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C&P Exam Prep: Respiratory Conditions (Asthma / COPD / Bronchitis)

DC 6604 respiratory 38 CFR 4.97

DBQ Overview

Interview + Physical
Form Name
Respiratory_Conditions_Other_than_Tuberculosis_and_Sleep_Apnea
Form Code
Respiratory_Conditions_Other_than_Tuberculosis_and_Sleep_Apnea
Page Count
11
Examiner Type
Pulmonologist or Physician
Estimated Duration
20-45 minutes
Exam Format
Interview + Physical

What to Expect During Your Exam

Exam Overview

To document the current severity of your respiratory condition for VA disability rating purposes under 38 CFR 4.97. The examiner will gather clinical data to assign a rating percentage based on objective pulmonary function test results and documented symptoms.

What the examiner evaluates:

  • Pulmonary function test results (FEV-1, FVC, FEV-1/FVC ratio, DLCO)
  • Current medication regimen including inhalational bronchodilators, anti-inflammatory agents, oral/systemic corticosteroids, and immunosuppressives
  • Frequency and severity of exacerbations and attacks
  • History of hospitalizations, ER visits, and acute respiratory failure episodes
  • Presence of cor pulmonale, right ventricular hypertrophy, or pulmonary hypertension
  • Need for supplemental oxygen therapy
  • Current symptoms: dyspnea, wheezing, productive cough, sputum production, hemoptysis
  • Functional impact on work, activities of daily living, and exercise tolerance
  • History and onset of the respiratory condition in relation to military service
  • All prior diagnostic imaging including chest X-ray, CT scan, MRI, and bronchoscopy results

Pulmonary function testing (spirometry) will typically be performed at the exam facility or at a separate pulmonary function lab. Bring your inhaler but do NOT use a short-acting bronchodilator within 4 hours of spirometry unless instructed otherwise, as the test measures pre-bronchodilator values. Notify the examiner if you have already used your inhaler that day.

Typical duration: 20-45 minutes

Spirometry - FEV-1 (Forced Expiratory Volume in 1 second)

The amount of air you can forcefully exhale in one second, expressed as a percentage of the predicted normal value for a person of your age, height, sex, and race. This is the single most important metric for rating COPD and asthma under 38 CFR 4.97.

What to expect:

You will breathe into a mouthpiece connected to a spirometer and blow out as hard and fast as you can. The test is typically repeated 3 times and the best result is used. The effort required is significant and may trigger coughing or shortness of breath.

Key thresholds:

  • FEV-1 < 40% predicted — 100% rating - most severe tier (COPD/Chronic Bronchitis DC 6604/6600)
  • FEV-1 40%-55% predicted — 60% rating
  • FEV-1 56%-70% predicted — 30% rating
  • FEV-1 71%-80% predicted — 10% rating

Tips:

  • Do not use short-acting bronchodilators (albuterol, ipratropium) within 4 hours before the test unless medically necessary.
  • Avoid caffeine, smoking, and heavy exercise on the test day as these can temporarily improve your lung function and underrepresent your true disability.
  • Give maximum effort on every breath; examiner inconsistency or poor effort can result in artificially high scores.
  • If you feel you cannot give full effort due to symptoms on the day of testing, tell the examiner before and after - this should be documented.
  • Request that results reflect your worst-day effort level, consistent with M21-1 guidance on reporting worst-day symptoms.

Pain considerations: If forceful exhalation causes chest tightness, bronchospasm, or coughing attacks, immediately inform the examiner. These reactions themselves are clinically meaningful and should be documented in the DBQ.

Spirometry - FVC (Forced Vital Capacity)

Total volume of air you can exhale after taking the deepest possible breath. Used in conjunction with FEV-1 to calculate the FEV-1/FVC ratio.

What to expect:

Performed simultaneously with FEV-1 during standard spirometry. The FVC measurement requires a sustained, maximal exhalation over several seconds.

