Diagnostic Code 8512 · 38 CFR §4.124a
The lower radicular group involves the C8 and T1 nerve roots in the brachial plexus, which control the intrinsic muscles of your hand and your ability to grip, pinch, and perform fine motor tasks. When these nerve roots are damaged, you lose hand dexterity, grip strength, and the ability to spread or close your fingers. This pattern is sometimes called Klumpke paralysis. Veterans may develop this from injuries that forcefully pull the arm upward, blast injuries, heavy falls, or other trauma that damages the lower portion of the brachial plexus.
| Rating | Criteria |
|---|---|
| 70% | |
| 60% | |
| 50% | |
| 40% | |
| 30% | |
| 20% |
Medical records documenting lower brachial plexus injury connected to service, Electromyography and nerve conduction studies identifying C8-T1 involvement, Grip strength and pinch strength measurements, Documentation of which hand is your dominant hand, Occupational therapy records showing functional hand limitations