Most veterans file for the condition that bothers them most and stop there. But one service-connected condition frequently causes others, and those secondary conditions are one of the most overlooked ways to raise a combined rating. This guide explains how secondary claims work.
What a secondary condition is
A secondary condition is one caused or aggravated by a condition that is already service-connected (38 CFR 3.310). The advantage is significant: you do not have to connect the new condition to service directly. You connect it to a condition the VA has already accepted.
Two ways a secondary claim can succeed:
- Causation. The service-connected condition caused the new one.
- Aggravation. The service-connected condition made a pre-existing or separate condition worse.
Both are valid paths.
Common secondary condition chains
Some of the most frequently claimed secondary connections:
- Sleep apnea secondary to PTSD or another mental health condition
- Depression or anxiety secondary to chronic pain from a physical condition
- Radiculopathy (nerve pain) secondary to a back condition
- Knee, hip, and shoulder problems secondary to an altered gait from a leg or back condition
- Gastrointestinal issues secondary to long-term medication use for a service-connected condition
Why secondaries raise your combined rating
The VA does not add ratings together. It uses "VA math" (38 CFR 4.25), applying each rating to your remaining "healthy" percentage. Because of how this works, adding conditions can push you across a bracket, and the jumps at higher levels are worth real money. Moving from 90 to 100 percent, for example, is a large monthly increase.
What the evidence needs to show
For each secondary claim:
- A current diagnosis of the secondary condition
- Identification of the service-connected condition it stems from
- A medical opinion (nexus letter) explaining causation or aggravation, in VA terms
A real-world example
A veteran rated for a back condition assumed that was the end of it. In fact, chronic back pain had led to both radiculopathy in his leg and ongoing depression. A provider connected both as secondary to the back condition, and each was rated separately, raising his combined total.