Key thresholds:

  • FEV-1/FVC < 40% — 100% rating - most severe tier
  • FEV-1/FVC 40%-55% — 60% rating
  • FEV-1/FVC 56%-70% — 30% rating
  • FEV-1/FVC 71%-80% — 10% rating

Tips:

  • The FEV-1/FVC ratio reflects the degree of airflow obstruction and is calculated automatically from your spirometry.
  • A low ratio (obstructive pattern) is the hallmark of COPD and asthma.
  • A reduced FVC with a normal ratio suggests a restrictive pattern, which may point to a different or additional diagnosis.

Pain considerations: If sustained exhalation causes lightheadedness, chest pain, or significant bronchospasm, document these immediately with the examiner.

DLCO (SB) - Diffusing Capacity of the Lung for Carbon Monoxide, Single Breath

The ability of the lungs to transfer gas (specifically carbon monoxide as a surrogate for oxygen) across the alveolar membrane. Expressed as a percentage of predicted normal. Particularly important for COPD (emphysema component) and interstitial lung disease.

What to expect:

You will inhale a small amount of carbon monoxide mixed with air, hold your breath for about 10 seconds, then exhale. The test is usually done in a seated position. Multiple attempts may be needed.

Key thresholds:

  • DLCO (SB) < 40% predicted — 100% rating (DC 6604/6600)
  • DLCO (SB) 40%-55% predicted — 60% rating
  • DLCO (SB) 56%-70% predicted — 30% rating
  • DLCO (SB) 71%-80% predicted — 10% rating

Tips:

  • Do not smoke for at least 4 hours before DLCO testing as carbon monoxide from smoking will artificially lower the test result.
  • DLCO is an independent pathway to a 100% or 60% rating - even if your FEV-1 is above threshold.
  • Bring all prior DLCO results from your private pulmonologist or VA provider to the exam.

Pain considerations: DLCO testing is generally well tolerated, but if breath-holding at full inspiration causes severe discomfort or bronchospasm, inform the examiner.

Exercise Capacity Testing (VO2 Max / Oxygen Consumption)

Maximum oxygen consumption during exertion, expressed in ml/kg/min. Used to establish 100% or 60% ratings for COPD/Chronic Bronchitis when FEV-1 and DLCO are insufficient or inconsistent.

What to expect:

Typically involves a treadmill or bicycle ergometer test with monitoring of oxygen consumption. Not always performed at C&P exams but results from prior exercise tests should be submitted.

Key thresholds:

  • VO2 max < 15 ml/kg/min (with cardiorespiratory limitation) — 100% rating
  • VO2 max 15-20 ml/kg/min (with cardiorespiratory limitation) — 60% rating

Tips:

  • If you have had exercise stress testing, cardiopulmonary exercise testing (CPET), or 6-minute walk tests, bring all results.
  • Note that the limitation must be cardiac or respiratory in origin - not orthopedic - for this criterion to apply.
  • If you use supplemental oxygen on exertion, this itself supports higher ratings.

Pain considerations: If you cannot exercise to tolerance due to dyspnea or chest tightness, this is critically important clinical information. Document in advance what activities cause shortness of breath.

Estimate

Rating Criteria Breakdown

100% FEV-1 less than 40% of predicted value; OR FEV-1/FVC ratio l ...

FEV-1 less than 40% of predicted value; OR FEV-1/FVC ratio less than 40%; OR DLCO (SB) less than 40% predicted; OR maximum exercise capacity less than 15 ml/kg/min with cardiorespiratory limitation; OR cor pulmonale (right heart failure); OR right ventricular hypertrophy; OR pulmonary hypertension (shown by echocardiogram or cardiac catheterization); OR episode(s) of acute respiratory failure; OR requires outpatient oxygen therapy. For asthma (DC 6602): FEV-1 < 40% predicted; OR FEV-1/FVC < 40%; OR more than one attack per week with episodes of respiratory failure; OR requires daily use of systemic high-dose corticosteroids or immunosuppressive medications.

