What Are Claims For VA Secondary Conditions? (2026)

What a VA Secondary Condition Is

VA secondary conditions are new or worsened medical or mental health concerns that are the direct result of a documented, service-related primary condition. For example, developing depression or anxiety as a result of chronic pain might prompt you to file a VA claim for the secondary condition.

How Secondary Ratings Raise Your Compensation

Certain VA secondary conditions can increase your total compensation. To understand how this works, you need to know a little bit about the VA's disability ratings.

This is a formula the Department of Veterans Affairs uses to assign ratings for those with service-related conditions. Instead of tallying up percentages, the VA calculates your rating based on your remaining efficiency as a whole person.

For instance, you’re assumed to start at 100% efficiency. If you have a primary rating for PTSD of 50%, you’ll be deemed 50% efficient. If, as a result of that PTSD, you develop migraines that qualify for a 30% rating, the VA will subtract 30% from your remaining 50%, leaving you at 15%.

That percentage rating is then added to your primary rating percentage, increasing your rating from 50% to 65%. This VA rating increase results in higher compensation.

Causation vs. Aggravation Explained

When assessing VA secondary conditions, it’s essential to understand the difference between causation and aggravation.

Causation means that your established primary condition directly led to a new condition. Aggravation, on the other hand, means that a pre-existing condition got worse (beyond its natural progression) because of a primary disability.

A causation claim will prompt the VA to consider the severity of the new condition on its own. With an aggravation claim, the agency may instead look at the difference between your baseline and worsened state.

Secondary vs. Presumptive Conditions

As noted, VA secondary conditions are brought on by an existing disability. Presumptive conditions are different.

Under the PACT Act presumptive conditions criteria, it isn’t necessary to prove that these conditions are service-related because they’re assumed to be so. Many types of cancers, for example, are presumptive conditions for service members who were exposed to Agent Orange.

Common Secondary Conditions by Primary Diagnosis

If you’ve already filed a disability claim for a primary condition, knowing some of the most common secondary conditions can help you decide whether it’s worthwhile to pursue additional compensation.

For mental health conditions like PTSD, anxiety, and depression, secondary conditions can include:

• Severe migraines
• Sleep apnea
• High blood pressure
• Digestive problems
• Temporomandibular joint (TMJ) disorder

Spinal and orthopedic conditions, meanwhile, can cause secondary issues like:

• Bowel or bladder dysfunction
• Erectile dysfunction
• Sciatica pain
• Depression or anxiety

And some of the secondary conditions that can arise from cancer include:

• Cardiovascular issues arising from treatment
• Osteoporosis
• Peripheral neuropathy
• Lymphedema
• Infertility and early menopause

You should always consult with an attorney for guidance on how to connect the primary condition to the secondary one and present your evidence as clearly as possible.

Three Things Every Secondary Claim Needs

The first thing you’ll need to demonstrate for your claim is that you have a primary service-connected disability. You must have an active rating status listed on your VA profile. This is the foundation on which the secondary claim is built.

You’ll also need a formal diagnosis of the secondary condition. Be prepared to provide clinical evidence showing that you have an active secondary condition. Gather all relevant medical records that outline your symptoms and the treatments you may be undergoing.

The next step is to get a VA nexus letter. This letter, which is written by a medical professional, will explain how the primary condition directly caused or aggravated the secondary one.

Why a Nexus Letter Matters

The nexus letter connects the dots between the primary condition that’s already been accepted as service-related and the new issues you’re dealing with. The letter must clearly state that direct secondary causation or aggravation is a factor; otherwise, the VA won’t recognize the new problems you’re facing as being secondary in nature.

Using Lay and Buddy Statements

VA buddy letters and lay statements serve to corroborate that the primary condition led to what you’re struggling with now. They help establish the timeline and the progression of symptoms, including subjective effects that aren’t easily measured by standard medical assessments.

Why Secondary Claims Get Denied

Most of the time, secondary claims get denied because veterans aren’t able to prove a clear medical link between the two conditions. You also run the risk of being denied if you’re missing a current diagnosis or you have an unfavorable compensation and pension (C&P) exam.

Securing Higher Disability Ratings by Filing Secondary Condition Claims

If your primary service-connected condition has caused a secondary one or aggravated an existing issue, you may be entitled to additional compensation from the VA. By understanding how secondary conditions are assessed and seeking reliable guidance, you can improve your chances of a successful claim.