Most veterans read the asthma criteria as a list of requirements that must all be satisfied. They’re written as alternatives, and that single formatting detail changes what the record needs to prove. The other point that surprises people is how little of the code relates to the subjective experience of a flare-up, since what gets measured is lung function and the treatment the condition requires.
Asthma diagnosed after service is presumed connected to burn pit exposure under the PACT Act, which removes the need to prove service connection for veterans who served in a qualifying location and timeframe.
The VA assigns an asthma VA rating under diagnostic code 6602, which provides evaluations of 10, 30, 60, and 100 percent.
The criteria at each level measure two things, pulmonary function test values and the treatment or care the condition requires, and the criteria within a level are written as alternatives, so meeting one of them is enough to meet that level.
What does each asthma rating level require
Each level lists lung function thresholds and treatment requirements, and at the two highest levels, requirements tied to attacks and care sought during them.
| Rating | Lung function | Medication or treatment | Attacks or care |
|---|---|---|---|
| 100% | FEV-1 less than 40 percent predicted, or FEV-1/FVC less than 40 percent | Requires daily use of systemic (oral or parenteral) high dose corticosteroids or immuno-suppressive medications | More than one attack per week with episodes of respiratory failure |
| 60% | FEV-1 of 40 to 55 percent predicted, or FEV-1/FVC of 40 to 55 percent | Intermittent (at least three per year) courses of systemic (oral or parenteral) corticosteroids | At least monthly visits to a physician for required care of exacerbations |
| 30% | FEV-1 of 56 to 70 percent predicted, or FEV-1/FVC of 56 to 70 percent | Daily inhalational or oral bronchodilator therapy, or inhalational anti-inflammatory medication | Not listed at this level |
| 10% | FEV-1 of 71 to 80 percent predicted, or FEV-1/FVC of 71 to 80 percent | Intermittent inhalational or oral bronchodilator therapy | Not listed at this level |
The numbers come from a breathing test. FEV-1 is how much air you can blow out in one second. FVC is how much you can blow out in total. The two appear together as FEV-1/FVC, which is the share of your total that comes out in that first second.
Notice: If there are no clinical findings of asthma at the time of the examination, a verified history of asthmatic attacks must be in the record. That provision decides claims where the examination lands on a day without symptoms.
Do you have to meet every requirement in a rating level
No. The requirements at each level are joined by “or,” so a record that satisfies any one of them meets that level. The 10% level reads “FEV-1 of 71- to 80-percent predicted, or FEV-1/FVC of 71 to 80%, or intermittent inhalational or oral bronchodilator therapy,” and every level is built the same way.
That structure lets a single treatment fact carry a rating. A file with an FEV-1 of 74 percent predicted falls in the 10% band, but if the treatment record shows a daily inhaled bronchodilator, it reaches 30% on that fact alone.
Where the evidence lands between two levels without matching either cleanly, the higher evaluation is assigned if the disability picture more nearly approximates its criteria, and the lower one otherwise. Reasonable doubt about the degree of disability is resolved in the claimant’s favor. Both are a rater weighing the file, so neither runs mechanically.
How does the VA read pulmonary function test results for asthma
A VA rating for asthma runs on two measurements, FEV-1 as a percent predicted and the FEV-1/FVC ratio, treated as alternatives within each level. The code itself doesn’t specify the testing conditions; those values have to come from.
Which test result governs when the numbers point to different rating levels
The regulation has a rule for disparity between pulmonary function tests, directing the rater to use the result that the examiner states most accurately reflects the level of disability. It sits in the special provisions at §4.96(d), which open by naming the codes they apply to, and 6602 isn’t among them.
What the asthma code gives you instead is the “or” structure. FEV-1 and FEV-1/FVC are alternatives within a level, so a value meeting either threshold meets the lung function part of that level
Do pre-bronchodilator or post-bronchodilator values control
A breathing test is often run twice, once before you take a rescue inhaler and once after, which gives two sets of numbers. The regulation says to use the second set, unless those results came out worse than the first, in which case the earlier numbers control. It also requires a second test for disability evaluation purposes, with two exceptions, when the first set is already normal and when the examiner explains why the second shouldn’t be done.
Both of those rules sit in the provisions that open by naming the codes they apply to, and 6602 isn’t among them
Since the asthma code doesn’t specify testing conditions, a rater is working from the values in the report and whatever the examiner says about them.If your report shows both sets, the exam needs to label clearly which is which, which is worth raising when you prepare for your C&P exam.
How does treatment history affect the rating when lung function looks normal
Treatment is an independent route to every level of the code, so a record with unremarkable pulmonary function values can still reach 30, 60, or 100% on the treatment requirement alone. Route matters as much as the drug. “Systemic” means oral or parenteral in the code’s own terms, so an inhaled steroid falls under the inhalational anti-inflammatory language at 30%, while a course of oral steroids is what the 60 percent level is written around. A prescription sitting in a chart isn’t the same evidence as a documented course of therapy, since the requirements are phrased in terms of therapy and required use, so the record has to show the frequency and category of what’s being taken.
