Veterans with service-connected disabilities often develop additional health problems directly caused or worsened by those original conditions. The VA calls these secondary conditions, and they are fully claimable under federal law. If you have a rated service-connected disability and a new condition linked to it, you may qualify for additional monthly compensation without having to prove a direct tie to your military service.
This guide covers what qualifies as a secondary condition, a complete list of common examples by primary condition, the evidence you need, and the exact steps to file your claim in 2026.
What Is a VA Secondary Condition?
Under 38 CFR 3.310, a disability that is proximately due to or the result of a service-connected disease or injury is also service connected. In plain terms: if your already-rated condition causes or aggravates a new medical problem, that new problem can be service connected as a secondary condition.
There are two ways a secondary condition qualifies:
- Causation: Your service-connected condition directly caused the new condition to develop.
- Aggravation: Your service-connected condition worsened a pre-existing condition beyond its natural progression.
Both paths require the same three-part proof: a current diagnosis, an existing service-connected disability rated at 0% or higher, and a medical opinion (nexus letter) connecting the two.
Who Can File a Secondary Claim?
Any veteran with at least one service-connected disability, regardless of rating percentage, can file for secondary conditions. A 0% rating still counts. The VA does not automatically look for secondary conditions on your behalf. You must identify and file for them yourself.
Complete List of Common VA Secondary Conditions by Primary Condition
Secondary Conditions to PTSD
PTSD is among the most common primary conditions with secondaries, because it affects sleep, cardiovascular function, digestion, and mental health simultaneously.
| Secondary Condition | Typical VA Rating |
|---|
| Sleep apnea | 0%, 30%, or 50% |
| Hypertension | 10% to 60% |
| GERD / acid reflux | 10% to 30% |
| Migraines | 0% to 50% |
| Depression or anxiety (standalone) | 10% to 100% |
| Erectile dysfunction / sexual dysfunction | SMC-K (special monthly compensation) |
| Irritable bowel syndrome (IBS) | 0% to 30% |
| Cardiovascular disease | 10% to 100% |
| Substance use disorder | 0% to 100% |
| Obesity-related conditions | Varies |
Secondary Conditions to Back Injuries and Spine Conditions
Lumbar and cervical spine conditions alter posture and gait, which puts mechanical stress on other joints over time.
| Secondary Condition | Common Link |
|---|
| Knee conditions | Altered gait from back pain |
| Hip problems | Postural compensation |
| Shoulder issues | Favoring one side |
| Radiculopathy (arm or leg nerve pain) | Nerve compression from spine |
| Depression and anxiety | Chronic pain impact |
| Sleep disorders | Pain-related sleep disruption |
Secondary Conditions to Sleep Apnea
Sleep apnea causes systemic oxygen deprivation during sleep, which stresses nearly every organ system.
| Secondary Condition | Mechanism |
|---|
| Hypertension | Elevated blood pressure from oxygen drops |
| GERD | Negative pressure pulling stomach acid up |
| Atrial fibrillation | Cardiac stress from apnea episodes |
| Depression | Sleep deprivation effects |
| Pulmonary hypertension | Long-term oxygen deficit |
| Type 2 diabetes | Metabolic disruption |
Secondary Conditions to Knee Conditions
| Secondary Condition | Common Link |
|---|
| Hip conditions | Compensatory gait changes |
| Ankle or foot problems | Altered biomechanics |
| Lower back pain | Uneven weight distribution |
| Depression | Chronic pain and mobility loss |
Secondary Conditions to Diabetes (Type 2)
Diabetes affects blood vessels, nerves, and organ function throughout the body.
| Secondary Condition | Mechanism |
|---|
| Peripheral neuropathy | Nerve damage from elevated glucose |
| Erectile dysfunction | Vascular and nerve damage |
| Kidney disease (nephropathy) | Microvascular damage |
| Retinopathy (vision loss) | Retinal blood vessel damage |
| Cardiovascular disease | Accelerated atherosclerosis |
| Hypertension | Kidney-related blood pressure increase |
| Depression and anxiety | Chronic illness burden |
Secondary Conditions to Tinnitus
Tinnitus is frequently associated with secondary psychological and neurological conditions.
