Confusing VA Claim Terms Explained: 10 to Know

CCK Law: Our Vital Role in Veterans Law

Confusing VA claim terms such as nexus, pyramiding, VA math, severance, and functional loss are shorthand labels for specific legal standards, and each one carries rules that can change a rating. Rating decisions from VA and the Board of Veterans’ Appeals (BVA) use these words without defining them, which leaves many veterans unsure whether a decision was correct. This guide explains 10 of the most commonly misunderstood terms and identifies the regulation or court case behind each one.

Key points of this article include:

• For VA purposes, “benefits” means compensation for a loss of earning capacity, not a reward for service. 38 USC § 1155 directs that ratings reflect average impairment of earning capacity in civil occupations.
• The bilateral factor is not a flat 10 percent added to a combined rating. It is 10 percent of the combined value of the paired-extremity ratings, added before any further combination.
• VA can sever service connection only where the evidence shows clear and unmistakable error, and the burden of proof sits with the government.
• After service connection has been in effect for 10 years, it generally cannot be severed at all absent fraud or a lack of qualifying service.

Terms covered in this guide:

• Nexus
• Presumptive condition
• Benefits
• Rating schedule
• Bilateral factor
• Pyramiding
• VA math
• Severance
• Reduction
• Functional loss

What Is a “Nexus” in a VA Disability Claim?

A nexus, or medical nexus, is a medical opinion linking a veteran’s current diagnosed condition to something that happened during military service. A nexus is one of three elements required for direct service connection, along with a current diagnosis and an in-service occurrence.

The U.S. Court of Appeals for the Federal Circuit set out that three-element test in Shedden v. Principi, 381 F.3d 1163 (Fed. Cir. 2004). The court identified a present disability, in-service incurrence or aggravation of a disease or injury, and a causal relationship between the two. In plain terms: a veteran can be sick now and can prove something happened in service, and the claim will still fail without evidence tying the two together.

Nexus opinions generally must come from a trained medical professional.

“Laypersons don’t have the necessary training in VA’s eyes to say what caused a veteran’s disability,” says Ethan Muckelbauer, a lead advocate at CCK Law. “So it’s important to get medical language from a private doctor or a VA examiner. What VA’s looking for is whether the condition was ‘at least as likely as not’ caused by service or another service-connected disability.”

“At least as likely as not” is a 50 percent threshold, not a majority-of-the-evidence threshold. When the favorable and unfavorable evidence is in approximate balance, the tie goes to the veteran under 38 CFR § 3.102 and 38 USC § 5107(b).

Looking for more explanations of confusing VA terms? Watch CCK Law attorneys Maura Black and Ethan Muckelbauer discuss the terms every veteran should know:

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What Is a “Presumptive Condition” in a VA Disability Claim?

A presumptive condition is a condition VA automatically recognizes as related to service when a veteran served in a specified place during a specified period. A presumption relieves the veteran of proving one or more elements of service connection, most often the nexus or the in-service exposure.

“Basically, if there’s a presumption that presumes a certain condition is related to radiation exposure or herbicide exposure — or if you need to demonstrate exposure — the law might take care of that by saying that your places and times of service are consistent with such exposure that the law will presume it,” says Maura Black, partner at CCK Law.

For example:

• Veterans who served during the Vietnam War were often exposed to the herbicide Agent Orange, which is now associated with a range of health effects.
• Say a veteran served in a qualifying location during a qualifying period and later developed an Agent Orange-related condition.
• VA’s Agent Orange presumptions may apply, and VA may grant service connection without requiring the veteran to prove exposure or supply a nexus opinion.

Presumptions are narrow. Only service in specific areas during specific periods qualifies, and only listed conditions are covered. 38 CFR §§ 3.307 and 3.309 set out both lists. A veteran who does not fit a presumption may still pursue direct service connection on the evidence.

What Does VA Mean by “Benefits”?

