COPD & Asthma VA Disability Rating: How to Claim Respiratory Conditions (2026)

COPD vs. Asthma: Which Diagnostic Code Applies?

The VA rates chronic obstructive pulmonary disease (COPD) and asthma under separate diagnostic codes, though the rating criteria share the same spirometry-based approach. Choosing the correct DC matters because the threshold criteria differ slightly and can affect your rating percentage.

• COPD (Chronic Obstructive Pulmonary Disease, ICD-10 J44): Rated under DC 6604 — includes emphysema and chronic bronchitis. Airflow obstruction is fixed or minimally reversible. FEV-1/FVC ratio is typically < 0.70.
• Asthma (ICD-10 J45): Rated under DC 6602 — variable, episodic airway obstruction that is reversible with bronchodilators. The VA rating also incorporates frequency of attacks and steroid use.
• Asthma-COPD Overlap (ACO): Veterans with features of both can be rated under the more favorable code. The VA should rate the condition producing the highest rating.

How VA Rates COPD: DC 6604 and Spirometry Thresholds

COPD is rated under 38 CFR § 4.97, Diagnostic Code 6604. The rating is based primarily on FEV-1 (Forced Expiratory Volume in 1 second) and FVC (Forced Vital Capacity) from spirometry testing, expressed as percentages of predicted normal values. The VA uses the post-bronchodilator spirometry values for rating purposes.

The VA rates based on whichever measurement — FEV-1, FEV-1/FVC ratio, or DLCO — produces the highest rating. If your FEV-1 is 58% (which falls in the 56–70% range for 30%) but your DLCO is 43% (which falls in the 40–55% range for 60%), you should be rated at 60%. Ensure your pulmonary function test (PFT) report includes all three values.

How VA Rates Asthma: DC 6602 and Steroid Use

Asthma is rated under 38 CFR § 4.97, Diagnostic Code 6602. The rating incorporates both spirometry findings AND clinical criteria — including frequency of attacks, emergency visits, and daily corticosteroid use. The DC 6602 criteria offer multiple pathways to higher ratings for veterans with well-controlled asthma on aggressive medications.

Key insight for asthma claimants: Veterans who use daily inhaled corticosteroids (like Advair, Symbicort, or Flovent) combined with short courses of oral steroids 6+ times per year qualify for the 60% rating even if their FEV-1 is normal when tested. The medication criteria reflect the severity of the underlying condition. Document all steroid use — including burst and taper courses — in your personal statement and treatment records.

Burn Pit and PACT Act Presumptive for Respiratory Conditions

The PACT Act of 2022 significantly expanded VA presumptive coverage for respiratory conditions in veterans who were exposed to burn pits and other airborne hazards. Under the PACT Act framework:

Understanding Your Spirometry Results for VA Purposes

The pulmonary function test (PFT) report is the single most important medical record for a COPD or asthma VA disability claim. Understanding how to read these results helps ensure you're getting the correct rating:

• FEV-1: The amount of air you can forcefully exhale in one second. Expressed as a percentage of the predicted normal for your age, height, sex, and race. Values below 80% are considered abnormal.
• FVC: Total amount of air forcefully exhaled from maximum inhalation to maximum exhalation. Reduced FVC can indicate restriction (like fibrosis) as well as obstruction.
• FEV-1/FVC ratio: The ratio of these two values. A ratio below 0.70 (70%) indicates airflow obstruction consistent with COPD or asthma.
• DLCO: Diffusing capacity — measures how well oxygen crosses from the air sacs into the bloodstream. Low DLCO indicates emphysematous damage to lung parenchyma.
• Post-bronchodilator values: VA rates COPD based on post-bronchodilator results (after inhaling albuterol). Make sure your PFT includes both pre- and post-bronchodilator measurements.

Documentation tip: If your PFT was performed when you were having a "good day," consider requesting a repeat test during a symptomatic period, or ask your pulmonologist to perform a methacholine challenge test (for asthma) or exercise spirometry to document your typical functional capacity.

Secondary Conditions: Sleep Apnea, Hypertension, Pulmonary Hypertension

COPD and asthma can cause secondary conditions that are each separately ratable under 38 CFR § 3.310:

Obstructive Sleep Apnea Secondary to COPD

The overlap syndrome of COPD and obstructive sleep apnea (OSA-COPD overlap) is well-established. Veterans with service-connected COPD who develop OSA may claim it as secondary — particularly if the COPD causes nocturnal hypoxemia that drives apnea events. Sleep apnea is rated at 30% for CPAP use, adding $537.42/month to your benefits.

Pulmonary Hypertension Secondary to COPD

Chronic hypoxemia from COPD causes pulmonary vasoconstriction and eventually pulmonary arterial hypertension (PAH). When PAH develops as a direct complication of service-connected COPD, it can be claimed as a secondary condition rated under DC 7016 at 30–100% depending on severity and right heart function.

Cor Pulmonale (Right Heart Failure)

Advanced COPD causing pulmonary hypertension can lead to cor pulmonale — right-sided heart failure. This is a severe complication rated under the cardiovascular rating schedule.

Evidence Checklist for COPD/Asthma VA Claim

• Pulmonary function test (PFT) report — must include FEV-1, FVC, FEV-1/FVC ratio, DLCO, and post-bronchodilator values
• Current pulmonology or primary care treatment notes documenting diagnosis, symptom severity, and medication regimen
• Medication list — all inhalers (bronchodilators, corticosteroids), oral steroid courses, and oxygen use
• Hospital records if any COPD/asthma exacerbation hospitalizations have occurred
• DD-214 showing qualifying burn pit service or other hazardous exposure documentation
• In-service exposure documentation — unit history, deployment records, records of smoke or chemical exposure for non-PACT claims
• VA Form 21-526EZ for the primary COPD/asthma claim
• Personal statement describing functional limitations — exercise tolerance, need for oxygen, frequency of exacerbations

How to File Your Respiratory Condition Claim

1. Get current PFTs from a pulmonologist or your primary care physician. Ensure post-bronchodilator values and DLCO are included.
2. File an Intent to File (VA Form 21-0966) today to protect your effective date.
3. Claim COPD/asthma AND secondary conditions simultaneously — don't file the primary condition and wait to add sleep apnea or pulmonary hypertension.
4. For burn pit veterans: Document your service locations and dates clearly on your claim to establish PACT Act presumptive eligibility.
5. Use the rating estimator to calculate your combined rating including COPD and secondary conditions.
6. Get free claim help from a VSO if you're unsure which diagnostic code applies or whether PACT Act covers your service.

Check the 2026 VA disability pay rates for the exact monthly dollar value at each rating level.