What Evidence Does the VA Need to Approve a Disability Claim?

Many veterans assume that filing a VA disability claim simply requires explaining what happened during military service and describing current symptoms. In reality, the Department of Veterans Affairs evaluates claims based on specific types of evidence.

Understanding what evidence the VA looks for can help veterans build stronger claims and avoid some of the most common reasons for denial.

The Three Core Elements of a VA Disability Claim

Most successful VA disability claims include evidence that supports three key elements:

• A current medical diagnosis

• Evidence of an in-service event, injury, illness, or exposure

• A medical connection (nexus) between the current condition and military service

Each of these elements must be supported by credible documentation.

You can learn more about these requirements in the article “The Three Elements Every VA Disability Claim Must Prove.”

Medical Evidence

Medical evidence is often the most important part of a VA disability claim.

This may include:

• medical records from VA providers

• records from private doctors or specialists

• diagnostic tests such as imaging or sleep studies

• treatment history and clinical notes

• compensation and pension (C&P) exam reports

The VA typically requires a current diagnosis before it can evaluate a condition for disability compensation.

Service Records

Service records help demonstrate that an event or exposure occurred during military service.

These records may include:

• service treatment records

• personnel records

• deployment or duty assignments

• documentation of injuries or illnesses during service

In some cases, the event may not be fully documented in the service record. When that happens, additional evidence may still help support the claim.

Nexus Evidence

A nexus is medical evidence linking the current condition to military service.

This connection may be established through:

• medical opinions from treating physicians

• independent medical evaluations

• VA C&P exam reports

• medical literature supporting the relationship between conditions

Without a clear nexus, the VA may conclude that the condition is not service connected.

Lay Statements

Lay statements can also be important pieces of evidence.

These statements may come from:

• the veteran

• family members

• fellow service members

• coworkers or supervisors

Lay statements often describe symptoms, limitations, or events that may not appear in medical records. While they do not replace medical evidence, they can help provide important context.

Why Claims Are Often Denied

Many VA disability claims are denied because one of the required elements is missing or not clearly supported by the available evidence.

For example:

• a diagnosis may be unclear or incomplete

• service records may not clearly document the event

• the VA may conclude that the medical connection between service and the condition is not established

Understanding what evidence the VA looks for can help veterans identify gaps and strengthen their claims.

Learn More About the VA Claims Process

Veterans who want to better understand how the VA evaluates disability claims may find these guides helpful:

• Why VA Disability Claims Get Denied

• How to Read a VA Decision Letter

• What to Do After a VA Disability Claim Denial

These articles explain how the VA evaluates claims and what options veterans may have if a claim is denied.

Donald “Chris” Burnette is an attorney and Air Force veteran who focuses on federal law and matters before federal agencies, including the Department of Veterans Affairs. Before starting the Law Office of D.C. Burnette, PLLC, he served in federal leadership roles within the Department of the Interior and National Park Service. His practice helps veterans, federal employees, and mission-driven organizations navigate complex federal systems.