Ischemic Heart Disease and Agent Orange: VA Rating and Compensation

If you are a Vietnam War veteran with ischemic heart disease, you may benefit from the Agent Orange exposure presumption, which makes it easier to get VA disability.

The VA rates IHD from 10% to 100%, based on how much physical activity the heart can handle before symptoms appear, but the complications it causes can also be claimed to increase the overall compensation.

This guide covers the VA rating criteria for ischemic heart disease, who is eligible for Agent Orange presumptive service connection, how to claim VA disability, what to do if your claim is denied, and how to pursue additional benefits for unemployability or secondary conditions resulting from the disease.

What Qualifies as Ischemic Heart Disease?

The VA essentially defines ischemic heart disease as involving reduced blood flow to the muscle of the heart. It includes coronary artery disease and atherosclerotic heart disease, but heart attacks in general and angina are also considered ischemic.

VA attorneys Carol Ponton and Kerry Baker explain which heart conditions are ischemic vs. non-ischemic for VA purposes:

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How Does the VA Rate Ischemic Heart Disease?

The VA rates ischemic heart disease at 10%, 30%, 60% or 100% under the General Rating Formula for Diseases of the Heart in 38 C.F.R. Section 4.104.

Ratings depend on Metabolic Equivalents of Task (METs), which measure how much physical exertion the heart can handle before symptoms such as dyspnea, fatigue, angina, dizziness, or syncope appear. One MET equals the energy cost of standing quietly at rest.

VA Rating	METs Level	Results in	Example of Exertion
100%	3 METs or less	heart failure symptoms	Slow walking, light housework, or getting dressed
60%	3.1-5.0 METs	heart failure symptoms	Gardening, climbing one flight of stairs, or walking at 4 mph
30%	5.1-7.0 METs	heart failure symptoms; or evidence of cardiac hypertrophy or dilatation confirmed by echocardiogram or equivalent	Mowing the lawn, bowling, or dancing
10%	7.1-10.0 METs	heart failure symptoms; or continuous medication required for control	Climbing stairs quickly, heavy yard work, or jogging

The VA often determines METs capacity through exercise stress testing. But it can also estimate METs level based on a clinical interview, particularly when exercise testing is not medically advisable.

If you believe that you were underrated because the C&P examiner wrongly estimated METs capacity, contact us to review your case (for free) and see how we can help.

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Ischemic Heart Disease Agent Orange Compensation and Paths to More Benefits

VA Rating	2026 Monthly Compensation
10%	$180.42
30%	from $552.47 (for a single veteran)
60%	from $1,435.02
100%	from $3,938.58

Extra amounts are added for dependents: spouse, children or parents. For instance, a veteran with ischemic heart disease rated 100%, who also has a spouse, a child and two dependent parents, receives $4,671.47 per month as of 2026.

Getting 100% VA Disability Compensation (and Possibly More)

Veterans who cannot maintain substantially gainful employment (regular work that pays above poverty level) due to heart disease may qualify for Total Disability based on Individual Unemployability. TDIU pays at the same rate as a 100% rating, even if the actual rating is lower.

Veterans rated 100% (or receiving TDIU) who need regular aid and attendance may also be eligible for Special Monthly Compensation (SMC), which provides additional payments above the standard 100% rate. Find out more about SMC.

Agent Orange Presumptive Service Connection for Ischemic Heart Disease

The VA added ischemic heart disease to its Agent Orange presumptive list in 2010, following the Veterans and Agent Orange: Update 2008 report from the National Academy of Sciences, which found evidence of an association between herbicide exposure and ischemic heart disease.

The presumption means that Vietnam War veterans don’t need to prove a direct link between Agent Orange and the ischemic heart disease diagnosis. You may be able to win a VA disability rating for IHD without:

• A nexus letter from a doctor
• In-service medical records showing heart problems
• Evidence that you personally handled or sprayed Agent Orange

You only need:

1. A current diagnosis of ischemic heart disease (or a qualifying form of it)
2. Qualifying military service in a location where Agent Orange was used

Diagnoses Accepted by the VA

The VA recognizes all of the following as forms of ischemic heart disease for presumptive service connection:

• Coronary artery disease (CAD)
• Atherosclerotic heart disease
• Arteriosclerotic cardiovascular disease
• Acute myocardial infarction (heart attack)
• Angina pectoris (stable and unstable)
• Coronary bypass surgery and coronary stenting residuals

If your doctor diagnosed you with coronary artery disease (the most common type), that is ischemic heart disease for VA purposes. You do not need a separate ischemic heart disease diagnosis.

