RespiratoryDC 6604

COPD (Chronic Obstructive Pulmonary Disease)

COPD (including emphysema and chronic bronchitis) is rated under 38 CFR § 4.97, Diagnostic Code 6604. FEV-1 and FVC values from pulmonary function tests drive the rating level.

VA Rating Levels

10%

FEV-1 of 71–80% predicted, or FVC of 71–80% predicted. Mild airflow obstruction.

30%

FEV-1 of 56–70% predicted, or FVC of 56–70%. Moderate obstruction, noticeable on exertion.

60%

FEV-1 of 40–55% predicted, or FVC of 40–55%; shortness of breath with minimal exertion.

100%

FEV-1 less than 40% predicted, or FVC less than 40%; daily functioning severely limited, may require supplemental oxygen.

Exam Tips & Key Evidence

→Smoking history complicates service connection — document occupational exposures (burn pits, fumes, dust) as the primary or aggravating cause
→PACT Act expands presumptive eligibility for respiratory conditions from burn pit exposure
→If you use supplemental oxygen, document it in your claim
→COPD plus sleep apnea is an 'overlap syndrome' with worse outcomes — claim both

Commonly Related Conditions

Sleep Apnea Asthma Hypertension (High Blood Pressure)

38 CFR Reference

38 CFR § 4.97, Diagnostic Code 6604