Carpal Tunnel VA Rating: Your Dominant Hand Is Worth More and Most Veterans Miss It
Carpal tunnel syndrome (CTS) is rated under Diagnostic Code 8515 for the median nerve at 38 C.F.R. § 4.124a. It is one of the most common peripheral nerve conditions in veterans, especially those whose MOS involved repetitive hand/wrist motions: mechanics, communications, supply, medical, and administrative roles.
There are two things most veterans do not know about CTS ratings: the dominant hand gets significantly higher ratings at every level, and bilateral CTS triggers the bilateral factor under 38 C.F.R. § 4.26.
DC 8515 Rating Criteria (Median Nerve)
Complete paralysis of the median nerve means the hand inclined to the ulnar side, the index and middle fingers more extended than normally, considerable atrophy of the muscles of the thenar eminence, the thumb in the plane of the hand, inability to flex the distal phalanx of the thumb, weakened flexion of the index finger, inability to make a fist, and inability to oppose the thumb to the tips of the fingers.
Most veterans with CTS are rated at mild (10%) or moderate (30%/20%). The distinction between mild and moderate is the degree of functional impairment documented on EMG/NCS testing and clinical examination.
EMG/NCS Testing Is Everything
Electromyography (EMG) and nerve conduction studies (NCS) are the objective tests that determine your rating severity. The C&P examiner will look at your NCS results for median nerve motor and sensory latency, conduction velocity, and amplitude. Prolonged distal motor latency above 4.4 milliseconds and sensory latency above 3.5 milliseconds confirms CTS. The degree of slowing and any denervation on EMG determines whether it is characterized as mild, moderate, or severe.
If you have not had EMG/NCS testing, request it from your VA neurologist before your C&P exam. A clinical diagnosis of CTS based on Tinel and Phalen signs alone typically supports mild (10%). EMG/NCS confirmation with moderate slowing supports moderate (30%/20%). Evidence of axonal loss or significant denervation supports severe (50%/40%).
Bilateral CTS and the Bilateral Factor
If both hands are affected, each hand is rated separately under DC 8515. The dominant hand gets the higher column. Then 38 C.F.R. § 4.26 adds 10% to the combined value of both ratings before entering VA math.
Example: bilateral moderate CTS in a right-hand-dominant veteran. Right hand (dominant) at 30%, left hand (non-dominant) at 20%. VA math: 30% + 20% of remaining 70% = 30% + 14% = 44%. Bilateral factor adds 10% of 44% = 4.4, rounds to 4. Combined bilateral value = 48%, which rounds to 50% for VA purposes. That is $1,131.68/month for CTS alone at 2026 rates.
Service Connection Pathways
Direct service connection requires evidence that your CTS began during or was caused by military service. MOSs involving repetitive hand motions, vibrating equipment, or sustained grip (mechanics, supply, commo, admin) have strong nexus arguments.
Secondary service connection under 38 C.F.R. § 3.310 is common when CTS develops secondary to cervical spine conditions (C6-C7 nerve root compression can cause median nerve symptoms), diabetes (diabetic neuropathy affects the median nerve), or compensatory overuse (dominant hand overuse when the non-dominant hand is limited by a service-connected condition).
Do Not Confuse CTS with Cervical Radiculopathy
This is the most common mistake in peripheral nerve claims. CTS (median nerve at the wrist) and cervical radiculopathy (nerve root at the neck) can produce overlapping symptoms in the hand and arm. They are different conditions with different diagnostic codes and they can coexist. CTS is DC 8515 (median nerve). Cervical radiculopathy is DC 8510-8513 (upper radicular groups). If you have both, you can be rated for both — they are not pyramiding because they involve different anatomical sites.
Your EMG/NCS testing should differentiate between the two. The C&P examiner should document whether your symptoms are from the wrist (CTS), the neck (radiculopathy), or both.