★ Respiratory
COPD VA Rating
38 CFR § 4.97, Diagnostic Code 6604
Overview
COPD ratings rely heavily on pulmonary function tests — post-bronchodilator values are typically the relevant figures.
Frequent exacerbations and outpatient oxygen requirement push ratings to 60% and 100%.
Burn pit and Agent Orange exposure can support service connection for many veterans.
In Depth
Chronic obstructive pulmonary disease is evaluated under DC 6604 in 38 CFR § 4.97. The criteria are expressed in pulmonary function test values: FEV-1 as a percentage of predicted, the FEV-1/FVC ratio, and DLCO (SB) as a percentage of predicted, with the highest tier also reachable through maximum exercise capacity, cor pulmonale, right ventricular hypertrophy, pulmonary hypertension, episodes of acute respiratory failure, or the requirement for outpatient oxygen therapy.
38 CFR § 4.96(d) sets special provisions for applying the pulmonary function test criteria: post-bronchodilator results are used for rating purposes unless they are poorer than pre-bronchodilator results, and where the results of different tests would produce different evaluations, the test result that the examiner states most accurately reflects the level of disability is used.
Section 4.96(a) further provides that ratings under specified respiratory diagnostic codes, including DC 6604, will not be combined with each other — the predominant disability is evaluated, with elevation to the next higher evaluation where the severity of the overall disability warrants it.
How to Establish Service Connection
- Direct: documented in-service respiratory complaints or chronic exposure.
- Presumptive (PACT Act): veterans with qualifying burn pit / airborne hazard exposure.
Rating Criteria
Paraphrased from 38 CFR § 4.97, Diagnostic Code 6604
| Rating | Criteria |
|---|---|
| 10% | FEV-1 of 71–80% predicted; or FEV-1/FVC of 71–80%; or DLCO of 66–80% predicted. |
| 30% | FEV-1 of 56–70% predicted; or FEV-1/FVC of 56–70%; or DLCO of 56–65% predicted. |
| 60% | FEV-1 of 40–55%; or FEV-1/FVC of 40–55%; or DLCO of 40–55%; or maximum exercise capacity of 15–20 ml/kg/min oxygen consumption. |
| 100% | FEV-1 less than 40%; or FEV-1/FVC less than 40%; or DLCO less than 40%; or maximum exercise capacity less than 15 ml/kg/min; or cor pulmonale; or right ventricular hypertrophy; or requires outpatient oxygen therapy. |
See what each percentage pays in 2026 and how it combines with your current rating →
Evidence Checklist
- Post-bronchodilator PFT values.
- HRCT imaging.
- Pulmonology specialist notes.
- Documentation of any oxygen prescription.
Evidence Templates
Common formats of evidence the VA looks for in this type of claim. These describe what the documents typically include — they are not legal forms or medical opinions, and Oakridge Claims does not draft them.
Complete pulmonary function test report
Spirometry with FEV-1, FVC, FEV-1/FVC ratio, and DLCO (SB), reported pre- and post-bronchodilator.
Oxygen therapy prescription
Documentation of prescribed outpatient oxygen, one of the criteria listed in the highest DC 6604 tier.
Exposure documentation
Deployment records, Airborne Hazards and Open Burn Pit Registry participation, or unit location records relevant to presumptive exposure provisions.
Evidence VA Commonly Cites in These Claims
Descriptive summary of evidence types frequently referenced in rating decisions for this condition. Not a checklist of actions to take — every claim is decided on its own facts.
- ★A complete pulmonary function test report including FEV-1, FEV-1/FVC, and DLCO (SB), with both pre- and post-bronchodilator values, contains all of the variables the code uses.
- ★Where oxygen therapy is prescribed, documentation of that prescription relates directly to a criterion in the highest tier.
- ★Where multiple respiratory diagnoses exist, § 4.96(a) means the predominant disability analysis governs; records identifying which condition predominates address that provision.
- ★For exposure-based theories, the PACT Act presumptions codified at 38 U.S.C. § 1119 and § 1120 and the burn pit registry records are relevant to the service-connection element.
Common pitfalls VA sees
- Submitting a partial PFT that omits DLCO when the code lists it as one of the rating variables.
- Expecting separate evaluations for COPD, emphysema, and chronic bronchitis, which § 4.96(a) addresses.
- Not accounting for the post-bronchodilator rule in § 4.96(d) when comparing test results.
Common Secondary Conditions
Conditions frequently service-connected as secondary to COPD:
Frequently Asked Questions
Have a COPD claim or denial?
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Educational content only — not legal advice and not medical advice. Rating criteria on this page are summarized in plain English from 38 CFR Part 4; consult VA.gov or the current Code of Federal Regulations for official criteria. This page provides general education about how the VA rates this condition; it is not individualized advice, does not establish a representation relationship, and should not be used to self-diagnose, self-treat, or decide a course of action without speaking to a qualified clinician and a VA-accredited representative. Outcomes depend on each veteran's individual facts, evidence, and the adjudicator's judgment; no specific rating, effective date, or other result is guaranteed. Oakridge Claims is a private business and is not affiliated with, endorsed by, or operated by the US Department of Veterans Affairs.