Ischemic Heart Disease VA Disability Claim: Rating, Evidence & Agent Orange (2026)

What Is Ischemic Heart Disease for VA Purposes?

Ischemic heart disease (IHD), also called coronary artery disease (CAD) or coronary heart disease, is a condition where the coronary arteries become narrowed or blocked, reducing blood flow to the heart muscle. ICD-10 codes relevant to IHD claims include I20–I25, encompassing angina pectoris (I20), acute myocardial infarction (I21–I22), and chronic ischemic heart disease (I25).

For VA disability purposes, IHD is rated under 38 CFR § 4.104, Diagnostic Code 7005 (Arteriosclerotic heart disease, which is the code used for coronary artery disease broadly). The VA recognizes IHD through multiple diagnostic pathways:

• Documented myocardial infarction (heart attack) — past MI shown on EKG or cardiac enzyme tests
• Coronary artery stenosis ≥ 50% — confirmed by cardiac catheterization or coronary angiography
• Angina pectoris with documented ischemic changes — confirmed by stress testing, nuclear imaging, or cardiac catheterization
• Positive stress test with imaging evidence of ischemia — exercise stress echo, nuclear stress test, or cardiac PET scan showing perfusion defects

The VA's M21-1 Adjudication Manual recognizes that IHD can present years or even decades after initial toxic exposure, which is why the presumptive framework under 38 CFR 3.309(e) is particularly important for Vietnam veterans. See the full list of Agent Orange presumptive conditions to understand how IHD fits into the broader presumptive framework.

Agent Orange Presumptive: Who Qualifies Automatically

Under 38 CFR § 3.309(e), ischemic heart disease is a presumptive service-connected condition for veterans who were exposed to Agent Orange or other herbicide agents. This is one of the most significant presumptive conditions in the VA system — it means qualifying veterans do not need to prove that their heart disease is related to their military service. The VA presumes the connection.

Who Qualifies for the AO Presumptive?

Veterans who served in any of the following locations or circumstances are presumed to have been exposed to Agent Orange under 38 CFR § 3.307(a)(6):

• Vietnam (Republic of Vietnam), January 9, 1962 – May 7, 1975 — includes service in the waters offshore (the "Blue Water Navy" expansion, effective January 1, 2020)
• Korea, April 1, 1968 – August 31, 1971 — veterans who served in the Korean DMZ
• Thai military bases, 1961–1975 — veterans assigned to specific Royal Thai Air Force Bases
• C-123 aircraft crew members — veterans who flew or worked on C-123 aircraft used to spray Agent Orange
• Veterans with verified herbicide storage/testing at U.S. bases

If you served in Vietnam but do not have a documented diagnosis of IHD yet, you should consider getting a cardiac evaluation now. Many veterans have subclinical coronary artery disease that has not been formally diagnosed. An echocardiogram, stress test, or coronary calcium score CT can confirm IHD and establish the current diagnosis needed to file a claim. The PACT Act of 2022 also expanded presumptive coverage for burn pit and toxic exposure veterans — check if your service history qualifies under additional frameworks.

How the VA Rates IHD: DC 7005 Rating Criteria

Ischemic heart disease is rated under 38 CFR § 4.104, Diagnostic Code 7005. The rating is based primarily on two objective measures: (1) metabolic equivalent of task (MET) scores from exercise stress testing, and (2) ejection fraction from echocardiography. The VA rates whichever produces the higher rating — not an average of both.

Rating %	METs Criteria (Exercise Capacity)	Ejection Fraction (EF)	Monthly Pay 2026
100%	Chronic congestive heart failure, or; workload of 3 METs or less results in dyspnea, fatigue, angina, dizziness, or syncope, or; left ventricular dysfunction with EF less than 30 percent	EF < 30%	$3,737.85
60%	More than 3 METs but not more than 5 METs results in dyspnea, fatigue, angina, dizziness, or syncope, or; left ventricular dysfunction with EF of 30 to 50 percent	EF 30–50%	$1,395.93
30%	More than 5 METs but not more than 7 METs results in dyspnea, fatigue, angina, dizziness, or syncope, or; a workload greater than 7 METs but with continuous medication required	EF > 50% with 5–7 METs limitation	$537.42
10%	Workload greater than 7 METs but not greater than 10 METs results in dyspnea, fatigue, angina, dizziness, or syncope, or; continuous medication required	EF > 50% with medication	$175.51

Note that the DC 7005 rating system uses whichever criterion — METs or ejection fraction — results in the higher rating. A veteran with an EF of 35% (which falls in the 30–50% range) would be rated at 60% regardless of their METs score. Similarly, a veteran who can only tolerate 3 METs of activity would be rated at 100% even if their ejection fraction is preserved at 55%.

