EDUCATIONAL TOOL ONLY. Not legal or medical advice. Not affiliated with the VA.
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Mustard Gas / Lewisite Exposure VA Disability Rating
DC Various | 38 C.F.R. § 3.316 | M21-1, Part IV.ii.1.D
OVERVIEW
Full-body exposure to mustard gas or Lewisite during military testing provides presumptive service connection for chronic conjunctivitis, keratitis, corneal opacities, scar formation, nasopharyngeal/laryngeal cancer, squamous cell carcinoma of the skin, chronic laryngitis, bronchitis, emphysema, asthma, and COPD.
RATING CRITERIA (1 LEVELS)
Rated on resulting conditions
Toxic exposure is not itself rated. Each resulting condition is rated under its own diagnostic code. The exposure provides the nexus for presumptive service connection.
KEY EVIDENCE TO GATHER
-Service treatment records
-Current medical diagnosis and treatment records
-Buddy/lay statements
-Prescription history
-Employment impact documentation
-Any relevant diagnostic testing
C&P EXAM TIPS (5)
1.Bring all relevant medical records and a written list of symptoms.
2.Report your worst days, not your best. The VA rates based on overall impairment.
3.Document how the condition affects daily activities, work, and relationships.
4.Mention all medications and their side effects.
5.Bring buddy statements from people who observe your symptoms.
EDUCATIONAL TOOL ONLY. NOT LEGAL OR MEDICAL ADVICE.
NOT AFFILIATED WITH THE U.S. DEPARTMENT OF VETERANS AFFAIRS.
CLAIM RECON 2026
NOT AFFILIATED WITH THE U.S. DEPARTMENT OF VETERANS AFFAIRS.
CLAIM RECON 2026