Veterans remember the exam. The room, the examiner, how long it took, whether the person seemed to be listening.
Almost nobody remembers the part of the report that decided the claim, because it sits at the end, runs three or four sentences, and reads like an afterthought. That part is the medical opinion. In most service connection claims it is the single piece of evidence the rating decision leans on hardest, and when a claim is denied, the denial is often just a restatement of it in different words.
This article is the follow-on to preparing for your C&P exam. That one was about the appointment. This one is about the document the appointment produces, why the claim usually cannot be granted without it, and why so many of them do not hold up when someone reads them closely.
What a VA medical opinion actually is
An examination report has two jobs, and they are not the same job.
The first is to record findings. Range of motion in degrees. Whether a breathing assistance device is required. Which symptoms are present and at what level of severity. That part gets captured on a Disability Benefits Questionnaire, and it drives the rating percentage.
The second job is the opinion. The opinion answers a legal question in medical language: is this condition related to service, or to a condition VA has already service connected, or was it made worse by one. The findings tell VA what is wrong with you. The opinion tells VA whether VA has to pay for it.
An opinion has two parts, and both are required:
The conclusion. Written in probability terms, almost always in one of the standard phrasings: “at least as likely as not (50 percent or greater probability),” or “less likely than not (less than 50 percent probability),” or “at least as likely as not aggravated beyond its natural progression by.”
The rationale. The explanation of how the examiner got to that conclusion from the evidence in the file. This is a free-text box, and it is where most of the trouble lives.
A conclusion without a rationale is not much of an opinion. It is a checked box. That distinction is the whole subject of the second half of this article.
Why an opinion is necessary at all
Direct service connection requires three things (38 C.F.R. § 3.303): a current disability, something that happened in service, and a link between the two.
You can usually prove the first two on paper and testimony. A current diagnosis comes from your treatment records. An in-service injury, illness, event, or exposure comes from your service records, your unit’s records, buddy statements, or your own account of what happened. No record of sick call does not end the inquiry, which is its own subject.
The third element is different. The link is usually a medical question, and lay evidence generally cannot carry it. You are competent to say your knee has hurt without a break since 2004. You are generally not competent to say the degenerative changes on the 2025 MRI were caused by a fall on a flight deck twenty years earlier. Someone with medical training has to say that, and that is what the opinion is for.
This is why the exam gets ordered in the first place. VA’s duty to assist includes providing an examination or opinion when one is necessary to decide the claim, under a four-part test (38 U.S.C. § 5103A(d); 38 C.F.R. § 3.159(c)(4)). When no exam was scheduled and a denial arrived anyway, that test is where to look, and it is covered separately.
Opinions come up in several other places besides direct service connection:
Secondary service connection. Whether a service-connected condition caused a new one (38 C.F.R. § 3.310(a)). Sleep apnea from weight gain caused by a service-connected orthopedic condition, depression from chronic pain, hypertension from a service-connected condition.
Aggravation of a nonservice-connected condition. Whether a service-connected condition made an unrelated condition worse. This is a separate theory with its own regulation, and it requires the examiner to describe the baseline level of severity before the aggravation (38 C.F.R. § 3.310(b)).
Preexisting conditions. Whether something noted when you entered service was worsened by service beyond its natural progression (38 C.F.R. §§ 3.304(b), 3.306).
Post-service diagnosis. A condition first diagnosed after discharge can still be service connected when the evidence shows it was incurred in service (38 C.F.R. § 3.303(d)). A gap of years between discharge and diagnosis is not a bar.
What the standard actually requires
“At least as likely as not” means a 50 percent probability or better. It does not mean more likely than not, and it does not mean the examiner has to be sure.
Where the positive and negative evidence reaches approximate balance, the benefit of the doubt goes to the veteran (38 U.S.C. § 5107(b); 38 C.F.R. § 3.102). You are not required to prove your case. The evidence for and against has to reach approximate balance, and that is a judgment about the weight of what is in the file, not a number anyone calculates.
That is worth holding onto when you read an opinion that says the evidence is “inconclusive” or that a link “cannot be established with certainty.” Certainty was never the standard.
How VA medical opinions actually get written
Understanding the production process explains most of the defects.
The request originates at the regional office. A rating official generates an exam request that names the conditions and states the questions the examiner is to answer. The examiner receives that request and access to your electronic claims file.
