Aggravation of a Preexisting Condition Under 38 CFR 3.306

Start with the entrance exam, not the rumor

The first question is not "did I have this in high school?" The first question is what the service department wrote when it accepted you.

3.304(b) is blunt. You are considered to have been in sound condition when examined, accepted, and enrolled, except as to defects, infirmities, or disorders noted at entrance, or where clear and unmistakable (obvious or manifest) evidence demonstrates that an injury or disease existed prior thereto and was not aggravated by such service. Only conditions recorded in examination reports are "noted."

A recruiter's hallway chat is not a notation. A self-reported history on the form is not, by itself, a notation. 3.304(b)(1) says a history of preservice existence recorded at the examination does not constitute a notation of the condition. It is evidence. It gets weighed with the rest of the file. It does not automatically kick you out of the presumption of soundness.

If the entrance exam actually lists the defect, you are in a different lane. The condition was noted. Soundness does not attach to that defect. The fight moves to aggravation under 3.306.

Rebutting soundness is a two-part job

For wartime compensation under 38 U.S.C. 1110, section 1111 requires clear and unmistakable evidence of two facts: the injury or disease existed before acceptance and enrollment, and it was not aggravated by such service.

The Federal Circuit made VA apply both halves in *Wagner v. Principi*, 370 F.3d 1089 (Fed. Cir. 2004). Showing you had a trick knee in civilian life is not enough. VA also has to show, to the same high standard, that service did not aggravate it. The current text of 3.304(b) matches that statute. It is not "history plus a shrug."

3.304(b)(1) and (b)(2) tell raters not to lean on medical judgment alone, or history alone, without clinical factors and accepted medical principles. 3.304(b)(3) adds a service-era twist: a signed in-service statement by the veteran about origin, if against the veteran's own interest, has no force if other data do not establish the fact. Other evidence is read as if that statement were not there. Authority cited: 10 U.S.C. 1219.

Clear and unmistakable means obvious or manifest. That is the regulation's own parenthetical. It is a high bar on purpose.

When the condition really did preexist: 3.306

38 U.S.C. 1153 says a preexisting injury or disease will be considered to have been aggravated by active military, naval, air, or space service where there is an increase in disability during such service, unless there is a specific finding that the increase is due to the natural progress of the disease.

38 CFR 3.306(a) repeats that rule. 3.306(b) then sets the wartime and post-1946 peacetime standard. Clear and unmistakable evidence is required to rebut the presumption of aggravation where the preservice disability underwent an increase in severity during service. Medical facts and principles may be used to decide whether the increase is natural progress. Aggravation may not be conceded where the disability underwent no increase in severity during service, looking at manifestations before, during, and after service.

Two practical points hide in that paragraph.

First, you need an increase in disability during service. A flare that returns to the same baseline, with no lasting change, is the fight VA often picks. Temporary worse days are not automatically a permanent increase. The regulation still requires an increase, then lets VA try to prove natural progress.

Second, "no increase" is a record review, not a slogan. The file has to support it. A denial that never compares entrance, in-service treatment, and separation is not applying 3.306(b).

Combat and POW service get a specific aggravation rule

3.306(b)(2) is easy to miss and hard to overstate. Due regard goes to the places, types, and circumstances of service, with particular consideration for combat duty and other hardships. The development of symptomatic manifestations of a preexisting disease or injury during or proximately following action with the enemy, or following prisoner-of-war status, will establish aggravation of a disability. Authority: 38 U.S.C. 1154.

That is not the same as the combat incurrence rule in 3.304(d). This one assumes a preexisting condition and treats combat- or POW-linked symptomatic manifestations as aggravation. If that is your fact pattern, quote the paragraph. Do not let a rater treat it as ordinary natural-progress chatter.

What treatment in service does not automatically service-connect

3.306(b)(1) blocks a common overread. The usual effects of medical and surgical treatment in service, when that treatment ameliorates a disease or condition incurred before enlistment, are not service-connected unless the disease or injury is otherwise aggravated by service. Postoperative scars, absent or poorly functioning parts or organs from that kind of treatment, sit in this bucket.

