What Is a Secondary Condition
A secondary condition is a disability that develops as a direct result of, or is aggravated by, a service-connected condition you already receive VA compensation for. The VA will rate and compensate a secondary condition separately if you establish a medical nexus showing the causal link between your primary service-connected condition and the new disability.
Common examples include arthritis developing in joints damaged by a service-connected back injury, or sleep apnea triggered by a service-connected sleep disorder. You don't need a separate service connection for the secondary condition; the nexus to your existing condition is sufficient.
How Secondary Conditions Get Rated
The VA rates secondary conditions using the same Schedule for Rating Disabilities that applies to primary conditions. When you file a claim for a secondary condition, the VA rates it independently and assigns it its own percentage rating: 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, or 100%. This rating is then added to your overall disability rating using the VA's combined rating table, which accounts for overlap between conditions.
For example, if you have a 30% service-connected knee injury and develop a secondary condition rated at 20%, your combined rating would be 44% (not 50%), because the VA doesn't simply add percentages together.
Establishing Nexus for Secondary Conditions
The critical step in a secondary condition claim is establishing nexus, the medical bridge between your primary condition and the new disability. You'll need either a nexus letter from a VA healthcare provider, a private physician, or during your Compensation and Pension (C&P) exam, the VA examiner may note the connection themselves.
The nexus statement should clearly explain the medical mechanism. For instance, "The veteran's service-connected low back pain has caused him to alter his gait and posture, which has led to degenerative changes in both knees," is stronger than a generic statement that the conditions are related.
Evidence and C&P Exams
When you file for a secondary condition, submit medical records showing the timeline and progression of both conditions. The VA may schedule a C&P exam where the examiner evaluates the secondary condition and documents any connection to your service-connected condition. Many veterans find it helpful to work with a VA-accredited VSO (Veterans Service Officer) to ensure all relevant medical evidence is included in the claim file before the C&P exam.
If the C&P examiner does not address the nexus between conditions, this creates a gap you can address in an appeal or supplemental claim.
Secondary Conditions vs. Aggravation
Don't confuse secondary conditions with aggravation. A secondary condition is entirely new and caused by your service-connected condition. Aggravation occurs when your service-connected condition itself gets worse after service (though the VA presumes non-aggravation in most cases unless you increase your rating request). Both can increase your overall compensation, but they're different claims pathways.
Common Questions
- Can I file for multiple secondary conditions at once? Yes. You can claim as many secondary conditions as you have medical evidence for. File them all in one claim or separate claims; the VA will evaluate each one independently using the same nexus standard.
- What if my secondary condition is rated 0%? A 0% rating means the condition is service-connected but does not currently meet the criteria for a higher rating. You can file a supplemental claim if the condition worsens, and the effective date for any increase starts from the date of your new claim, not the original secondary condition grant.
- Do I need an attorney to claim a secondary condition? No, but working with a VA-accredited VSO is free and highly recommended. If you appeal a denied secondary condition claim, you can hire an attorney or agent only after the VA issues a Statement of the Case.