METs Tests and Ejection Fraction Explained

What Are METs and Why Do They Matter?

A metabolic equivalent of task (MET) is a unit of measure for physical exertion. One MET is the energy expended at rest. The higher your MET capacity, the more physical activity you can sustain without symptoms. For VA rating purposes:

• 1–3 METs: Very limited activity (brushing teeth, slow walking) — 100% rating range
• 3–5 METs: Light activity (walking slowly on flat ground, desk work) — 60% rating range
• 5–7 METs: Moderate activity (walking briskly, light housework) — 30% rating range
• 7–10 METs: Moderate-vigorous activity (cycling, swimming at moderate pace) — 10% rating range

METs are typically measured through a treadmill exercise stress test or a nuclear stress test (myocardial perfusion imaging). During the test, the cardiologist records at what exertion level you develop symptoms — chest pain, shortness of breath, dizziness, or fatigue. The MET level at symptom onset is the key number for your VA rating.

Critical documentation tip: Make sure your stress test report explicitly states the MET level at which symptoms occurred. A report that simply says "test was stopped at 7 minutes" without documenting the MET level is inadequate for VA rating purposes. Request that your cardiologist add the MET value to the report if it is missing.

Ejection Fraction: What the Number Means

Ejection fraction (EF) is a measurement of how much blood the left ventricle pumps out with each heartbeat. A normal EF is 55–70%. For VA rating purposes:

• EF < 30%: Severely reduced — 100% rating
• EF 30–50%: Moderately reduced — 60% rating
• EF > 50%: Normal or mildly reduced — rated on METs criteria

EF is typically measured by echocardiogram (transthoracic or transesophageal), cardiac MRI, or nuclear ventriculography. The echocardiogram is the most commonly used method and is widely available. If your VA file contains echocardiogram results, the EF measurement should be clearly documented — usually as a percentage in the conclusion section of the echo report.

Evidence Checklist: What You Need to File

Building a complete evidence package before filing significantly improves your chances of an accurate rating decision on the first attempt. For an IHD claim, gather the following:

Service Records

• DD-214 showing service in Vietnam (or Korean DMZ, Thai air bases, etc.) — this is the primary proof of herbicide exposure for the AO presumptive
• Unit history or deployment records if your DD-214 doesn't clearly show Vietnam service dates
• For Blue Water Navy veterans: ship deck logs and VA Form 21-4142 (authorization to access records) for the ship's records to confirm location in Vietnamese waters
• Service treatment records — any in-service documentation of chest pain, cardiovascular symptoms, hypertension, or related issues

Current Medical Records

• Exercise stress test with documented MET level at symptom onset — this is the single most important document for the rating
• Echocardiogram with ejection fraction measurement
• Cardiac catheterization or coronary angiography showing degree of coronary artery stenosis (if performed)
• Records of myocardial infarction — hospital records, EKG changes (Q waves), or cardiac enzyme elevation (troponin, CK-MB)
• Current medication list — antianginals, beta-blockers, nitrates, and other cardiac medications are relevant to the 30% "continuous medication required" criterion
• Cardiology treatment notes documenting symptoms, functional limitations, and ongoing care

VA Forms to File

• VA Form 21-526EZ — Application for Disability Compensation and Related Compensation Benefits
• VA Form 21-4142 — Authorization for Release of Medical Records (for private medical records)
• VA Form 21-0781 — Statement in Support of Claim (if documenting in-service stressors for related conditions)

What to Expect at Your C&P Exam for IHD

If the VA schedules a Compensation and Pension (C&P) exam for your IHD claim, it will typically be conducted by a VA cardiologist or an internal medicine physician using the Heart DBQ (Disability Benefits Questionnaire). The examiner will review your records and assess the current severity of your IHD.

