Parkinson's Disease: VA Presumptive Condition (Agent Orange)
VeteranHQ lists Parkinson's Disease as a presumptive condition in the Agent Orange and Other Herbicides group. The exposure it is tied to is: Herbicide Agent (Agent Orange/TCDD). The presumption is effective October 30, 2010. It is governed by 38 CFR § 3.309(e); 38 USC § 1116; VA Final Rule, 75 FR 53702 (September 1, 2010).
A presumption removes one requirement and one only: the veteran does not have to prove a medical link between the condition and service. Everything else still applies. There must be a current diagnosis, the service has to meet the requirements below, and VA decides the claim on the evidence in the record.
What qualifies: Parkinson's Disease
- Service era
- Vietnam Era (August 5, 1964 – May 7, 1975); Korean DMZ; Thailand
- Service location
- Republic of Vietnam, Thailand (specified bases), Korean DMZ, Johnston Island
- Exposure
- Herbicide Agent (Agent Orange/TCDD)
- Effective date
- October 30, 2010
- Filing deadline
- No statutory deadline; spouses/survivors may file DIC claims if veteran died before this presumptive was established
- Diagnostic code
- 8004
Service required for this presumption
Service in the Republic of Vietnam between January 9, 1962, and May 7, 1975, or other qualifying herbicide exposure locations. No minimum service duration required.
About this presumption
Parkinson's Disease is presumptively service-connected for veterans with qualifying herbicide exposure. TCDD and organochlorine pesticides are established dopaminergic neurotoxins. Epidemiological studies of Agent Orange-exposed veterans and dioxin-contaminated populations show elevated Parkinson's incidence. The condition involves progressive dopaminergic neuron loss in the substantia nigra, causing tremor, rigidity, bradykinesia, and postural instability. Note: Parkinsonism (parkinson-like syndrome) from other causes does NOT qualify under this entry — the diagnosis must be Parkinson's Disease specifically. See the separate Parkinsonism entry for Parkinson-like syndromes.
Evidence still needed
A presumption does not remove the evidence requirement. VA still needs a current diagnosis from a medical provider and service records that show the qualifying service above. What it removes is the medical opinion connecting the two.
Service records; neurologist diagnosis of Parkinson's Disease (clinical diagnosis based on cardinal motor features: tremor at rest, bradykinesia, rigidity, postural instability); response to levodopa therapy supports diagnosis; DaTscan imaging if available; must rule out drug-induced parkinsonism.
Controlling legal authority
38 CFR § 3.309(e); 38 USC § 1116; VA Final Rule, 75 FR 53702 (September 1, 2010)
Related on VeteranHQ
- Paralysis agitans: 38 CFR Part 4 rating criteriaThe percentage tiers VA applies once service connection is established, under DC 8004.
- VA presumptive conditions, explainedHow presumptive service connection works, and what it does not cover.
- All presumptive conditions by exposureAgent Orange, PACT Act, Camp Lejeune, Gulf War, and ionizing radiation.
Questions About Parkinson's Disease and Presumptive Service Connection
Is Parkinson's Disease a VA presumptive condition?
Yes. VeteranHQ lists Parkinson's Disease as presumptive in the Agent Orange and Other Herbicides group, effective October 30, 2010, under 38 CFR § 3.309(e); 38 USC § 1116; VA Final Rule, 75 FR 53702 (September 1, 2010). A presumption removes the requirement to prove a medical link to service. A current diagnosis and qualifying service are still required, and VA decides the claim.
What service qualifies for the Parkinson's Disease presumption?
Service in the Republic of Vietnam between January 9, 1962, and May 7, 1975, or other qualifying herbicide exposure locations. No minimum service duration required. Service era: Vietnam Era (August 5, 1964 – May 7, 1975); Korean DMZ; Thailand. Service location: Republic of Vietnam, Thailand (specified bases), Korean DMZ, Johnston Island.
What evidence is still needed for a Parkinson's Disease claim?
Service records; neurologist diagnosis of Parkinson's Disease (clinical diagnosis based on cardinal motor features: tremor at rest, bradykinesia, rigidity, postural instability); response to levodopa therapy supports diagnosis; DaTscan imaging if available; must rule out drug-induced parkinsonism. A presumption removes the requirement to prove a medical link to service. A current diagnosis and qualifying service are still required, and VA decides the claim.
Is there a filing deadline for Parkinson's Disease?
No statutory deadline; spouses/survivors may file DIC claims if veteran died before this presumptive was established
VeteranHQ publishes VA rules and the citations behind them. It does not prepare, file, or represent claims, and nothing here is legal advice or a prediction of what VA will decide.