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Service exposure

What to Do When No Presumptive List Matches Your Condition

Direct service connection does not require the condition to appear on any presumptive list. 38 CFR 3.303(d) allows service connection for a disease diagnosed after discharge when the evidence establishes it was incurred in service. That route needs a current diagnosis, an in-service event or exposure, and a medical opinion linking them.

Published 2026-08-21. Last updated 2026-09-14. Written and reviewed under Veteran Health Network's institutional review process.

What is direct service connection?

Direct service connection is the ordinary route. A file establishes three things: a current diagnosed condition, an event, injury, illness, or exposure during service, and a medical opinion connecting the two. Nothing in that route depends on a list.

The three-element description is worth attributing correctly, because it is quoted as regulation text constantly and it is not. It comes from federal court decisions and from VA's own adjudication manual, M21-1. The regulation itself, 38 CFR 3.303, is written differently.

The medical opinion is the piece the presumptive route skips. It is a clinician's stated judgment about whether the condition is at least as likely as not related to the in-service event, with reasoning attached. A conclusion with no reasoning behind it carries little weight, whoever signs it.

What does 38 CFR 3.303 actually say?

Paragraph (a) sets the general principle: service connection 'basically means that the facts, shown by evidence, establish that a particular injury or disease resulting in disability was incurred coincident with service in the Armed Forces, or if preexisting such service, was aggravated therein.'

Paragraph (d) is the sentence that answers the question this page exists for. 'Service connection may be granted for any disease diagnosed after discharge, when all the evidence, including that pertinent to service, establishes that the disease was incurred in service.' A diagnosis that arrives decades later is not disqualified by its timing.

Paragraph (b) covers chronicity and continuity. Where a chronic disease was shown as such in service, later manifestations of the same disease at any remote date are service connected unless clearly attributable to intercurrent causes.

What if there is no record of the in-service event?

Several regulations already anticipate that. They are not exceptions someone has to argue their way into.

38 CFR 3.304(f)(2) covers combat. Where the evidence establishes that the veteran engaged in combat with the enemy, the claimed stressor is related to that combat, and it is consistent with the circumstances, conditions, or hardships of service, lay testimony alone may establish that the stressor occurred, absent clear and convincing evidence to the contrary.

38 CFR 3.304(f)(3) covers fear of hostile military or terrorist activity, on similar terms, where a VA psychiatrist or psychologist confirms the stressor supports the diagnosis. 38 CFR 3.304(f)(4) covers prisoner-of-war experience. 38 CFR 3.304(f)(5) covers personal assault and military sexual trauma, where evidence from law enforcement, hospitals, rape crisis centers, counseling centers, family, fellow service members, or clergy may corroborate the account, and so may evidence of behavior changes after the assault.

For Gulf War claims, 38 CFR 3.317(a)(3) states that objective indications of chronic disability include non-medical indicators capable of independent verification. Employment records and observable change described by people who knew the veteran are evidence under that provision.

What about a condition caused by an already service-connected one?

That is secondary service connection, and it is its own regulation. 38 CFR 3.310(a): 'Disability which is proximately due to or the result of a service-connected disease or injury shall be service connected.'

Paragraph (b) covers aggravation. Any increase in severity of a non-service-connected condition that is proximately due to or the result of a service-connected condition, and not due to the natural progress of the non-service-connected condition, will be service connected.

The evidence shape is the same as any direct claim: a diagnosed secondary condition, the established service-connected condition, and a medical opinion connecting them.

Are there exposure routes that are not presumptions?

Yes, and one of them is a full regulatory procedure that most writing on radiation never mentions. 38 CFR 3.311 handles claims where a radiogenic disease first became manifest after service and the veteran contends it came from in-service ionizing radiation. It is open to any claimed exposure, not only the enumerated cohorts: the trigger at 3.311(b)(1)(i) reads 'or other activities as claimed.'

Its disease list is different from the presumptive one and in places broader. The 24 radiogenic diseases at 3.311(b)(2) include skin cancer, kidney cancer, urinary bladder cancer, posterior subcapsular cataracts, non-malignant thyroid nodular disease, parathyroid adenoma, cancer of the rectum, prostate cancer, and a catch-all entry for any other cancer. Prostate cancer, for instance, is not on the 21-item presumptive list at 3.309(d)(2) but is named here.

3.311 is not an automatic grant, and the regulation says so. VA obtains a dose assessment, and where the dose is reported as a range, exposure at the highest level in the range is presumed. The file then goes to the Under Secretary for Benefits, and where causation cannot be determined, to an outside consultant selected from a list recommended by the Director of the National Cancer Institute. Latency rules apply under 3.311(b)(5). The decision is then made on all the evidence of record.

Camp Lejeune has a similar split. Fifteen conditions are covered for VA health care under 38 USC 1710(e)(1)(F), but only eight are presumptive for disability compensation under 38 CFR 3.309(f). Breast cancer, lung cancer, esophageal cancer, renal toxicity, hepatic steatosis, female infertility, miscarriage, scleroderma, and neurobehavioral effects fall in the first group and not the second. For compensation, those go through the direct route with a medical opinion.

Herbicide test and storage sites work the same way. The Department of Defense maintains a list of locations where tactical herbicides were tested, used, or stored outside Vietnam. No statute or regulation attaches a presumption of exposure to those sites. The PACT Act legislated five specific locations where presumptions apply; everything else on the list is established on the facts of the individual record.

What does a claim like this need in the file?

A current diagnosis, stated by a clinician and coded to the specificity the evidence supports. Documentation of what the condition does to work, sleep, and daily activity, in terms concrete enough to rate. Evidence of the in-service event or exposure, which for exposure claims usually means location and dates. And a medical opinion connecting the condition to service, with reasoning.

A VA-accredited Veterans Service Organization representative can prepare and file this and does not charge for it. That holds for direct claims exactly as it does for presumptive ones.

Questions

My condition is not on any presumptive list. Is that the end of the claim?

No. 38 CFR 3.303(d) allows service connection for any disease diagnosed after discharge when the evidence establishes it was incurred in service. Direct service connection is a full route and does not require the condition to appear on a presumptive list.

What is the difference between direct and presumptive service connection?

A presumption answers the cause question by law, so the file does not have to prove why the condition happened. A direct claim proves it with evidence, usually a medical opinion connecting the condition to a documented in-service event or exposure.

Camp Lejeune covers my condition for health care but not for compensation. What now?

The health care list at 38 USC 1710(e)(1)(F) has 15 conditions; the compensation presumptive list at 38 CFR 3.309(f) has eight. For a condition on the first list only, compensation runs through direct service connection with a medical opinion.

Is there a radiation route for a cancer that is not on the presumptive list?

38 CFR 3.311 covers 24 radiogenic diseases and is open to any claimed in-service ionizing radiation exposure. It is a dose assessment procedure rather than a presumption, and it reaches conditions like prostate cancer and skin cancer that are absent from 38 CFR 3.309(d)(2).

Can a condition caused by an existing service-connected condition be claimed?

Yes. 38 CFR 3.310(a) service connects a disability proximately due to or the result of a service-connected condition, and 3.310(b) covers aggravation of a non-service-connected condition by a service-connected one.

Does a late diagnosis hurt a direct claim?

Timing alone does not disqualify it. 38 CFR 3.303(d) expressly permits service connection for a disease diagnosed after discharge, and 3.303(b) covers later manifestations of a chronic disease shown in service, however remote.

Sources

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