rest of your service-connected conditions using the official VA combined-ratings formula.
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