What Is a Pre-Existing Condition
A pre-existing condition is a medical condition you had before entering active military service. The VA will still compensate you for it if you can prove it was aggravated by your military service beyond its natural progression. This is a critical distinction because the VA doesn't automatically deny claims based on conditions that existed before you served.
The key to winning a pre-existing condition claim is establishing a nexus between your military service and the worsening of that condition. You need medical evidence showing the condition got worse during service in a way that wouldn't have happened naturally. For example, if you had mild knee pain before service and your job required heavy lifting and running, evidence that your knee deteriorated significantly during those years can support your claim.
How Pre-Existing Conditions Affect Your VA Rating
When you file a VA disability claim for a pre-existing condition, the Compensation and Pension (C&P) examiner will review your military entrance medical exam (MEPS) records and compare them to your current condition. The VA uses the Diagnostic Code system to rate conditions on a scale of 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, or 100%. Your rating determines your monthly benefit amount.
The examiner needs specific evidence to support aggravation:
- Your baseline health status at the time you entered service (documented in your MEPS exam or service medical records)
- Evidence of worsening during your service years (medical visits, treatment records, buddy statements, or performance logs showing functional decline)
- Current medical records showing your condition today
- A medical provider's statement that the condition worsened beyond what would naturally occur
Building Your Pre-Existing Condition Claim
A nexus letter from a medical provider is your strongest evidence. This is a statement from a VA-contracted physician, private doctor, or other qualified medical professional explaining the medical relationship between your military service and the aggravation of your pre-existing condition. The examiner will weight this heavily in their decision.
If you don't have a nexus letter, consider requesting one from your current VA provider or a private physician familiar with your medical history. Some conditions have presumptive status, but most pre-existing aggravation cases require individualized evidence.
A Veterans Service Officer (VSO) can help you gather the right documentation and present it effectively. VSO representation is free, and these accredited representatives know exactly what the VA needs to see. They can also file for Presumption of Soundness, which shifts the burden to the VA if your condition worsened during service.
If Your Claim Is Denied
If the VA denies your pre-existing condition claim, you have appeal rights. You can submit new evidence showing aggravation and request a higher-level review within one year of the denial. Many veterans succeed on appeal because they gather stronger medical documentation or obtain a nexus letter after the initial decision.
The appeals process gives you three lanes: a supplemental claim (fastest if you have new evidence), a higher-level review (no new evidence needed, different rater reviews your file), or a Board of Veterans Appeals (longest process but gives you a hearing opportunity). Choose based on what evidence you have and your timeline.
Common Questions
- Can I get paid for a pre-existing condition if I didn't mention it at MEPS? Yes. If the condition worsened during service, you can still claim aggravation. However, if you deliberately hid a condition at MEPS, you may face issues. Be honest in your claim documents and let your medical evidence speak.
- What counts as "aggravation beyond natural progression"? The VA expects to see a noticeable worsening that exceeds what would normally happen with time and aging. A back condition that slightly stiffens in middle age is natural progression. A back condition that required surgery after heavy-duty military work is aggravation. Your C&P examiner makes this determination, which is why medical documentation matters.
- How far back can I file a pre-existing condition claim? You can file at any point during your lifetime, but benefits are typically paid back only to the filing date, not retroactively to your service. File as soon as you recognize the condition was aggravated by service.
Related Concepts
- Presumption of Soundness - A legal principle that assumes you were in sound health at discharge unless proven otherwise, useful for pre-existing aggravation claims
- Aggravation - The worsening of a pre-existing condition due to military service, the core requirement for compensation