Key Symptoms

  • Severe dyspnea at rest or with minimal exertion
  • Inability to walk more than a short distance without stopping
  • Daily oxygen use (prescribed supplemental O2)
  • History of acute respiratory failure requiring hospitalization or ICU
  • Diagnosed cor pulmonale or right ventricular hypertrophy
  • Pulmonary hypertension confirmed by echo or cardiac cath
  • Daily systemic corticosteroids or immunosuppressives
  • More than one severe asthma attack per week

CFR: 38 CFR 4.97, DC 6604: 'cor pulmonale (right heart failure), or; right ventricular hypertrophy, or; pulmonary hypertension (shown by Echo or cardiac catheterization), or; episode(s) of acute respiratory failure, or; requires outpatient oxygen therapy.'

60% FEV-1 of 40% to 55% of predicted value; OR FEV-1/FVC of 40% ...

FEV-1 of 40% to 55% of predicted value; OR FEV-1/FVC of 40% to 55%; OR DLCO (SB) of 40% to 55% predicted; OR maximum oxygen consumption of 15 to 20 ml/kg/min with cardiorespiratory limitation. For asthma (DC 6602): FEV-1 of 40%-55% predicted; OR FEV-1/FVC of 40%-55%; OR at least monthly visits to a physician for required care of exacerbations; OR intermittent (at least three per year) courses of systemic (oral or parenteral) corticosteroids.

Key Symptoms

  • Significant dyspnea on exertion limiting daily activities
  • Frequent exacerbations requiring physician visits
  • At least 3 courses of oral/systemic steroids per year (asthma)
  • Monthly physician visits for exacerbation management
  • Substantially reduced exercise tolerance
  • Frequent productive cough and wheezing

CFR: 38 CFR 4.97, DC 6604: 'FEV-1 of 40- to 55-percent predicted, or; FEV-1/FVC of 40 to 55 percent, or; DLCO (SB) of 40- to 55-percent predicted, or; maximum oxygen consumption of 15 to 20 ml/kg/min (with cardiorespiratory limit).'

30% FEV-1 of 56% to 70% of predicted value; OR FEV-1/FVC of 56% ...

FEV-1 of 56% to 70% of predicted value; OR FEV-1/FVC of 56% to 70%; OR DLCO (SB) of 56% to 70% predicted; OR daily inhalational or oral bronchodilator therapy; OR inhalational anti-inflammatory medication.

Key Symptoms

  • Dyspnea with moderate exertion (stairs, walking distances)
  • Daily use of prescribed inhalational bronchodilator (e.g., albuterol, levalbuterol, formoterol, salmeterol)
  • Daily inhalational corticosteroid (e.g., fluticasone, budesonide, beclomethasone)
  • Moderate limitation of activities
  • Productive cough most days
  • Wheezing or chest tightness requiring daily medication

CFR: 38 CFR 4.97, DC 6604: 'FEV-1 of 56- to 70-percent predicted, or; [DLCO (SB) of 56- to 70-percent predicted,] or; daily inhalational or oral bronchodilator therapy, or; inhalational anti-inflammatory medication.'

10% FEV-1 of 71% to 80% of predicted value; OR FEV-1/FVC of 71% ...

FEV-1 of 71% to 80% of predicted value; OR FEV-1/FVC of 71% to 80%; OR DLCO (SB) of 71% to 80% predicted; OR intermittent inhalational or oral bronchodilator therapy. For asthma (DC 6602): Note - in the absence of clinical findings of asthma at time of examination, a verified history of asthmatic attacks must be of record.

Key Symptoms

  • Mild, intermittent dyspnea
  • Occasional use of rescue inhaler (e.g., albuterol PRN)
  • Intermittent wheezing or cough
  • Symptoms provoked by specific triggers (cold air, smoke, allergens, exercise)
  • Generally preserved daily function with episodic symptoms

CFR: 38 CFR 4.97, DC 6602 Note: 'In the absence of clinical findings of asthma at time of examination, a verified history of asthmatic attacks must be of record.' This means asthma veterans who are symptom-free on exam day must have documented attack history in their medical records.

