Thoracic Outlet Syndrome

DC 8599-8510Neurological38 CFR 4.124a, DC 8599-8510

Compression of nerves or blood vessels between the collarbone and first rib, causing pain, numbness, and weakness in the arm and hand. The VA rates by analogy to nerve paralysis based on the severity of symptoms.

Rating Levels

You have severe incomplete paralysis of the dominant arm. Major vascular and neurological compromise causing near-total loss of arm function.

What the VA looks for

Severe vascular and neurological compromise
Near-total loss of arm function
Severe muscle atrophy documented
Multiple failed surgical or conservative treatments
Unable to perform most activities with affected arm

Common Pitfalls

⚠Not documenting whether the dominant or non-dominant arm is affected — ratings are higher for the dominant arm.
⚠Not getting vascular studies in addition to nerve conduction studies to show the full picture — thoracic outlet syndrome often has both neurological and vascular components.
⚠Not connecting to military activities like carrying heavy packs, overhead work, or neck and shoulder injuries during service.
⚠Not differentiating from cervical radiculopathy, which may be rated under a different code — make sure the examiner identifies the specific compression site.

Related DBQ Forms

DBQ Peripheral Nerves Conditions (Not Including Diabetic Sensory-Motor Peripheral Neuropathy)

View evidence checklist →See secondary conditions →

Condition Rating Guides

Understand what the VA looks for at each rating level — loading conditions…

Rating Levels

You have severe incomplete paralysis of the dominant arm. Major vascular and neurological compromise causing near-total loss of arm function.

What the VA looks for

Severe vascular and neurological compromise
Near-total loss of arm function
Severe muscle atrophy documented
Multiple failed surgical or conservative treatments
Unable to perform most activities with affected arm

Common Pitfalls

⚠Not documenting whether the dominant or non-dominant arm is affected — ratings are higher for the dominant arm.

⚠Not getting vascular studies in addition to nerve conduction studies to show the full picture — thoracic outlet syndrome often has both neurological and vascular components.

⚠Not connecting to military activities like carrying heavy packs, overhead work, or neck and shoulder injuries during service.

⚠Not differentiating from cervical radiculopathy, which may be rated under a different code — make sure the examiner identifies the specific compression site.