| Secondary Condition | Common Link |
|---|
| Anxiety | Chronic ringing-related distress |
| Insomnia | Difficulty falling asleep with tinnitus |
| Migraines | Auditory nerve involvement |
| Depression | Quality-of-life impact |
Secondary Conditions to Traumatic Brain Injury (TBI)
TBI can affect virtually every system in the body.
| Secondary Condition | Common Link |
|---|
| PTSD | Psychological trauma from injury event |
| Sleep disorders | Neurological disruption |
| Migraines | Nerve and brain tissue damage |
| Depression and anxiety | Frontal lobe changes |
| Vertigo and balance disorders | Inner ear and brain connection |
| Seizure disorders | Cortical irritation |
| Cognitive impairment | Direct neurological damage |
Secondary Conditions to Hearing Loss
| Secondary Condition | Common Link |
|---|
| Depression | Social isolation from hearing loss |
| Tinnitus | Cochlear damage overlap |
| Cognitive decline | Auditory deprivation effects |
How to File a VA Secondary Condition Claim
Step 1: Get a Formal Diagnosis
You need a current medical diagnosis in your records. The VA will not rate a condition that is not documented by a qualified medical provider. If you suspect a secondary condition, see your doctor and get the diagnosis in writing before filing.
Step 2: Confirm Your Primary Condition Is Service Connected
Your primary condition must already be service connected at any percentage, including 0%. Pull your VA rating decision letter to confirm the exact conditions and ratings already on file.
Step 3: Obtain a Nexus Letter
A nexus letter is the critical piece of evidence for secondary claims. It is a written medical opinion from a qualified provider that:
- Identifies your current diagnosis
- References your existing service-connected condition
- States the medical opinion using the standard "at least as likely as not" language (meaning 50% or greater probability)
- Explains the medical reasoning behind the opinion
The VA assigns its own Compensation and Pension (C&P) examiner, but getting your own independent nexus letter strengthens your claim significantly. Private physicians, VA-accredited medical providers, and telehealth nexus letter services can provide these.
Each secondary condition needs its own nexus letter with specific reasoning. One broad letter covering multiple conditions is generally insufficient.
Step 4: Gather Supporting Evidence
Beyond the nexus letter, collect:
- Relevant medical records showing the diagnosis and treatment history
- Buddy statements from people who can describe your symptoms and their impact
- Any VA treatment records documenting both conditions
- Lay statements from you describing the connection between conditions in your own words
Step 5: File VA Form 21-526EZ
Secondary conditions are filed using the same form as any VA disability claim: VA Form 21-526EZ. You can file:
- Online at va.gov/disability/file-disability-claim-form-21-526ez/ (fastest method)
- By mail to your regional VA office
- In person at a VA regional office
- Through a VSO (Veterans Service Organization) such as the DAV, VFW, or American Legion (free assistance)
On the form, clearly indicate the claim is for a secondary condition. Write something like: "Hypertension secondary to PTSD" or "Sleep apnea secondary to PTSD" so the VA routes it correctly.
Step 6: Attend the C&P Exam
After filing, the VA will likely schedule a Compensation and Pension exam. The examiner evaluates the secondary relationship. Attend this exam. Missing it without contacting the VA first will result in a denial.
Before the exam:
- Review your nexus letter and supporting evidence
- Be specific about how your primary condition affects or caused your secondary condition
- Do not minimize your symptoms
Step 7: Review Your Decision and Appeal if Denied
The VA issues a rating decision, usually within several months of filing. If denied or rated lower than expected, you have three appeals options:
- Supplemental Claim: Submit new and relevant evidence (most common path if you have additional medical records or a stronger nexus letter)
- Higher-Level Review: A senior VA rater reviews the original decision with no new evidence
- Board of Veterans' Appeals: A Veterans Law Judge reviews your case (takes longer but offers the most thorough review)
How Secondary Conditions Affect Your Combined Rating
VA ratings do not simply add together. The VA uses a combined ratings table, sometimes called the "VA math." For example, a 70% rating and a 30% secondary rating does not equal 100%. Instead, the VA treats the remaining "able-bodied" percentage at each step.
