Proving service connection for a VA disability claim normally requires three things: a current diagnosis, evidence of an in-service event or exposure, and a medical nexus connecting the two. That middle element, the in-service event, is often the hardest part of the claim. Records get lost. Conditions go untreated during service. Veterans leave without any documented basis for a future claim.
The one-year presumption for chronic conditions addresses this problem directly. For qualifying conditions that manifest to a compensable degree within one year of discharge, veterans don’t have to prove the in-service event at all. The law presumes it.
What the One-Year Presumption Actually Does
Under 38 U.S.C. § 1112 and 38 C.F.R. § 3.309(a), certain chronic diseases are presumed to be service-connected if they become manifest to a degree of 10% or more within one year after the veteran’s last period of active duty. The veteran still needs to establish that they served and that they have the diagnosis. What the presumption removes is the requirement to prove the causal connection between service and the condition.
This is meaningful because that nexus is often the most expensive and difficult element to establish. Without the presumption, a veteran needs a medical opinion explaining how their military service caused or contributed to the condition. With the presumption, that opinion isn’t required for qualifying chronic conditions that appear within the one-year window.
Which Conditions Qualify Under 38 C.F.R. 3.309(a)
The VA’s list of qualifying chronic conditions under this regulation is specific. It includes:
- Anemia, primary
- Arteriosclerosis
- Arthritis
- Atrophy, progressive muscular
- Brain hemorrhage
- Brain thrombosis
- Bronchiectasis
- Calcified lesions of the brain
- Cardiovascular-renal disease, including hypertension
- Cirrhosis of the liver
- Coccidioidomycosis
- Diabetes mellitus
- Encephalitis lethargica residuals
- Endocarditis
- Endocrinopathy
- Epilepsies
- Hemorrhagic diseases
- Leprosy
- Lupus erythematosus, systemic
- Myasthenia gravis
- Myelitis
- Myocarditis
- Nephritis
- Organic diseases of the nervous system
- Osteitis deformans (Paget’s disease)
- Osteoporosis
- Pulmonary tuberculosis
- Raynaud’s disease
- Sarcoidosis
- Scleroderma
- Seizures
- Sickle cell anemia
- Tropical diseases and their sequelae
- Ulcers, peptic (gastric or duodenal)
If a veteran has one of these conditions and it manifested to a compensable degree within one year of discharge, the presumption applies regardless of whether there’s any documented in-service treatment or event.
What “Manifest to a Compensable Degree” Actually Means
The condition doesn’t have to be severe during the one-year window. It has to be present and rated at a compensable level, meaning at least 10% under the VA’s rating schedule, within that period. A condition that appeared during the window but wasn’t diagnosed until later can still qualify if the evidence shows it was present within the one-year timeframe.
This is an important distinction. Veterans who had symptoms during the first year after discharge but didn’t seek treatment, or who were diagnosed slightly later, shouldn’t assume the presumption is unavailable. The evidence question is when the condition was actually present, not necessarily when it was formally diagnosed.
When the One-Year Window Starts Running
The one-year period begins on the date of the veteran’s last separation from active duty. For veterans who had multiple periods of service, the relevant period is the last qualifying period of active duty. Reservists and National Guard members who were activated and then separated may have qualifying periods that trigger the presumption from the date of their return to inactive status.
Getting the start date right matters when the evidence of a condition’s onset is close to the edge of the one-year window. A Texas service-connected disability lawyer evaluates the timeline carefully, because a claim that appears to fall outside the window may actually qualify when the correct separation date is applied.
What to Do If You Have a Qualifying Condition
The one-year presumption is a tool, not an automatic benefit. Veterans still need to file a claim, submit their discharge paperwork and medical evidence establishing the diagnosis, and present their case in a way that clearly invokes the applicable presumption. Claims that aren’t framed correctly may still be denied even when the underlying facts support service connection.
Glover Luck LLP represents Texas veterans in service connection claims, including those involving the one-year chronic disease presumption. If you have a condition on the qualifying list and believe it appeared within a year of your discharge, reach out to a Texas service-connected disability lawyer to discuss your situation and find out whether a claim or an appeal makes sense.
