Denied for 'No Nexus': What the Decision Is Saying

The three elements

Caluza v. Brown, 7 Vet. App. 498 (1995) sets out those elements. A denial should say which one VA found missing. When the missing element is the third, the first two are effectively conceded, which narrows what the review has to address.

1. A current disability shown by medical evidence.
2. An in-service event, injury, or disease.
3. A link between the two — the nexus.

Ways the nexus element is satisfied

• A medical opinion stating it is at least as likely as not that the condition is related to service, with a reasoned explanation. Under 38 CFR § 3.102, when the evidence is in approximate balance the benefit of the doubt goes to the claimant.
• Continuity of symptomatology for chronic diseases listed in 38 CFR § 3.309(a), under the pathway in 38 CFR § 3.303(b).
• A presumption — herbicide exposure, Gulf War undiagnosed illness, PACT Act presumptives, radiation, and others — which substitutes for individualized nexus proof when the criteria are met.
• Secondary service connection under 38 CFR § 3.310, where the link is to an already service-connected condition rather than directly to service.

Why a lay statement alone is usually not enough on this element

A veteran is competent to report what they experienced and observed — symptoms, when they began, how they have continued. Under Jandreau v. Nicholson, 492 F.3d 1372 (Fed. Cir. 2007), lay evidence can also establish a diagnosis in limited circumstances. But for most conditions the medical question of causation requires medical expertise, which is why 'no nexus' denials are typically answered with a medical opinion rather than additional lay statements alone.

This site does not provide templates or drafting language for medical opinions or lay statements. What a competent opinion needs is a review of the relevant records, a clearly stated conclusion, and the examiner's own reasoning.

Choosing the lane

If a qualifying opinion is already in the file and the decision did not address it or gave no reason for rejecting it, that is an argument about the existing record — Higher-Level Review. If the opinion does not yet exist, obtaining one and filing a Supplemental Claim under 38 CFR § 3.2501 is the lane that accepts it. Filing within one year of the decision preserves the effective date either way.

What tends to go wrong

• ×Refiling the same evidence that was already reviewed and expecting a different result.
• ×Submitting an opinion that states a conclusion without explaining the reasoning behind it.
• ×Overlooking a presumptive pathway that would remove the nexus question entirely.
• ×Missing that the condition may be secondary to an already service-connected disability under 38 CFR § 3.310.

Frequently Asked Questions

References & sources

1. 38 CFR § 3.303 — Principles relating to service connection — eCFR
2. 38 CFR § 3.310 — Secondary service connection — eCFR
3. Caluza v. Brown, 7 Vet. App. 498 (1995) — U.S. Court of Appeals for Veterans Claims