When VA uses the term “benefits” or “disability benefits,” it means compensation for a loss of earning capacity caused by a service-connected condition. VA is not measuring how much a veteran suffered or how well the veteran served. It is estimating how much the condition reduces the average person’s ability to earn a living.

“People hear the term ‘VA benefits,’ and they kind of think of a reward for good behavior or good service — or maybe some kind of social benefit or handout,” says Ethan Muckelbauer. “But in fact, the percentages they assign are to compensate you for your loss of earning capacity, your lessened ability to earn a living. In that sense, VA benefits are probably closer to workers’ compensation benefits after an injury on the job.”

That framework comes from statute. 38 USC § 1155 directs that ratings be based, as far as practicable, on the average impairment of earning capacity resulting from an injury in civil occupations. 38 CFR § 4.1 repeats the same standard inside the rating schedule.

Generally, the greater the estimated loss in earning capacity, the higher the rating and the greater the compensation. A 20 percent rating reflects VA’s estimate that the average person with those findings loses about 20 percent of earning capacity. It is an average, not an individualized measurement of one veteran’s paycheck.

This distinction has a practical use. Evidence about how a condition affects work capacity is directly relevant to a rating, which is why records of missed work, restricted duties, and accommodations often matter as much as clinical findings when filing a claim.

Want more context on VA disability compensation? Watch CCK Law Founding Partner Robert Chisholm discuss why disability benefits are not a form of charity:

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What Is the VA “Rating Schedule”?

The VA rating schedule is the set of regulations, published at 38 CFR Part 4, that tells VA how to evaluate each service-connected condition. Every ratable condition has a diagnostic code, and each diagnostic code lists the findings required for each percentage level.

For example:

• Psychiatric conditions are currently evaluated at 0, 10, 30, 50, 70, or 100 percent under the General Rating Formula for Mental Disorders at 38 CFR § 4.130.
• When VA evaluates a psychiatric condition, it must compare the documented symptoms and functional impairment against those criteria.
• A 70 percent rating for post-traumatic stress disorder (PTSD) means VA concluded the documented picture most closely matches the 70 percent criteria, not that the veteran exhibited every symptom listed there.

A veteran who believes a rating understates a condition should read the criteria for the next level up and compare them against the medical record. Two questions are usually decisive: does the record already contain findings that meet the higher criteria, and did VA address those findings? Where the answer to the first is yes and the second is no, there is a concrete basis for an appeal.

“If you have questions or concerns about how VA is rating your disabilities, the rating schedule is a great place to look to see what the criteria are for the higher rating or the lower rating,” says Maura Black.

What Is the VA “Bilateral Factor”?

The bilateral factor is an additional amount VA adds when a veteran has compensable disabilities affecting both arms, both legs, or paired skeletal muscles. Under 38 CFR § 4.26, VA combines the ratings for the right and left sides first, then adds 10 percent of that combined value — not a flat 10 points, and not 10 percent of the veteran’s overall combined rating.

“The ‘bilateral factor’ is something VA applies when both sides of your body are affected by a disability,” says Ethan Muckelbauer. “So if both legs, both arms, or both feet are impaired, VA is supposed to add an extra percentage to reflect the added difficulty of both sides of your body being impaired.”

The order of operations matters:

• Combine the paired-extremity ratings using the combined ratings table at 38 CFR § 4.25.
• Add 10 percent of that combined value. The regulation is explicit that this amount is added, not combined.
• Treat the result as a single disability for ordering by severity and for all further combinations.
• Combine with the veteran’s remaining disabilities, then round to the nearest 10 percent.

The regulation’s own example makes the scale clear: with ratings of 60, 20, 10, and 10 percent, where the two 10 percent ratings are bilateral, the bilateral pair combines to 19 and becomes 21 after the factor is added. The bilateral factor is a meaningful adjustment, but it is rarely a full 10 points.

The factor is not available unless there is a compensable disability in each of two paired extremities or paired skeletal muscles. VA is supposed to apply it automatically, but errors occur. Veterans with disabilities on both sides of the body should check whether the code sheet reflects it.