How to Describe Your Symptoms

Dyspnea (Shortness of Breath)

How to describe:

Describe dyspnea using specific functional benchmarks: how many level steps before stopping, how far you can walk on flat ground, whether you become short of breath dressing, bathing, or speaking in full sentences. Use the MRC Dyspnea Scale language if helpful (e.g., 'I stop for breath after walking about 100 yards on level ground'). Distinguish your average day from your worst days.

Worst-day example:

“On my worst days, I get short of breath just walking from my bedroom to the bathroom - about 20 feet. I have to sit down to catch my breath before I can continue. I cannot climb even one flight of stairs without stopping multiple times. I wake up at night feeling like I'm suffocating.”

What the examiner listens for:

Functional activity limitations tied to dyspnea; how dyspnea compares to baseline; whether dyspnea occurs at rest, with minimal exertion, moderate exertion, or only with strenuous activity; nocturnal dyspnea; orthopnea.

Understatements to avoid:

Saying 'I get a little winded sometimes' when you actually stop frequently during daily activities. Avoid phrases like 'I manage okay' if you have significantly modified your life to accommodate breathlessness.

Exacerbation Frequency and Severity

How to describe:

Provide the number of exacerbations (flare-ups) in the past 12 months, what triggered them, how long they lasted, whether they required ER visits or hospitalization, and what treatment was required (steroids, antibiotics, nebulizers, intubation). Distinguish between minor exacerbations managed at home and major ones requiring emergency care.

Worst-day example:

“In the last year I have had 5 exacerbations. Three of them required urgent care visits where I received IV steroids and nebulizer treatments. One required a 4-day hospitalization. During each flare, I cannot speak in full sentences, my lips may turn bluish, and I need to sit upright to breathe. My worst flares last 1-2 weeks.”

What the examiner listens for:

Number of exacerbations per year (3+ per year is a key threshold for the 60% asthma rating criterion); hospitalization history; steroid burst frequency and duration; whether exacerbations result in acute respiratory failure.

Understatements to avoid:

Forgetting to count ER visits, urgent care trips, or telehealth calls where steroids were prescribed. Not mentioning exacerbations that you 'treated yourself' with extra inhalers at home.

Medication Regimen and Its Significance

How to describe:

List ALL respiratory medications including exact names, doses, and how often you use them. Distinguish between controller medications (daily use) and rescue medications (as needed). Make clear whether any are systemic (oral/injectable) corticosteroids versus inhaled. The type and frequency of medications directly determines your rating tier.

Worst-day example:

“I take fluticasone/salmeterol (Advair) twice daily, tiotropium (Spiriva) once daily, and montelukast every night. I also require oral prednisone bursts approximately 4 times per year for about 5-10 days each. On bad days I use albuterol every 2-4 hours. I have been prescribed home nebulizer treatments.”

What the examiner listens for:

Daily inhalational bronchodilator use (30% threshold); daily inhalational anti-inflammatory use (30% threshold); intermittent systemic corticosteroid courses - at least 3 per year triggers 60% asthma criteria; daily systemic corticosteroids or immunosuppressives triggers 100%; oral bronchodilator use.

Understatements to avoid:

Downplaying how frequently you use your rescue inhaler. Not mentioning all medications because you think they are 'standard' treatment. Failing to report that a medication was recently added or increased.

Productive Cough and Sputum

How to describe:

Describe whether your cough is dry or productive. If productive, note the color (clear, white, yellow, green, blood-tinged), thickness, and quantity of sputum. Report how frequently you cough - intermittently, daily, or nearly constantly. Note any blood-tinged sputum or frank hemoptysis.

Worst-day example:

“I cough every morning and throughout the day. I produce thick, yellowish-green sputum most mornings - sometimes half a cup or more. Occasionally I see streaks of blood in the sputum. The coughing is so forceful I sometimes vomit or lose bladder control.”

What the examiner listens for:

Frequency (intermittent vs. daily vs. near-constant); purulent sputum; hemoptysis; whether antibiotic courses are required - two or more antibiotic courses per year is a rating criterion for bronchiectasis.

