Can a claim be granted without a nexus letter?

Yes. Many claims are granted on the service records and VA's own exam, and VA presumes a connection for some conditions after certain service. A nexus letter matters most when VA finds no link or never addressed it.

What if VA's examiner disagrees with my nexus letter?

VA weighs both opinions. The better-reasoned opinion, built on the fuller records, generally carries more weight, and when the evidence is evenly balanced the doubt goes to you (38 CFR 3.102).

Does a nexus letter set my rating?

No. It addresses service connection. The rating comes from how severe the condition is, usually measured at a VA exam or on a DBQ.

Can a nexus letter guarantee approval?

No. A clinician signs only when your records support the opinion, and VA decides the claim on all of the evidence.

Is a nexus letter enough to win a VA claim?

Updated October 4, 2026

No single document wins a VA claim. Service connection needs a current diagnosis, an event, injury or illness in service, and a link between them (38 CFR 3.303). A nexus letter supplies the link, and VA weighs it on the records reviewed and the reasoning. When the evidence is evenly balanced, VA resolves the doubt in your favor (38 CFR 3.102). A Commander Health nexus letter, a flat $500, is signed only when your records support the link.

The three pieces of service connection

A current disability, shown by a diagnosis.
An event, injury, exposure or illness in service.
A link between the two: the nexus (38 CFR 3.303), or for a secondary condition, a link to a condition that is already service connected (38 CFR 3.310).

How VA weighs a nexus opinion

VA looks at who wrote the opinion, what records they reviewed, and how well they explained the reasoning. A clear conclusion in VA's terms ("at least as likely as not") backed by reasoning tied to your records carries weight; a bare conclusion carries little.

When a VA examiner's opinion points the other way, VA weighs the two. If the evidence for and against is at least evenly balanced, reasonable doubt is resolved in your favor (38 CFR 3.102).

What a nexus letter cannot fix

No current diagnosis in your records.
No evidence of the in-service event, injury, exposure or illness.
An opinion built on a history your records contradict.
A secondary claim whose primary condition is not service connected.

Service connection is not the rating

A nexus letter addresses whether the condition is connected to service. The rating percentage comes from how severe the condition is, usually measured at a VA exam or recorded on a DBQ.

What Commander Health checks first

The free screen reads your records for the diagnosis, the in-service event, continuity of care and support for the link before you pay anything. If those are there, a licensed clinician reviews your file for a flat $500 and signs only if the records support the opinion. Commander Health reviews physical conditions only.

Frequently asked questions

Can a claim be granted without a nexus letter?: Yes. Many claims are granted on the service records and VA's own exam, and VA presumes a connection for some conditions after certain service. A nexus letter matters most when VA finds no link or never addressed it.
What if VA's examiner disagrees with my nexus letter?: VA weighs both opinions. The better-reasoned opinion, built on the fuller records, generally carries more weight, and when the evidence is evenly balanced the doubt goes to you (38 CFR 3.102).
Does a nexus letter set my rating?: No. It addresses service connection. The rating comes from how severe the condition is, usually measured at a VA exam or on a DBQ.
Can a nexus letter guarantee approval?: No. A clinician signs only when your records support the opinion, and VA decides the claim on all of the evidence.