What Is “Pyramiding” in a VA Disability Claim?

Pyramiding is the prohibited practice of compensating a veteran more than once for the same symptom or functional impairment. 38 CFR § 4.14 states that evaluation of the same disability under various diagnoses is to be avoided. VA pyramiding rules exist to prevent double payment for one impairment.

For example:

• PTSD and traumatic brain injury (TBI) are distinct conditions that share symptoms, including sleep impairment.
• Say a veteran has both conditions and sleep impairment is a prominent symptom of each.
• The veteran cannot be rated for that same sleep impairment under both diagnoses. That would be pyramiding.
• The sleep impairment must be counted under one diagnosis — either PTSD or the TBI evaluation — and not both.

The rule is narrower than it first appears. One injury can produce several distinct impairments, and VA can rate each of them separately. In Esteban v. Brown, 6 Vet. App. 259 (1994), the U.S. Court of Appeals for Veterans Claims (CAVC) addressed a veteran whose in-service facial injury left a painful scar, disfigurement, and difficulty chewing.

“Eventually, the court clarified that because one injury resulted in three distinct manifestations of symptoms — the scar, the disfigurement, and the difficulty chewing — it would not result in pyramiding,” says Maura Black.

The controlling question in a pyramiding dispute is therefore not how many diagnoses a veteran has. It is whether the symptomatology under each rating is duplicative or overlapping. Where a rating decision denies a separate evaluation on pyramiding grounds without identifying which specific symptom is being counted twice, that reasoning is worth examining closely.

Want to know more about pyramiding? Watch Accredited VA Claims Agent Rachel Foster discuss the most important details:

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What Is “VA Math”?

“VA math,” sometimes called the whole person method, is the formula VA uses to calculate a combined disability rating when a veteran has more than one service-connected condition. It is defined at 38 CFR § 4.25. VA does not add ratings together.

Instead, each successive rating is applied to the portion of earning capacity that has not already been accounted for. VA math is why a 50 percent rating and a second 50 percent rating do not produce 100 percent.

Here is that calculation step by step for a veteran with a 50 percent rating for gastroesophageal reflux disease (GERD) and a 50 percent rating for PTSD:

The practical consequence is that combined ratings get harder to move as they rise. A veteran already at 80 percent has only 20 percent of earning capacity left for VA to apply new ratings against, so a new 30 percent rating adds roughly 6 points before rounding. Veterans approaching 100 percent often need a substantial new rating, or a route outside the combined table such as total disability based on individual unemployability, to move the total.

Free tools can estimate a combined rating without doing the arithmetic by hand. CCK Law’s VA Disability Calculator applies the § 4.25 table, including the bilateral factor.

For more on VA math, watch CCK Law appellate attorney Nick Scripter and colleagues walk through the specifics:

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What Is “Severance” of Service Connection?

Severance is VA removing service connection for a condition entirely, which ends compensation for that condition. VA cannot do this simply because it now views the evidence differently. Under 38 CFR § 3.105(d), service connection is severed only where the evidence establishes that the original grant was clearly and unmistakably erroneous, and the burden of proof rests on the government.

“A ‘severance’ is when VA wants to remove service connection for a condition entirely,” says Maura Black. “It is effectively VA saying that service connection is not in order and should not have been granted in the first place.”

That standard is demanding. Clear and unmistakable error means an error so plain that reasonable minds could not differ about the outcome had it not been made. A later medical opinion that simply disagrees with an earlier one does not meet it. The regulation does allow a change in diagnosis to support severance, but only where a physician or other proper medical authority certifies that, in light of all accumulated evidence, the original diagnosis was clearly erroneous.

VA also owes the veteran process before severance takes effect:

• A rating proposing severance that sets out all material facts and reasons
• Notice to the veteran at the latest address of record
• 60 days to submit evidence showing service connection should be maintained
• An opportunity to request a hearing

Veterans who receive a severance proposal should treat the 60-day window as the main event rather than waiting to appeal later. The government carries the burden at this stage, and evidence submitted during the window is evidence VA must address.