The IHD presumption does not cover stroke, peripheral vascular disease, or other conditions that fall outside the generally accepted medical definition of ischemic heart disease.

Qualifying Military Service Locations and Dates

To qualify for Agent Orange presumptive service connection, you must have served in one of the following locations during the specified time period:

Vietnam

January 9, 1962 to May 7, 1975. Includes boots on the ground, service on inland waterways (Brown Water Navy), and service in the airspace above Vietnam.

Blue Water Navy Veterans

Veterans who served on offshore vessels in the waters surrounding Vietnam now qualify under the Blue Water Navy Vietnam Veterans Act of 2019. If your claim was previously denied because you served offshore, file a supplemental claim. Check our Blue Water Navy ship map to see if your vessel qualifies.

Thailand

February 28, 1961 to May 7, 1975. Covers veterans who served on or near the perimeter of Royal Thai Air Force Bases, including U-Tapao, Korat, Nakhon Phanom, Ubon, Udorn, and Takhli.

Korea

September 1, 1967 to August 31, 1971. Covers veterans who served in or near the Korean Demilitarized Zone (DMZ) in units identified by the Department of Defense as having been exposed to herbicides.

Cambodia

April 16, 1969 to April 30, 1969. Covers veterans who served at Krek Mimot or Kampong Cham Province.

Other Presumptive Locations

• Laos: December 1, 1965 to September 30, 1969
• Guam and American Samoa (including territorial waters): January 9, 1962 to July 31, 1980
• Johnston Atoll (including territorial waters): January 1, 1972 to September 30, 1977
• U.S. bases using contaminated C-123 aircraft: 1969 to 1986 (varies for specific bases)

Agent Orange and other tactical herbicides were also stored or used in places not covered by the presumption, including Puerto Rico and various U.S. military installations. Veterans who served at these locations must provide additional evidence for service connection.

Medical Evidence You Need for Your Claim

Presumptive service connection removes the need to prove causation, but you still need a medical diagnosis. The VA requires:

1. A current diagnosis from a qualified physician (MD, DO, or cardiologist); helpful evidence includes cardiology records, stress testing, catheterization reports, echocardiograms, electrocardiograms (EKG), or coronary CT angiography
2. Functional capacity evidence (METs testing) for proper rating assignment
3. Documentation of symptoms and their impact on daily activities

How to File Your Ischemic Heart Disease Claim

Filing a presumptive claim for ischemic heart disease is simpler than most VA disability claims because the VA already recognizes the connection between Agent Orange exposure and this condition. See how to file using VA Form 21-526EZ.

Filing Tips to Avoid Common Mistakes

• Do not accept a low rating without verifying the medical findings. Many veterans receive lower than expected ratings because their C&P examiner wrongly estimated METs capacity.
• Submit all medical records, including private cardiology records, before your C&P exam. Do not assume the VA already has your records.
• Consider a private cardiology opinion, if possible. A C&P examiner who is a general practitioner may not understand cardiac functional limitations as thoroughly as a specialist.
• Document how heart disease affects your daily life and work capacity. The VA looks at functional limitations, not just the diagnosis itself.

Previously Denied Claims and Effective Dates

If your ischemic heart disease claim was denied before 2010, you can file a supplemental claim with new and relevant evidence. In some cases, the effective date may go back years and be worth substantial retroactive compensation.

Blue Water Navy veterans whose claims were denied before the 2019 law change should also file supplemental claims. The VA is required to review these claims under the updated eligibility rules.

Temporary 100% Ratings After Heart Surgery

Veterans who undergo cardiac surgery related to ischemic heart disease receive a temporary 100% rating during the recovery period. This applies to:

• Coronary artery bypass grafting (CABG)
• Heart valve replacement
• Pacemaker or defibrillator implantation
• Percutaneous coronary intervention (angioplasty with stent placement)
• Heart transplant

After the recovery period, the VA schedules a new C&P examination to assess your residual functional limitations and assign a permanent rating.

Conditions Secondary to Ischemic Heart Disease

Ischemic heart disease often causes or worsens other medical conditions. You can file secondary service connection claims for conditions caused or aggravated by your heart disease. Each secondary condition adds to your combined VA disability rating.

Sleep Apnea Secondary to Ischemic Heart Disease

Cardiovascular conditions are linked to obstructive sleep apnea through shared risk factors and physiological mechanisms. Sleep apnea ratings range from 0% to 50%.