What does the record need to show at each rating level
The record has to show the facts, the criteria name, and the terms the criteria use, because an asthma VA rating is assigned the same way the VA determines any disability rating, by matching your file against a level and not by reading a general impression of severity.
- Pulmonary function results reporting FEV-1 as a percent predicted and the FEV-1/FVC ratio, which is what places the file in a lung function band at any level
- Prescription records showing whether bronchodilator use is intermittent, the 10 percent line, or daily, the 30 percent line, and whether an inhalational anti-inflammatory is prescribed
- Documentation of systemic corticosteroid courses, with the number occurring in a year for the 60 percent level and whether use is daily and high dose for 100 percent
- Treatment notes showing physician visits for required care of exacerbations, dated so monthly frequency is visible
- Documentation of attack frequency and of any episodes of respiratory failure, which is the 100 percent line
- A verified history of asthmatic attacks, if there are no clinical findings of asthma at the time of the examination
The schedule requires accurate and fully descriptive medical examinations, with emphasis on the limitation of activity the condition imposes, which is what your C&P exam is meant to document. Where a diagnosis isn’t supported by the examination findings, or the report lacks sufficient detail, the rating board is directed to return the report as inadequate for evaluation purposes.
How is asthma rated when another respiratory condition is service connected
If you are service-connected for asthma and a second lung condition, you will not receive a separate disability percentage for each, which changes how your ratings combine. The diagnostic codes covering the respiratory system (6600-6817 and 6822-6847) cannot be combined with themselves, and asthma falls within this block. Therefore, an asthma rating and a sleep apnea rating do not stack, nor do ratings for chronic bronchitis, emphysema, or COPD. A sinusitis VA rating sits under a different set of codes, so the rule reaches it differently.
Instead, a single rating is assigned under the code reflecting the predominant disability. This rating may be elevated to the next higher evaluation if the overall severity of the disability warrants it. The rater determines which condition is predominant based on the file. The schedule also specifically directs that evaluating the same disability under various diagnoses should be avoided.
Why does an asthma VA rating often come in lower than the symptoms suggest
An asthma VA rating is built from the specific facts, the diagnostic code names, which are lung function values, treatment categories, and documented patterns of attacks and care. Symptom severity has no independent path into the percentage.
The schedule states that percentage ratings represent, as far as can practicably be determined, the average impairment in earning capacity resulting from the disease and its residual conditions in civil occupations. That framing explains the design. The percentages are calibrated to a population average, so a file is graded against the listed criteria and not against how the condition feels to the person living with it.
Go Deeper:
FAQs about asthma VA ratings
Can asthma receive a noncompensable rating?
Yes. Code 6602 doesn’t list a zero percent level, and where the schedule doesn’t provide a zero percent evaluation for a diagnostic code, a zero percent evaluation is assigned when the requirements for a compensable evaluation aren’t met. A service-connected asthma diagnosis that meets none of the 10 percent criteria falls under that provision.
Are there rating levels between the ones listed for asthma?
No. The code provides 10, 30, 60, and 100 percent, with nothing in between. Where the evidence raises a question as to which of two evaluations applies, the higher one is assigned if the disability picture more nearly approximates its criteria, and the lower one otherwise.
How does the VA rate reactive airway disease or exercise-induced asthma?
Neither term appears in the rating schedule. A diagnosis that isn’t listed can be rated under one that is, as long as the two are closely analogous in the functions affected, the part of the body involved, and the symptoms. That doesn’t extend to conjectural analogies, or to diagnoses that are doubtful or not fully supported by clinical and laboratory findings.
Does seasonal or as-needed inhaler use count as daily therapy?
The code separates intermittent inhalational or oral bronchodilator therapy at 10 percent from daily inhalational or oral bronchodilator therapy at 30 percent. Neither term is defined anywhere in the respiratory schedule, so the line between them is drawn by the rater reading your treatment records. What determines the outcome is how the records describe the pattern of use over time.
Can a bronchial asthma VA rating be reduced at a future exam?
The regulation names bronchial asthma as a condition that improves temporarily, and ratings for those conditions can’t be cut on the strength of one examination unless the whole record clearly shows the improvement has held. The rules governing a VA disability reduction also mean that a shorter or less thorough exam than the one your rating was based on can’t be used to reduce it.
Do home oxygen or nebulizer use appear in the asthma criteria?
No. Diagnostic code 6602 doesn’t list outpatient oxygen therapy or nebulizer use at any level, and its criteria run on pulmonary function values, bronchodilator and anti-inflammatory therapy, systemic corticosteroids, attack frequency, and physician visits for exacerbations. Records of oxygen or nebulizer use can still document the frequency and severity of exacerbations and the care required during them, which are facts the criteria do name.