Pulmonology (Respiratory)
Sleep Apnea, Asthma, Chronic Rhinitis & Sinusitis, COPD & Chronic Bronchitis, Constrictive Bronchiolitis, Pulmonary Fibrosis & Interstitial Lung Disease
Respiratory claims run on two very different engines. Sleep apnea, the most claimed condition in this system, usually travels as a secondary claim through PTSD or weight gain. The airway diseases, asthma, rhinitis, sinusitis, run on burn pit exposure and the PACT Act presumptives. Our licensed clinicians prepare nexus letters and independent medical opinions for both, plus the harder cases: COPD that needs a real causation analysis, and constrictive bronchiolitis that standard breathing tests miss. We focus on the medicine. A confirmed diagnosis supported by a clear medical rationale, including the underlying mechanism and reasoning based on your medical records and current medical literature.
About Pulmonology (Respiratory) Claims
Sleep apnea dominates this category. It is among the most claimed and most granted conditions in the VA system, and the 50% rating that accompanies a required CPAP makes it one of the most consequential. Most of these claims are not direct. They arrive as secondary claims, usually through PTSD, sometimes through weight gain caused by another service-connected condition. The medical literature supports these theories. Denials happen when the opinion asserts the link in a single sentence instead of explaining it.
The second engine is exposure. The PACT Act made asthma, chronic rhinitis, and chronic sinusitis presumptive for veterans with qualifying burn pit and airborne hazard exposure. No causation opinion needed. What still needs work is severity, because the airway conditions are rated on pulmonary function testing and treatment frequency, and those numbers have to be in the record. COPD sits outside the presumptive lists entirely, so it needs a genuine causation analysis that characterizes the exposure and deals with smoking history head on. Then there is constrictive bronchiolitis, the burn pit signature disease, which can leave a veteran unable to climb stairs while the standard breathing tests read nearly normal.
A note on timing. The VA has proposed changing how sleep apnea is rated, moving toward how well treatment controls the condition rather than whether a CPAP is prescribed. The change is not final, claims are generally decided under the criteria in effect at decision time, and existing ratings carry protections. The practical guidance is straightforward: veterans with valid claims are better served filing now than waiting.
No medical opinion can guarantee a VA outcome. What clear, credible, well-documented evidence can do is give the claim its strongest foundation. Our role is the medicine and the documentation. The decision on the claim rests with the VA.
Pulmonology (Respiratory) Conditions
Click any condition to view its dedicated page with DC codes, rating criteria, secondary connections, and specialist guidance.
We are currently updating our list of specific conditions in this category. Contact us for a free consultation about your specific claim.
Why Pulmonology Claims Can Be Challenging
Understanding these challenges in advance is the first step toward building a clearer medical record — and knowing where additional evidence may help.
No In-Service Sleep Study
Very few veterans received a sleep study during service. The claim runs on lay evidence instead. Your statement, and buddy statements from anyone who heard you stop breathing at night. Then an opinion bridges those observations to today's diagnosis.
The One-Sentence Secondary Opinion
PTSD to sleep apnea is medically supportable, and routinely denied, because the opinion asserted the link instead of explaining hyperarousal, medication weight gain, and sleep architecture. Mechanism wins these claims.
PFT Technicalities Move Ratings
Pre-bronchodilator or post. FEV-1 or DLCO. Which value the examiner used can shift a rating a full step, and C&P exams get this wrong often enough that checking is worth it.
Normal Tests Despite Real Impairment
Constrictive bronchiolitis hides from standard PFTs. A veteran who can no longer climb stairs can test nearly normal. The argument has to be built on functional impairment and advanced imaging.
The Smoking Question
For COPD the VA will raise smoking history whether the opinion does or not. An opinion that ignores it gets discounted. One that addresses it and still explains the service contribution gets weighed.
A Moving Rating Schedule
The proposed sleep apnea rating change creates real urgency confusion. Claims are decided under criteria in effect at decision time and existing ratings have protections, so the answer is to file valid claims now, not to wait.
Medical Evidence Services for Pulmonology Claims
Clinician-led services support respiratory claims at different stages. Each one focuses on the evidence: the right diagnostic test, a real mechanism, and severity in rating terms.
Independent Medical Opinion / Nexus Letter
A clinician's written opinion on whether a condition is at least as likely as not connected to service, with the supporting medical rationale.
When you need to establish or strengthen the causal link — particularly for secondary claims or a claim that was previously denied.
Writes the PTSD to sleep apnea mechanism in full. Builds the obesity intermediate-step chain link by link. Characterizes deployment exposures for COPD and handles the smoking analysis the VA will demand. Covers every supported theory in one letter.
Disability Benefits Questionnaire (DBQ)
Standardized disability questionnaires completed by licensed clinicians to evaluate the severity of your conditions according to VA rating criteria.
When you are filing for an initial rating, an increase, or need to document current functional impairment for a C&P exam.
Documents CPAP requirement and compliance for the 50% level, records PFT values against the rating thresholds, and captures treatment frequency for the airway conditions. The numbers the rating actually uses.
Claim Readiness Review
A pre-filing review of your medical records to identify what is already documented and what evidence may be missing.
Before filing or refiling, when you want a clear, honest picture of where a claim stands medically.
Checks whether a sleep study or current PFTs exist, whether lay statements cover the in-service symptoms, whether PACT Act eligibility was ever screened, and whether the secondary mechanism has support in your records. Before you file, not after the denial.
