More veterans are receiving disability compensation today than at any point in American history. That didn’t happen by accident. It happened because the system built to assess and pay those veterans went through a century of arguments, reforms, court battles, and legislative overhauls before arriving where it stands now. If you’re a veteran trying to make sense of your rating, understanding how this system was designed and repeatedly rebuilt gives you a real edge in navigating it.
Where It All Started: The Bureau of War Risk Insurance
The modern VA rating system traces its roots to 1917, when Congress created the Bureau of War Risk Insurance to compensate soldiers returning from World War I. This was a radical idea at the time. The federal government had no standardized method for measuring how much a combat wound or illness diminished a person’s ability to work. Compensation was inconsistent, often arbitrary, and dependent on which regional office a veteran happened to reach first.
Congress passed the Sweet Act of 1921, which consolidated veterans’ benefits under a single agency, the Veterans Bureau. For the first time, a formal rating schedule tied specific conditions to specific percentage points. A missing hand, for example, carried a defined rating. A partial hearing loss carried another. The logic was economic: the percentage was meant to represent the reduction in a veteran’s average earning capacity.
That earning-capacity framework stuck around for a long time, even as it became clear that two veterans with identical ratings could have wildly different lived experiences. One might hold a desk job comfortably. Another might find that the same rating leaves him unable to do any meaningful work at all. The system was never perfectly fair, and veterans knew it.
The Veterans Affairs Schedule for Rating Disabilities: A Living Document
The Veterans Affairs Schedule for Rating Disabilities, known as the VASRD, is the official rulebook that assigns percentages to conditions. According to the VA Benefits Administration, the agency completed more than 2.5 million disability compensation and pension claims in fiscal year 2024 alone, an all-time record. Every single one of those claims ran through the VASRD.
The VASRD has been revised multiple times. The most consequential revisions came after each major conflict, as new types of injuries demanded new diagnostic codes. Vietnam-era veterans pushed for recognition of PTSD. Gulf War veterans fought for recognition of unexplained multi-symptom illnesses. Post-9/11 veterans added traumatic brain injury to the mix. Each time, the rating schedule had to catch up to the reality of what war actually does to a person’s body and mind.
Congress mandated in 1998 that the VASRD be reviewed on a regular cycle. That mandate was largely ignored for years. Real momentum came with the Veterans Benefits Improvement Act and subsequent legislation forcing the VA to systematically update each diagnostic chapter. The mental health chapter, one of the most contested, received a comprehensive revision. Even the musculoskeletal section, covering joints, spine, and muscles, went through a major overhaul that shifted how range-of-motion limitations are evaluated.
VA Math: The Combined Ratings System and Why Veterans Find It Baffling
One of the most confusing features of the modern VA system is what veterans call “VA math.” When a veteran has more than one service-connected condition, the VA doesn’t simply add the percentages together. Instead, it applies a combined ratings formula that treats the veteran as progressively more disabled with each additional condition applied to the remaining “whole person.”
Here’s a concrete scenario: imagine Corporal Wallace comes home with a 50% rating for a back condition and a 30% rating for a knee condition. Simple addition gives you 80%. But VA math starts with the 50% rating, leaving 50% remaining. The 30% rating is applied to that remaining 50%, adding only 15 percentage points. The combined rating is 65%, which the VA rounds to the nearest 10, producing a final rating of 70%. Corporal Wallace is rated 10 full points lower than naive arithmetic would suggest.
Veterans who don’t understand this system often leave real money on the table. That’s not cynicism; it’s arithmetic. A 2024 U.S. Census Bureau report found that in 2022, approximately 5.4 million of the 16.2 million American veterans received service-connected compensation benefits, yet many veterans with multiple conditions remain rated well below the level their full roster of conditions would warrant under proper combined calculation.
The PACT Act: The Biggest Expansion in Decades
The Sergeant First Class Heath Robinson Honoring our Promise to Address Comprehensive Toxics Act, better known as the PACT Act, became law in August 2022. It’s the single largest expansion of veterans’ benefits in a generation. The law added burn pit exposure, certain rare cancers, and dozens of other conditions to the list of presumptive service connections, meaning veterans no longer have to prove the individual link between their military service and their diagnosis.
The downstream effect on the rating system was enormous. The VA reported in October 2024 that it received more than 4.4 million claims for disability compensation over the two fiscal years following the PACT Act’s passage, a 29.8% increase over the prior two-year period. That volume strained VA processing capacity, and the average wait time for a decision stretched accordingly.
The PACT Act also changed the nature of rating reviews. Veterans who had previously been denied benefits for conditions now covered under PACT could file for supplemental claims without the old evidence barriers. That process opened a pathway for higher ratings for veterans who had been carrying conditions for years without recognition.
What the History Tells Veterans Today
The rating system isn’t a static fact. It’s a policy document that has been rewritten in response to pressure, litigation, and legislation for over a century. Here’s what that means practically for veterans right now:
- A prior denial is not necessarily final. The grounds for denial can become legally obsolete when the VASRD or presumptive lists change.
- Conditions worsen over time. A rating assigned five years ago may no longer reflect your current level of impairment. A new medical opinion showing increased severity is valid grounds for a rating review.
- Secondary conditions count. If a service-connected condition causes or aggravates a second condition, the second one can be added to your rating.
- The combined ratings formula penalizes veterans who don’t claim everything. Every unrated condition that belongs in the record is a missed percentage point.
Veterans navigating any of these situations can benefit from professional guidance. Organizations specializing in Support for VA disability rating increases exist precisely because the process rewards those who know the rules and punishes those who don’t.
A Century of Reform at a Glance
| Year | Development | Impact on Veterans |
|---|---|---|
| 1917 | Bureau of War Risk Insurance established | First federal compensation framework for service injuries |
| 1921 | Veterans Bureau created; formal rating schedule introduced | Standardized percentage-based disability assessments |
| 1944 | VASRD codified into modern form | Diagnostic codes tied to specific conditions and ratings |
| 1988 | PTSD formally incorporated into rating schedule | Vietnam-era and other veterans gained mental health claims access |
| 1998 | Congress mandates regular VASRD reviews | Required periodic updates to reflect current medical knowledge |
| 2022 | PACT Act signed into law | Presumptive service connection for burn pit exposure and toxic cancers |
The rating system has never been finished. Every generation of veterans has had to fight to make it more accurate, more honest, and more reflective of what service actually costs. That fight is ongoing, and knowing the history of the rules is the first step toward using them well.
“The rating schedule is a living document and must evolve with our understanding of how service-connected conditions affect Veterans’ lives.” This framing, widely echoed by veterans’ policy researchers and VA historians, captures why no single rating decision should be accepted as the permanent last word.