So a surgery that repaired a preservice problem does not, by itself, convert the residual scar into a service-connected disability. If service otherwise aggravated the underlying condition, that is a different finding. The residual from the repair is not a backdoor grant.

Natural progress is a finding, not a vibe

"Natural progress" is the government's out. It has to be a specific finding, grounded in medical facts and principles, that the increase is what the condition would have done anyway. 3.306(c) uses even more clinical language for the older peacetime-before-December 7, 1941 cohort. Most modern claims sit under 3.306(b).

A sentence that says "this is just how knees age" without comparing your service duties, your in-service findings, and the accepted course of that disease is not a specific finding. Accepted medical principles can still support natural progress in a given case. The point is the standard, not a promised result.

How this sits next to the other three paths

The overview of direct, secondary, presumptive, and aggravation is already on the site. This post stays on aggravation of a condition that existed before service.

Do not mix this with secondary aggravation under 3.310(b). That rule is about a service-connected condition making a *nonservice-connected* condition worse after service. 3.306 is about service itself making a *preservice* condition worse. Same English word. Different regulation, different baseline, different rebuttal.

If the entrance exam is silent and VA cannot rebut soundness, the claim often plays as direct service connection of a condition that began in service, not as aggravation of a noted defect. That is why the notation question comes first.

What the file should show

Get the entrance exam, not just the DD-214. Get the in-service treatment notes, profiles, and separation exam. If a civilian record actually predates enlistment, include it. Hiding it does not help. The standard is high, but the rater still reads the whole folder.

A medical opinion that does useful work here addresses three questions: Was there an increase in disability during service? If so, is that increase the natural progress of the disease, or is it beyond that progress? If the condition was not noted at entry, is there clear and unmistakable evidence it preexisted and was not aggravated?

Lay evidence can describe what you could do before service, what you could do after the field problem, and what changed. It cannot substitute for the clinical comparison 3.306 requires.

FAQs

If I told the doctor at MEPS that I had asthma, is that "noted"?

Not by itself. 3.304(b) says only conditions recorded in examination reports are noted, and 3.304(b)(1) says a recorded history of preservice existence is not a notation. The exam has to record the defect as a finding. History still counts as evidence on inception.

Can VA deny aggravation just because the condition existed before service?

No. Preexistence, if proved, moves the claim to 3.306. The question becomes whether disability increased in service and whether that increase was natural progress.

What if my condition flared in service and then calmed down?

3.306(b) says aggravation may not be conceded where there was no increase in severity during service on the whole record. A temporary flare that left no increase is the fact pattern VA uses to refuse the presumption. Whether your file shows a lasting increase is case-specific.

Does combat automatically aggravate every preexisting problem?

3.306(b)(2) establishes aggravation when symptomatic manifestations of a preexisting disease or injury develop during or proximately following action with the enemy, or after POW status. It is a specific rule for that setting. It is not a blanket grant for every diagnosis in the file.

Is a preservice surgery residual service-connected because the surgery happened in uniform?

3.306(b)(1) says the usual effects of in-service treatment that ameliorates a preservice condition are not service-connected unless the disease or injury is otherwise aggravated by service.

Do I argue soundness and aggravation in the same claim?

You can. If the condition was not noted, soundness is the first fight. If VA rebuts soundness, or if the defect was noted, aggravation is the next fight. An accredited representative can plead both without pretending they are the same test.

Sources

• 38 U.S.C. 1111
• 38 U.S.C. 1153
• 38 CFR 3.304(b)
• 38 CFR 3.306
• *Wagner v. Principi*, 370 F.3d 1089 (Fed. Cir. 2004)

Disclaimer: Educational content only. Not legal or medical advice. Confirm against the veteran's actual notice and current eCFR / VA.gov. For claim-specific help, use a VA-accredited VSO, claims agent, or attorney.