What Is a VA Rating “Reduction”?

A reduction is VA lowering an existing disability rating while service connection stays in place. The veteran remains service connected for the condition, but monthly compensation decreases. Reductions most often follow a routine future examination that VA reads as showing improvement.

“A ‘reduction’ is when VA institutes a process to reduce a service-connected disability rating that’s already in place,” says Maura Black. “For instance, sometimes exams will reveal that there’s been some improvement in a veteran’s condition. In response, VA will — usually incorrectly — propose to reduce that person’s rating.”

VA cannot reduce a rating without following 38 CFR § 3.105(e): a written proposal, notice, and a period for the veteran to respond with evidence or request a predetermination hearing.

Several defenses may apply even where an examination shows some improvement. Ratings in effect for five or more years are treated as stabilized under 38 CFR § 3.344, which means VA must review the full medical history rather than a single examination and must find sustained material improvement under the ordinary conditions of life. Under 38 CFR § 3.951(b), a rating continuously in effect at or above a given level for 20 or more years generally cannot be reduced below that level absent fraud. Protections like these apply to each individual evaluation, not to the combined rating.

Reductions proposed for conditions that are progressive by nature, or supported by an examination that does not document sustained improvement, are frequently vulnerable on these grounds.

Severance and reduction compared:

To learn more about why and when VA may propose a rating reduction, watch CCK Law Partner Emma Peterson:

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What Does VA Mean by “Functional Loss”?

Functional loss is a veteran’s reduced ability to use a body part as intended, whether from pain, weakness, fatigue, incoordination, instability, or other factors that a range of motion measurement does not capture. The concept applies across the rating schedule under 38 CFR § 4.10, which frames every evaluation around the ability to function under the ordinary conditions of daily life, including employment.

It carries the most weight for musculoskeletal and orthopedic conditions, because 38 CFR §§ 4.40, 4.45, and 4.59 impose specific requirements there: functional loss due to pain, less or more movement than normal, weakened movement, excess fatigability, incoordination, pain on movement, and painful motion in a joint.

In DeLuca v. Brown, 8 Vet. App. 202 (1995), the CAVC held that where a diagnostic code rates on limitation of motion, VA must still consider §§ 4.40 and 4.45 rather than treating the motion measurement as the whole answer. Two later cases sharpened that duty. Under Sharp v. Shulkin, 29 Vet. App. 26 (2017), an examiner cannot decline to estimate additional functional loss during a flare-up merely because the examination did not occur during one. Under Correia v. McDonald, 28 Vet. App. 158 (2016), § 4.59 requires joint testing on active and passive motion and in weight-bearing and nonweight-bearing conditions.

“For example, you might still have decent range of motion, but your knee limits your ability to walk or stand, or your back makes it hard to bend over,” says Ethan Muckelbauer. “These are impairments to your ability to use your body part in daily life, and VA has to consider that evidence when they’re rating your condition, and not just purely rely on those range of motion numbers.”

Practically, this means the examination report matters as much as the examination. Veterans should describe flare-ups concretely — how often, how long, and what motion or activity is lost during one — because that is the information an examiner needs in order to give the estimate the case law requires. Where VA rated a condition without addressing functional loss, that omission can support a request for a higher rating.

Where Can Veterans Get Help Understanding a VA Decision?

These terms appear routinely in rating decisions, BVA decisions, and VA correspondence. Reading a decision with the definitions in hand makes it possible to identify what VA actually decided, what standard it applied, and whether it addressed the evidence in the file. CCK Law also maintains a glossary of veterans law terms covering additional terminology.

Veterans who want help interpreting a decision or evaluating options can work with a VA-accredited representative, including accredited attorneys, accredited claims agents, and veterans service organizations.

Get Help With Your VA Claim or Appeal

Watch CCK Law Partner and former Veterans Law Judge Bradley Hennings explain the lesser-known benefits of working with a veterans law attorney:

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