Read the complete guide to VA C&P exams before your appointment. Key preparation tips specific to IHD:

• Bring all cardiac records: Bring copies of your stress test, echocardiogram, and cardiac catheterization results even if you think the VA has them. Examiners sometimes work from incomplete files.
• Document your worst functional day: The VA rates your condition based on its typical severity, not your best day. Describe how far you can walk before chest pain or shortness of breath begins. If climbing one flight of stairs causes angina, say that specifically.
• Report all medications: List all cardiac medications you take. The presence of ongoing medications supports at minimum a 30% rating (continuous medication criterion under DC 7005).
• Do not minimize symptoms: Veterans commonly underreport at C&P exams. If you have had stent placements, bypass surgery, or hospitalizations for heart failure, make sure the examiner has all of this information.

The examiner will complete the DBQ by documenting your MET capacity, ejection fraction, symptom frequency, and functional limitations. After the exam, you can request a copy of the DBQ through MyHealtheVet to verify the examiner documented your symptoms accurately before the rating decision is made.

Do You Need a Nexus Letter for IHD?

For Vietnam veterans with confirmed Agent Orange exposure, you do not need a nexus letter. The presumptive framework under 38 CFR § 3.309(e) establishes service connection automatically — the law presumes the herbicide caused your IHD. What you need is:

1. Evidence of service in a qualifying location (DD-214)
2. A current diagnosis of ischemic heart disease (from any doctor)

The VA must grant service connection when both elements are present. No nexus letter, no medical opinion linking the exposure to the disease, and no in-service documentation of heart symptoms are required.

Common Denials and How to Beat Them

Despite the strong presumptive framework, IHD claims are sometimes denied. Here are the most common reasons and how to respond:

1. "No Diagnosis of IHD" — Inadequate Medical Evidence

The most common denial for IHD is a lack of a formal diagnosis. The VA needs a diagnosis from a physician — not just symptoms. If denied for this reason, obtain a cardiology consultation that specifically diagnoses ischemic heart disease, coronary artery disease, or angina pectoris. A coronary calcium score CT (a simple, non-invasive test) can confirm subclinical coronary artery disease in veterans who have never had a formal cardiac workup.

2. "No Evidence of Vietnam Service" — Records Issues

Some veterans' DD-214s do not clearly indicate Vietnam service, particularly for sailors who served on ships offshore. For Blue Water Navy veterans, request ship deck logs from the National Archives to document the ship's location in Vietnamese waters. The VA is required to assist in obtaining these records under the duty-to-assist provisions of 38 CFR § 3.159.

3. Underrating — METs Not Documented Properly

Many veterans are rated at 10% when they should be at 30% or higher because their stress test reports don't clearly document the MET level at symptom onset. If your stress test report says you were symptomatic but doesn't state the METs, work with your cardiologist to get an addendum added to the report documenting this value. Then file a supplemental claim with the updated record.

4. "Another Cause" — VA Attributes IHD to Non-Service Factors

For AO-presumptive veterans, this denial is legally invalid — the law does not allow the VA to deny on the grounds that other risk factors (smoking, diet, family history) "caused" the IHD. If denied on this basis, appeal immediately. The presumptive framework means Agent Orange is presumed to have caused or contributed to the IHD regardless of other risk factors.

If your claim has been denied, analyze your denial letter to identify the specific reason and the appropriate response strategy.

How to File Your IHD Claim: Next Steps

Here is a concrete action plan for filing your ischemic heart disease VA disability claim:

1. Get a cardiac evaluation if you haven't already. See a cardiologist for an echocardiogram and stress test. Make sure the stress test report documents the MET level at symptom onset.
2. Gather your service records. Locate your DD-214 and verify it shows Vietnam (or other qualifying) service. If records are incomplete, request them from the National Personnel Records Center (NPRC) using Standard Form 180.
3. Use the Intent to File (VA Form 21-0966) to establish an effective date now, before your full application is ready. This protects your back pay entitlement from the date you file the Intent to File.
4. File VA Form 21-526EZ online at VA.gov, by mail, or in person at your regional office. Include your DD-214 and all medical records as attachments.
5. Use the VA rating estimator to calculate how your IHD rating will combine with other existing service-connected conditions.
6. Consider secondary conditions. IHD can cause secondary conditions that may also be ratable: heart failure, arrhythmias, peripheral vascular disease, and depression are all potentially connected. File for these simultaneously.

Check current 2026 VA disability pay rates to understand exactly what your IHD rating will pay at each percentage level. For personalized help navigating your claim, get free help from a VA claims specialist.