Looking for a DBQ instead? Disability Benefits Questionnaires are handled within our separate DBQ service for pulmonology (respiratory). This page covers the Nexus Letter and Independent Medical Opinion service line.
Why Provider Specialty Matters
The clinician who writes an opinion shapes how persuasive it is. There is no single "best" provider for every claim — the right fit depends on the condition and the medical questions involved.
Pulmonologist
The strongest choice when the case is technical. Borderline or conflicting pulmonary function tests. Constrictive bronchiolitis and interstitial disease, where the diagnosis itself is the argument. Or a contested opinion at the Board, where specialist authority carries the day. Specialist review earns its cost in exactly the places a general opinion falls short.
Internal Medicine
The right fit for most respiratory claims. Once a sleep study or PFT establishes the diagnosis, an internist writes the PTSD to sleep apnea mechanism, the obesity intermediate-step chain, and the COPD exposure analysis, covering every supported theory in one letter. Most respiratory claims are decided by medical reasoning that connects several body systems, which is the core of internal medicine.
Nurse Practitioners
The practical fit for well-documented claims with a clear path. A PACT Act asthma presumptive that just needs severity documented, or a direct sleep apnea claim with strong buddy statements. Many have worked as C&P examiners, so they know firsthand what the VA looks for, at the most accessible price point.
Our approach: we match each veteran to a clinician whose expertise fits the medical questions in their case.
Read the full Specialist GuideVeterans Usually Pair Pulmonology With These Systems
Pulmonology pairs most often with mental health (PTSD driving sleep apnea), cardiology (sleep apnea driving hypertension and AFib), oncology (respiratory cancers), and gastroenterology (reflux interacting with airway disease).
Frequently Asked Questions
Yes, through three main routes. Directly, when symptoms like loud snoring, witnessed apneas, or daytime exhaustion were documented or observed during service, even if the sleep study came later. Secondarily, when another service-connected condition such as PTSD caused or aggravated it. Or through aggravation, when service or a service-connected condition made pre-existing sleep apnea worse. A current diagnosis by sleep study is required in every case.
This is one of the most commonly filed secondary claims in the VA system, and the medical literature supports a relationship. Chronic hyperarousal fragments sleep architecture, psychiatric medications promote weight gain, and disturbed sleep and airway physiology interact in both directions. The claim succeeds or fails on whether the opinion spells out that mechanism for your specific case rather than asserting the link in one sentence.
Yes. Asthma diagnosed after service is presumptive for veterans with qualifying burn pit and airborne hazard exposure, alongside chronic rhinitis and chronic sinusitis. The presumption handles the connection. The rating still depends on medical evidence, mainly pulmonary function testing and the frequency of treatment.
Often yes, and they are among the most overlooked PACT Act presumptives. The individual ratings may be modest, but they add to the combined rating, they document airway disease that supports related claims, and chronic upper airway obstruction can aggravate sleep apnea. For a veteran with qualifying exposure, these are usually low-effort, well-supported claims.
COPD is not on the presumptive lists, so it needs a real causation opinion. That opinion characterizes the exposure, whether burn pits, diesel exhaust, sand and particulate matter, or occupational dusts, addresses smoking history honestly, and explains why service exposure is at least as likely as not a cause or a meaningful contributor. Claims that skip the smoking analysis tend to get denied, because the VA will not skip it.
A scarring disease of the small airways linked to burn pit and sulfur fire exposure, often in veterans whose breathing tests look nearly normal while their exercise tolerance has collapsed. Standard pulmonary function tests frequently miss it. Documentation may require high-resolution CT or, in some cases, lung biopsy, and the rating argument turns on functional impairment the usual tests fail to capture.
No. Very few veterans were tested in service. What matters is competent evidence that symptoms existed then, and lay evidence counts. Your own statement about snoring and exhaustion, plus buddy statements from anyone who shared quarters and heard you stop breathing at night. A nexus opinion then bridges those observations to today's sleep study diagnosis.
Most respiratory conditions other than sleep apnea are rated on pulmonary function testing, chiefly FEV-1, the FEV-1 to FVC ratio, and DLCO, along with the intensity of treatment required. Which value applies, and whether the test was done before or after bronchodilator, can move a rating by a full step. This is exactly the kind of technical detail an independent medical review checks against the C&P exam.
Usually not. Once a sleep study or PFT establishes the diagnosis, an internal medicine physician can write a fully reasoned opinion covering the common theories. A pulmonologist earns the higher fee when the case is technical. Interpreting borderline or conflicting PFTs, constrictive bronchiolitis and interstitial disease, or a contested opinion at the Board. We recommend the least expensive provider whose credentials fit the case, and we will say which that is.
Potentially, as an intermediate step. Under VA General Counsel Precedent Opinion 1-2017, if a service-connected condition leads to obesity, for example a knee injury that ended your ability to run or a psychiatric medication that caused weight gain, and obesity is a substantial factor in causing the sleep apnea, secondary service connection may be available. The opinion has to document every link in that chain.
It is the medical-evidentiary standard used in nexus opinions. It means the probability of a connection is at least 50 percent, as likely as not. A clinician uses it to state, in medical terms, whether a condition is reasonably connected to service. It is a medical opinion, not a legal determination.
A discovery call is a no-obligation conversation about your conditions, your exposure history, and your goals. We talk through the pathways that might fit, whether that is a PACT Act presumptive, a PTSD to sleep apnea secondary theory, or a direct exposure claim, and explain whether additional medical evidence would help. There is no pressure to proceed. If a letter would not add value to your claim, we will tell you.
Nurse Practitioner · Single condition