Evidence Checklist: Chronic Obstructive Pulmonary Disease (COPD)

Pulmonary function tests (PFTs) with post-bronchodilator FEV-1Critical

Spirometry confirming airflow obstruction with FEV-1/FVC < 0.70 post-bronchodilator. VA rating is based on FEV-1 percent predicted — the single most important number in a COPD claim.

DLCO (diffusing capacity) testingCritical

Diffusion capacity for carbon monoxide documenting gas exchange impairment. DLCO values can drive the rating when more impaired than FEV-1, as the VA uses the most favorable measurement.

Nexus opinion linking COPD to service ("at least as likely as not")Critical

A medical opinion connecting your COPD to in-service exposures such as burn pits, sand and particulate matter, chemical agents, or other respiratory hazards encountered during military service.

Chest imaging (X-ray or CT scan)

Chest X-ray or CT scan documenting hyperinflation, emphysematous changes, air trapping, or bullae consistent with COPD.

Treatment records (inhalers, supplemental oxygen, pulmonary rehab)

Records documenting bronchodilators, inhaled corticosteroids, exacerbation hospitalizations, oxygen therapy, and pulmonary rehabilitation, which reflect disease severity.

Buddy statement from spouse, family, or fellow service member

A written statement from someone who can describe observable symptoms and how your condition affects daily life.

Completed DBQ Respiratory ConditionsCritical

Standardized form capturing FEV-1, DLCO, treatment requirements, and functional impact of COPD.

Documentation of in-service inhalational exposures (burn pits, chemicals)

Service records, deployment history, and PACT Act toxic exposure registry enrollment documenting respiratory hazard exposures during service.

Service treatment records (STRs)Critical

Military medical records showing in-service treatment, complaints, or injuries related to this condition.