What Is Secondary Service Connection
A secondary service-connected condition is a disability that was caused by or aggravated by a condition you are already service-connected for. For example, if you have a service-connected knee injury that causes you to walk with an altered gait, and that altered gait leads to a hip condition, the hip condition can be claimed as secondary to the knee injury. The VA recognizes this chain of causation and will compensate you for the secondary condition.
This is one of the most underutilized avenues for increasing your overall disability rating. Many veterans only claim the conditions that are directly related to a specific event in service and overlook the downstream health effects that developed over time.
Common Secondary Conditions
Some of the most frequently approved secondary conditions include mental health conditions secondary to chronic pain (depression or anxiety caused by living with a painful service-connected condition), radiculopathy secondary to back conditions, peripheral neuropathy secondary to diabetes, sleep apnea secondary to PTSD or weight gain from limited mobility, migraines secondary to traumatic brain injury, and erectile dysfunction secondary to medications or mental health conditions.
The key question for any secondary claim is: Would you have this condition if it were not for your already service-connected disability? If the answer is yes or even probably, you likely have a viable secondary claim.
How to File a Secondary Claim
Filing a secondary claim uses the same VA Form 21-526EZ. When completing the form, specify that the new condition is secondary to an existing service-connected condition. Be explicit about which primary condition caused or aggravated the secondary condition. The VA will not make this connection for you. You must clearly state the relationship in your claim.
Evidence You Need
The most critical piece of evidence for a secondary claim is a nexus letter from a medical professional. This letter must explain the medical relationship between your primary service-connected condition and the secondary condition you are claiming. It should reference medical literature and your specific medical history. Additionally, submit all treatment records showing both conditions and any documentation that establishes the timeline of when the secondary condition developed.
- A nexus letter specifically addressing the secondary relationship
- Medical records showing treatment for both the primary and secondary conditions
- A personal statement describing how your primary condition led to the secondary one
- Any medical literature supporting the connection between the two conditions
Aggravation Basis Claims
Even if your secondary condition existed before it was aggravated by your service-connected disability, you may still be eligible. The VA recognizes aggravation claims where a pre-existing condition was made permanently worse by a service-connected condition. The rating in aggravation cases is based on the degree of worsening, not the total severity of the condition. This means you need evidence showing your baseline level before aggravation and the current severity after aggravation.
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