The examiner is either a clinician at a VA medical center or a clinician working for one of the private contractors VA uses for examinations. Depending on the condition, that can be a physician, a physician assistant, a nurse practitioner, or a psychologist.
Several things about that workflow matter to you:
The examiner answers the question asked, not the claim you filed. If the request asks only about direct service connection, most examiners will address only direct service connection, even when the file plainly raises a secondary theory.
The examiner reads the file that exists on that date. Private records you have not submitted yet are not in it. Lay statements sitting in your desk drawer are not in it.
Many opinions involve no appointment at all. Where the record already contains enough clinical information, the opinion is completed as a records review. Nobody examines you, and the first you hear of it is the decision.
These are produced at volume, on a template, under time pressure. The rationale box gets filled with whatever the examiner has time to write.
None of that is a conspiracy. It is a system built to process a very large number of claims, and it produces a large number of adequate opinions and a large number of inadequate ones. The Board of Veterans’ Appeals has additional tools when the record is contradictory or the question is genuinely complex, including specialist opinions from VA’s health administration and independent medical expert opinions (38 U.S.C. § 7109), but those come late in the process and only when someone asks.
What makes an opinion legally adequate
An adequate opinion does four things:
- It rests on an accurate and reasonably complete picture of the record, including your reported history.
- It answers the question actually raised by the claim.
- It states a conclusion in the correct probability terms.
- It explains the reasoning that connects the evidence to the conclusion.
The fourth is the one that determines how much weight the opinion carries. An opinion without a supporting explanation has little probative value regardless of who signed it, and the same is true of the private opinion you submit in response.
VA is not supposed to rate on an insufficient report. Where an examination report does not contain sufficient detail, or the diagnosis is not supported by the findings, the report is to be returned as inadequate for rating purposes (38 C.F.R. § 4.2). In practice that return often does not happen unless someone points at the defect.
The defects that show up most often
Here is what I look for first when I open an exam report, roughly in order of how often it turns up.
1. A conclusion with no rationale
“It is less likely than not that the veteran’s condition is related to service.” Then nothing. Or a rationale that restates the conclusion in different words: “because the condition is not related to service.”
An explanation that does not explain is the most common defect in the system and the easiest to identify. There is nothing in it to weigh.
2. Silence in the service records, used as the entire answer
“There is no evidence of treatment for this condition in the service treatment records.”
That sentence is often true and almost never sufficient on its own. The absence of a record is not affirmative evidence that nothing happened, and an opinion that rests on nothing more than that gap has not engaged with your reported history at all. Service members skip sick call constantly, for reasons anyone who has served understands, and the law does not treat a silent file as a denial of the event.
3. The veteran’s own account discarded
“The veteran reports symptoms since service, but this is not documented in the record.”
You are competent to describe what you felt and when it started. Continuity of symptoms you can personally observe is evidence, and it does not stop being evidence because a clinician did not write it down at the time. An examiner may weigh your account against the rest of the record, but an examiner who discards it because it is unaccompanied by contemporaneous documentation has applied the wrong rule.
4. Aggravation never addressed
This one costs veterans more claims than any other, and it hides in plain sight.
You file for a condition secondary to a service-connected disability. The opinion comes back: “less likely than not caused by the service-connected condition.” Correct answer, wrong scope. Causation and aggravation are two separate theories, and an opinion that answers only causation has left half the claim unanswered (38 C.F.R. § 3.310(b)). Where aggravation is addressed at all, the regulation requires a baseline level of severity before the worsening, and that is frequently missing too.
Read your opinion for the word “aggravat-” anything. If it does not appear, and your claim was filed as secondary, the opinion is incomplete on its face.
5. The examiner answered a different question
Multiple conditions claimed and only one addressed. An opinion about the left knee when the claim was the right. An opinion addressing whether the condition was caused by an in-service event when the theory was exposure. An opinion that resolves the diagnosis question and never reaches the relationship question.
Compare what the opinion answers against what you claimed. They diverge more often than you would expect.
6. A factual premise the record contradicts
“The veteran denies any injury in service.” “The veteran reports onset in 2019.” “No documented complaints prior to 2015.”
When the file contains a statement, a record, or a prior report that says otherwise, the opinion is built on a foundation that is not there. An opinion resting on an inaccurate factual premise carries no weight, but it will be used to deny your claim unless someone identifies the error and shows the contrary evidence.