Understatements to avoid:

Saying 'I just have a little cough' when you actually cough multiple times an hour or produce significant sputum daily.

Wheezing and Chest Tightness

How to describe:

Describe the frequency, triggers, and severity of wheezing and chest tightness. Note whether wheezing is audible to others or only heard through a stethoscope. Identify triggers (cold air, allergens, smoke, exercise, respiratory infections, stress). Report whether wheezing wakes you from sleep.

Worst-day example:

“On my worst days, my wheezing is audible across the room. My chest feels like someone is sitting on it. I cannot finish a full sentence without stopping to wheeze. Cold air or even walking to the mailbox triggers an attack. I wake up at least 3 nights a week wheezing.”

What the examiner listens for:

Audible wheezing; nocturnal symptoms; trigger identification; whether attacks require emergency treatment or are managed at home.

Understatements to avoid:

Saying you don't wheeze on exam day (a normal exam-day presentation is common for asthma) without mentioning your history of documented attacks. Per 38 CFR 4.97 DC 6602 Note, a verified history of attacks must be of record.

Functional and Occupational Impact

How to describe:

Describe specific activities you can no longer perform or have had to significantly modify due to your respiratory condition. Include work limitations (missed days, inability to perform physical tasks, need for accommodations), social limitations, and activities of daily living. Be specific - name the activities and quantify the limitation.

Worst-day example:

“I had to leave my job as a warehouse worker because I could not tolerate dust or physical exertion without severe attacks. I now work a sedentary desk job and miss approximately 3-4 days per month during exacerbations. I cannot mow my lawn, carry groceries, or play with my grandchildren. I have to sit while showering and sleep with the head of my bed elevated.”

What the examiner listens for:

Work absences and job modifications; inability to perform sustained physical activity; social withdrawal due to breathlessness; impact on sleep; need for assistance with ADLs.

Understatements to avoid:

Saying 'I can still work' without mentioning how severely limited you are at work, how many days you miss, or what accommodations you require.

Common Mistakes to Avoid

Prep Checklist

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Before Your Exam

Day Of

During the Exam

After the Exam

Your Rights During a C&P Exam

  • You have the right to request a copy of your completed DBQ and C&P exam report through a FOIA/Privacy Act request or by asking your VA Regional Office.
  • You have the right to record your C&P examination in most states. Check whether your state requires one-party or two-party consent before recording. Notify the examiner at the start of the exam.
  • You have the right to have your claim rated based on your worst-day presentation, not just your status on the exam day, per M21-1 adjudication guidance.
  • You have the right to submit additional evidence (medical records, buddy statements, private IMOs) after the exam and before the rating decision is issued.
  • You have the right to challenge an inadequate C&P exam. If the examiner failed to consider all evidence, did not perform required testing (such as spirometry), or provided an opinion without adequate rationale, you may request a new exam through a Notice of Disagreement or Supplemental Claim.
  • You have the right to be accompanied by a representative (VSO, accredited attorney, or claims agent) or a support person at your exam.
  • You have the right to submit a personal statement (VA Form 21-4138 or 21-10210) describing your symptoms and their impact in your own words, independent of the examiner's documentation.
  • Under 38 CFR 4.96, certain coexisting respiratory conditions may not be separately evaluated. However, you have the right to claim all service-connected respiratory conditions, and the VA must explain any decision not to separately evaluate them.
  • You have the right to request that your examination be rescheduled if you are acutely ill on the exam day and cannot accurately represent your typical condition - document this request in writing.
  • If pulmonary function testing was not performed at your exam, you have the right to request that the examiner justify this omission or request a supplemental exam that includes spirometry, as PFTs are required for proper rating under 38 CFR 4.97.

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This C&P exam preparation guide is for educational purposes only and does not constitute legal, medical, or claims advice. Always consult with a qualified Veterans Service Organization (VSO) representative or VA-accredited attorney for guidance specific to your claim. Never exaggerate, minimize, or fabricate symptoms during a C&P examination.