NeurologicalDC 8004

Parkinson's Disease

Parkinson's disease is rated under 38 CFR § 4.124a, Diagnostic Code 8004. It is a presumptive condition for Agent Orange exposure. The VA rates Parkinson's on an analogous basis using movement impairment, rigidity, and daily function.

VA Rating Levels

30%

Mild tremors and rigidity; able to perform daily activities with some difficulty.

60%

Moderate limitation — bradykinesia, tremors affecting most daily tasks; some assistance needed.

100%

Severe impairment — requires assistance for most daily activities; marked tremors, dysarthria, or postural instability.

Exam Tips & Key Evidence

→Parkinson's is a presumptive for Agent Orange (Vietnam/Thailand/Korean DMZ veterans)
→Claim secondary issues separately: dementia, depression, swallowing difficulty, urinary dysfunction
→VA may offer TDIU given the progressive nature of the disease

Commonly Related Conditions

TBI (Traumatic Brain Injury)DepressionUrinary Incontinence / Bladder Conditions

38 CFR Reference

38 CFR § 4.124a, Diagnostic Code 8004