Erectile Dysfunction Secondary to Ischemic Heart Disease

Reduced blood flow from heart disease has been known to sometimes cause erectile dysfunction. The VA rates ED at 0% but awards Special Monthly Compensation (SMC-K) for loss of use of a creative organ.

Peripheral Artery Disease Secondary to Ischemic Heart Disease

The same atherosclerotic process that causes coronary artery disease often affects blood vessels in the legs and arms. Peripheral artery disease can be rated separately from your heart condition. See the VA ratings for PAD.

Depression and Anxiety Secondary to Ischemic Heart Disease

Chronic heart disease and its limitations on daily activities commonly lead to mental health conditions. Depression and anxiety are rated from 0% to 100% based on the severity of occupational and social impairment.

Stroke Secondary to Ischemic Heart Disease

Atherosclerotic disease increases the risk of cerebrovascular events including stroke and transient ischemic attacks. These conditions carry their own separate VA disability ratings.

Ischemic Heart Disease Secondary to Hypertension

Not every veteran with ischemic heart disease served in an Agent Orange exposure zone. But if you have service-connected hypertension, you could claim ischemic heart disease as a secondary condition.

Chronic high blood pressure damages arteries over time and is a well-established risk factor for coronary artery disease. To establish secondary service connection, you need:

• A service-connected hypertension rating (any percentage)
• A current diagnosis of ischemic heart disease or coronary artery disease
• A medical opinion (nexus letter) stating that hypertension at least as likely as not caused or aggravated the heart disease

This is especially valuable for veterans who served outside Agent Orange exposure areas. In addition to hypertension being a presumptive condition under the PACT Act, it is also presumptive if it manifests to a minimum rating of 10% within one year of discharge. It can then be used to service connect heart disease.

Common Denial Reasons and How to Appeal

Even with presumptive service connection, ischemic heart disease claims get denied. Understanding the most common reasons helps you avoid mistakes or build a stronger appeal.

• No current diagnosis. The VA denied the claim because medical records did not contain a confirmed ischemic heart disease diagnosis. Fix this by getting objective cardiac testing and resubmitting.
• Insufficient evidence of qualifying service. The VA could not verify that you served in a qualifying location during the required dates. Gather your DD-214, personnel records, and unit histories showing your service location.
• Flawed C&P examination. The examiner did not perform METs testing, provided an inaccurate METs estimate, or failed to consider all your symptoms. You can challenge an inadequate C&P exam by requesting a new examination or submitting a private medical opinion that contradicts the examiner’s findings.
• Rating too low (0% or underrated). The VA acknowledged the condition but assigned a lower rating than your symptoms warrant. This often happens when the examiner estimates METs capacity without actual stress testing. File a supplemental claim with new objective testing results.

Appeal Options

1. Request a Higher-Level Review if you believe the VA made an error in applying the law or evaluating your evidence. No new evidence is submitted.
2. File a Supplemental Claim if you have new and relevant evidence that was not part of your original claim. This is often the best path for underrated heart conditions.
3. Appeal to the Board of Veterans’ Appeals for complex cases. You can choose a direct review, submit additional evidence, or request a hearing with a Veterans Law Judge.

TDIU Benefits for Veterans with Ischemic Heart Disease

Total Disability based on Individual Unemployability (TDIU) allows veterans who cannot keep regular employment to receive compensation at the 100% rate, even if their combined rating is lower. You may qualify for TDIU if:

1. Your ischemic heart disease is rated at 60% or higher, or
2. Your combined rating is 70% or higher with ischemic heart disease rated at least 40%, or
3. You do not meet these thresholds, but heart disease nevertheless prevents employment (extraschedular TDIU)

For a TDIU claim, document how your heart condition limits your ability to work. Examples include inability to perform physical labor due to low METs capacity, frequent medical appointments, fatigue preventing full-time work, and restrictions from your cardiologist on physical exertion.

Get Help with Your Ischemic Heart Disease Claim

Repeated denials, unclear explanations, and long wait times can make it feel like the system is working against you. But the decision review process exists because the VA does get it wrong, and you have every right to push back.

Hill & Ponton’s VA-accredited attorneys have decades of experience helping disabled veterans secure the benefits they deserve. Whether you want to appeal a denial, increase your rating, or file a new claim for ischemic heart disease, we can help.

Request your free case evaluation today. We don’t charge anything upfront and only get paid if you get paid.