COPD is one of the least argumentative ratings in the schedule: numbers in, percentage out. That cuts both ways. A skipped DLCO test can quietly cost two rating levels, and one line in the 100 percent criteria surprises almost everyone: a prescription for outpatient oxygen is a 100 percent rating by itself, whatever the spirometry says.
How VA rates COPD
COPD is one of the least contested ratings in the schedule: numbers in, percentage out. That cuts both ways. A skipped DLCO test can quietly cost you two rating levels, and one line in the 100 percent criteria surprises almost everyone: a prescription for outpatient oxygen is a 100 percent rating by itself, whatever the spirometry says.
How VA rates COPD
Chronic obstructive pulmonary disease is rated under diagnostic code 6604 in the respiratory schedule (38 CFR 4.97). Unlike mental health or joint ratings, there is very little judgment involved. The levels are set by pulmonary function test (PFT) numbers, chiefly FEV-1 (how much air you can force out in one second), the FEV-1/FVC ratio, and DLCO (how well oxygen moves from your lungs into your blood), each expressed as a percentage of the predicted value for a healthy person of your profile.
The percentage levels
- 10 percent: FEV-1 of 71 to 80 percent predicted, or FEV-1/FVC of 71 to 80 percent, or DLCO of 66 to 80 percent predicted.
- 30 percent: FEV-1 of 56 to 70 percent predicted, or FEV-1/FVC of 56 to 70 percent, or DLCO of 56 to 65 percent predicted.
- 60 percent: FEV-1 of 40 to 55 percent predicted, or FEV-1/FVC of 40 to 55 percent, or DLCO of 40 to 55 percent predicted, or maximum oxygen consumption of 15 to 20 ml/kg/min.
- 100 percent: FEV-1 less than 40 percent predicted, or FEV-1/FVC less than 40 percent, or DLCO less than 40 percent predicted, or maximum exercise capacity under 15 ml/kg/min, or cor pulmonale (right heart failure), right ventricular hypertrophy, pulmonary hypertension, an episode of acute respiratory failure, or a requirement for outpatient oxygen therapy.
Each level is written with "or," so the single worst qualifying measure sets the rating.
Post-bronchodilator numbers control
The special provisions for respiratory ratings (38 CFR 4.96) require PFTs to be evaluated using post-bronchodilator results, the numbers taken after you are given an inhaled medication, because they reflect your best achievable function. If the post-bronchodilator results are actually worse than the pre-bronchodilator ones, VA uses the pre-bronchodilator values instead. When the FEV-1 and DLCO point to different levels, VA uses the measure the examiner identifies as most accurately reflecting your disability.
Home oxygen is an automatic 100
The requirement for outpatient oxygen therapy sits in the 100 percent criteria on its own line. A veteran with a requirement for outpatient oxygen therapy for COPD qualifies for 100 percent regardless of what the spirometry numbers say. This includes prescribed home oxygen, portable oxygen concentrators, and other oxygen delivery systems prescribed for use outside a hospital setting. Make sure the prescription and the medical basis for it are in the claims file.
One rating per respiratory system
Respiratory conditions frequently overlap, and 38 CFR 4.96 does not allow ratings under most coexisting respiratory codes, including COPD, asthma, and sleep apnea codes, to be combined with each other. Instead, VA assigns a single rating under the predominant disability, elevating to the next higher level if the overall severity warrants it. If you have both asthma and COPD, the exam should establish which condition dominates, because that choice picks the criteria.
Common rating details veterans overlook
- Ask for the DLCO. Routine spirometry sometimes skips it, and for many veterans DLCO is the measure that supports the higher level.
- Bring your worst, documented days forward. Episodes of acute respiratory failure belong in the record; a single episode appears in the 100 percent criteria.
- Cor pulmonale, right ventricular hypertrophy, and pulmonary hypertension each independently support 100 percent; cardiology records matter in severe COPD claims.
- Smoking history does not bar service connection. The question is whether service, including airborne hazards and burn pit exposure, caused or aggravated the disease.