Is asthma a PACT Act presumptive condition?

Yes. Asthma is recognized as a PACT Act presumptive condition for veterans with qualifying toxic exposure service — specifically those who served in Southwest Asia, Afghanistan, and other covered areas where burn pits and airborne hazards were prevalent.

What VA rating does asthma receive?

Asthma is rated under Diagnostic Code 6602 (Bronchial Asthma) based on FEV1, FEV1/FVC ratio, and the frequency and severity of asthma attacks. Ratings range from 10% to 100%.

Do I need pulmonary function tests for an asthma claim?

Yes. Spirometry — measuring FEV1 and FEV1/FVC before and after bronchodilator — is essential for rating asthma. Bronchoprovocation testing (methacholine challenge) and peak flow records may also be relevant.

Can I claim asthma if it developed after I left the service?

Yes. Conditions that develop after service but are linked to qualifying service exposures are covered by the PACT Act presumptive framework. A post-service asthma diagnosis in a veteran with qualifying service history qualifies for presumptive service connection.

What is an FEV1 and how does it affect my asthma rating?

FEV1 (forced expiratory volume in one second) is the volume of air you can forcibly exhale in one second on spirometry testing. It is the primary metric used for VA asthma ratings. Higher FEV1 percentages of predicted correspond to lower ratings; lower FEV1 percentages correspond to higher ratings.

Asthma PACT Act Presumptive | VA Disability Guide 2026

How veterans claim asthma under PACT Act presumptive service connection from burn pit and airborne hazard exposure. Covers eligibility, rating criteria, evidence requirements, and filing guidance.

What Is Asthma as a PACT Act Presumptive?

Asthma is a chronic inflammatory disease of the airways characterized by variable airflow obstruction, bronchial hyperresponsiveness, and recurring episodes of wheezing, shortness of breath, chest tightness, and cough. For veterans who served in burn pit environments and other toxic exposure theaters, asthma is a recognized PACT Act presumptive condition — one of the most prevalent respiratory diseases in post-9/11 veterans.

The military respiratory health data is striking: studies of veterans who served in Southwest Asia show substantially higher rates of new-onset asthma compared to veterans who did not deploy to these environments. The PACT Act's recognition of asthma as a presumptive reflects this epidemiological reality and removes the burden of proving individual causation from veterans who served in qualifying locations.

Asthma severity — and therefore VA rating level — varies widely. Intermittent asthma with normal lung function between attacks is rated differently from severe persistent asthma with significantly reduced baseline FEV1. Thorough pulmonary function testing is essential to ensure the rating accurately reflects the true burden of the disease.

Why the VA Recognizes This Connection

Burn pit particulate exposure and airway sensitization. Fine particulate matter from open burn pits penetrates deep into the airways, causing epithelial injury, allergic sensitization, and airway hyperresponsiveness. These changes are the biological foundation of asthma — and research has documented their occurrence in veterans with significant burn pit exposure histories.

Chemical sensitizers in military environments. Volatile organic compounds, sulfur dioxide, and isocyanates present in military environments are known occupational asthma sensitizers — chemicals that cause immunological changes that produce asthma in previously non-asthmatic individuals.

Constrictive bronchiolitis and concurrent conditions. Some veterans with burn pit exposure develop constrictive bronchiolitis — a distinct condition that mimics asthma on clinical evaluation. The VA's PACT Act framework covers both conditions, and proper pulmonary function testing (including bronchoprovocation and surgical biopsy) may be needed to distinguish them.

Deployed environment allergens. Deployment environments in Southwest Asia and Afghanistan exposed veterans to novel aeroallergens — desert dusts, mold spores, and arthropod materials — that can trigger allergic sensitization and subsequent asthma development.

The VA's PACT Act information page provides details on qualifying service.

Evidence That Wins This Claim

For the presumptive pathway:

Proof of qualifying service: DD-214 documenting service in covered locations.
Asthma diagnosis: Physician's diagnosis based on clinical criteria, supported by pulmonary function test findings.
Spirometry results: Pre- and post-bronchodilator FEV1 and FVC measurements. Documentation of reversible airflow obstruction (12%+ improvement after bronchodilator) strongly supports the asthma diagnosis.

Supporting documentation:

Bronchoprovocation test results: Positive methacholine challenge confirms bronchial hyperresponsiveness.
Peak flow diary: Serial peak expiratory flow measurements documenting variability characteristic of asthma.
Pulmonologist evaluation records: Specialist documentation of asthma diagnosis, severity classification, and treatment regimen.
Medication records: Controller medications (inhaled corticosteroids, LABAs) and rescue inhaler prescriptions document the clinical burden.
Personal exposure statement: Documentation of burn pit proximity and airborne hazard exposure during deployment.

How the VA Rates Asthma

Asthma is rated under Diagnostic Code 6602:

Rating	Criteria
100%	FEV1 less than 40% of predicted, or FVC less than 40%, or more than once-weekly attacks requiring systemic corticosteroids
60%	FEV1 40%–55% of predicted, or FEV1/FVC 40%–55%, or daily use of systemic corticosteroids or immunosuppressives
30%	FEV1 56%–70% predicted, or FEV1/FVC 56%–70%, or at least monthly visits to physician for episodes
10%	FEV1 71%–80% predicted, or FEV1/FVC 71%–80%, or inhalational or oral bronchodilator therapy required

The 10% rating — the most common — applies to veterans with mild persistent asthma requiring daily controller medications. The rating increases substantially with lung function impairment.

Why These Claims Get Denied — And How to Prevent It

No formal asthma diagnosis. Self-reported shortness of breath without pulmonary function testing and a physician's diagnosis is insufficient. Formal spirometry confirming reversible airflow obstruction is required.

FEV1 normal between attacks. Intermittent asthma may show near-normal FEV1 between episodes. A methacholine challenge test that demonstrates bronchial hyperresponsiveness can document asthma even when baseline spirometry is normal.

Qualifying service not verified. The presumptive requires documented service in covered locations. Ensure DD-214 reflects the relevant deployment.

Medication requirement not documented. The 10% rating is supported by the requirement for bronchodilator therapy. Ensure prescription records for controller or rescue inhalers are included.

PACT Act presumptive theory not raised. Some veterans file under direct service connection (requiring a nexus letter) when they could use the presumptive pathway (requiring only qualifying service and a diagnosis). Using the correct pathway simplifies the claim significantly.

Related Conditions

Next Steps

For a complete guide to PACT Act respiratory claims, see the PACT Act Claims Playbook.

This is educational content, not legal advice. SecondaryClaims.com is not accredited by the VA under 38 CFR § 14.629. For accredited representation, consult a VA-accredited VSO, claims agent, or attorney at https://www.va.gov/ogc/apps/accreditation/.