This is the defect that most rewards a careful read of your own file. You often know the facts better than anyone who has touched the claim.
7. “Cannot be determined without resort to mere speculation”
Sometimes this is an honest answer. Medicine does not have an answer to every question.
But it cannot be a way to avoid answering. An examiner who reaches this conclusion is expected to explain why: what additional information would be needed, whether it can be obtained, and whether the limitation is in the record or in the state of medical knowledge itself. A bare refusal to answer, with no explanation, does not resolve anything and does not support a denial.
8. A rationale that contradicts the report’s own findings
The DBQ documents reduced range of motion, and the opinion describes a normal examination. The examiner records that you reported flare-ups three times a month, then writes that you deny flare-ups. The diagnosis section lists a condition the opinion says does not exist.
Internal contradictions like these are common in template-driven reports where sections get completed at different times or carried over from another document, and they undermine the whole report.
9. A standard higher than the law requires
“There is no objective evidence to support a connection.” “A relationship cannot be established with certainty.” “The evidence does not demonstrate that the condition was caused by service.”
Each of these applies a bar higher than “at least as likely as not.” Objective evidence is not required for every element. Certainty is not required at all. And an opinion phrased around whether service “caused” the condition may have skipped past the actual question, which is whether it is at least as likely as not related.
10. General medical literature substituted for your case
“Medical literature does not support an association between these conditions.”
A general proposition about populations is not an analysis of you. An adequate opinion applies whatever the literature says to the specific facts in your file: your exposure, your symptoms, your timeline, your other diagnoses. An opinion that never descends from the general to the particular has not done the work.
And one from the exam itself
If your claim is about the rating percentage rather than service connection, the analogous defect is a flare-up or repeated-use question answered with a refusal and no explanation. Functional loss during flare-ups has to be addressed, using your description of them if you are not flaring on exam day (38 C.F.R. §§ 4.40, 4.45, 4.59).
What to do when the opinion is inadequate
Get the report. You cannot evaluate what you have not read. Request your claims file, or pull the exam report through VA.gov, or have a representative obtain it. Read the opinion and the rationale word by word against the ten items above.
Identify the specific defect. “The examiner was wrong” is not an argument. “The examiner addressed causation and never addressed aggravation, which the claim raised and which 38 C.F.R. § 3.310(b) requires” is an argument. Specificity is what moves a claim.
Choose the right route based on where the claim sits. If a decision has not issued yet, argument and evidence can go in now. If a decision has issued, the three review lanes and their deadlines are covered here. A supplemental claim is the usual home for a new private opinion. A higher-level review can identify an error in the development of the claim. The Board can return a claim for a corrective opinion where the one in the file will not support a decision.
Consider answering it rather than only attacking it. Fighting for a corrective VA opinion can take a year or more, and there is no guarantee the second one is better than the first. A private medical opinion often moves faster, and it does not have to outweigh the VA opinion. It has to bring the evidence into approximate balance.
Hold your private opinion to the same standard. A letter that says “in my opinion this condition is related to service” and stops has the same defect as the opinion you are challenging. A useful private opinion identifies the records reviewed, states the standard in the correct probability terms, explains the medical reasoning, and addresses the unfavorable evidence rather than pretending it is not there, including the VA opinion itself. The strongest private opinions I see take the VA examiner’s rationale head on and explain why it does not hold.
The Bottom Line
The exam is the appointment. The opinion is the evidence, and the evidence is what decides the claim.
Most veterans never read the opinion in their own file. Of the ones who do, most read it looking for whether the answer was good or bad, and stop there. The more useful question is whether the answer was supported: did the examiner explain the reasoning, address the theory actually raised, and get the facts right.
A denial built on an opinion that does none of those things is not a final word on your condition. It is a document with a hole in it, and holes can be pointed at.
If your claim was denied and you have never read the exam report behind it, that is the first document to pull. The answer to why you were denied is usually in a paragraph you have not seen.
Bryan R. Blackmore is a VA-accredited attorney and former Attorney at the Board of Veterans’ Appeals. He served 24 years in the U.S. Coast Guard, including a deployment to Baghdad during Operation Iraqi Freedom. Mr. Blackmore is licensed in California and Virginia and represents veterans nationwide through Blackmore Veterans Law, P.C. This article is general information about the VA claims process, not legal advice about any individual claim.