However, secondary conditions can push you past important thresholds. Veterans at 70% combined with a PTSD primary diagnosis and a 30% secondary condition may reach 80%, which significantly increases monthly compensation. Veterans at 90% or above may qualify for Total Disability based on Individual Unemployability (TDIU), which pays at the 100% rate even without a 100% schedular rating.
2026 VA Disability Pay Rates
Monthly compensation is based on combined rating and dependent status.
| Combined Rating | Veteran Alone (2026) | With Spouse |
|---|
| 10% | $175.51 | $175.51 |
| 20% | $346.95 | $346.95 |
| 30% | $537.42 | $600.47 |
| 40% | $774.16 | $855.92 |
| 50% | $1,102.04 | $1,201.71 |
| 60% | $1,395.93 | $1,513.45 |
| 70% | $1,759.19 | $1,895.34 |
| 80% | $2,044.89 | $2,198.43 |
| 90% | $2,297.96 | $2,469.73 |
| 100% | $3,831.30 | $4,059.74 |
Rates reflect the 2026 COLA adjustment. Exact figures for dependents vary with children and parents in the household.
Common Mistakes to Avoid
Not filing: The VA only rates conditions you claim. If you develop a legitimate secondary condition and never file, you receive no compensation for it.
Filing without a nexus letter: Secondary claims almost always require a medical opinion linking the two conditions. Filing without one dramatically increases the chance of denial.
Using vague nexus language: The letter must say "at least as likely as not." Softer language like "may be related" or "could be connected" does not meet the legal standard.
Overlooking aggravation: Many veterans assume they can only claim conditions the primary disability caused from scratch. If your service-connected condition made a pre-existing condition worse beyond its natural progression, that also qualifies.
Missing C&P exams: Missing a scheduled C&P exam without rescheduling through the VA typically results in an automatic denial.
Frequently Asked Questions
What is a VA secondary condition?
A VA secondary condition is a disability caused or worsened by an existing service-connected condition. Under 38 CFR 3.310, these conditions are eligible for additional disability compensation because the original service-connected disability created or aggravated them.
Do I need a nexus letter for every secondary condition?
Yes. Each secondary condition claim needs its own nexus letter with specific medical reasoning for that condition. The letter must use the "at least as likely as not" standard to meet the VA's legal threshold.
Can I file for secondary conditions if my primary rating is 0%?
Yes. A 0% service-connected rating still qualifies you to file secondary claims. The key is that the primary condition is officially service connected, regardless of the percentage assigned.
What is the strongest secondary condition to file for?
This depends on your situation, but sleep apnea secondary to PTSD is one of the most commonly approved and high-value secondaries, often rated at 50% when a CPAP is required. Hypertension and GERD secondary to PTSD are also frequently approved.
How long does a secondary claim take?
VA claims processing typically takes 100 to 150 days from filing, though complex claims or appeals can take longer. Filing with strong evidence, including a nexus letter and complete medical records, helps avoid delays from requests for additional information.
Can the VA reduce a secondary condition rating?
Yes. The VA can propose to reduce a rating if your condition improves or if evidence shows the original rating was assigned incorrectly. The VA must follow a specific process before any reduction, and you have the right to submit evidence and request a hearing.
What if the VA denies my secondary condition claim?
You can appeal using three paths: a Supplemental Claim with new evidence, a Higher-Level Review, or the Board of Veterans' Appeals. Most successful appeals after a secondary condition denial involve a stronger or more specific nexus letter.
Where can I get free help filing a secondary claim?
Veterans Service Organizations (VSOs) like the Disabled American Veterans (DAV), VFW, American Legion, and Paralyzed Veterans of America provide free claims assistance. Your VA regional office can also point you to accredited claims agents and attorneys.
Check what other federal and state benefits you may qualify for at benefitsusa.org/screener.
