VA Coronary Artery Disease Claims: DC 7005 and Ischemic Heart Disease

What the VA Counts as Coronary Artery Disease (Ischemic Heart Disease)

Coronary artery disease, ischemic heart disease, and arteriosclerotic heart disease all describe the same underlying problem: the arteries that feed the heart muscle narrow and harden, so the heart does not get enough oxygen-rich blood. The VA rates this condition under 38 CFR 4.104, diagnostic code 7005, titled "Arteriosclerotic heart disease (coronary artery disease)." The VA's public health materials state plainly that ischemic heart disease is "also known as coronary artery disease or hardening of the arteries."

How the MET Rating Works (and Why Ejection Fraction Is No Longer a Rating Row)

The most important thing to understand about a DC 7005 rating is that it runs on METs, not on symptoms and not on ejection fraction. A MET (metabolic equivalent) is a unit of physical workload. Under 38 CFR 4.104, Note 2, one MET is defined as the energy cost of standing quietly at rest (an oxygen uptake of 3.5 milliliters per kilogram of body weight per minute). The rating asks a single question: at what level of physical exertion (measured in METs) do heart failure symptoms appear?

Note 3 to the formula defines what counts as a heart failure symptom for rating purposes. The list includes, but is not limited to, breathlessness, fatigue, angina (chest pain), dizziness, arrhythmia, palpitations, or syncope (fainting). The lower the MET workload that triggers any of these, the higher the rating.

DC 7005 Rating Levels

Diagnostic code 7005 has no rating rows of its own. It is rated under the General Rating Formula for Diseases of the Heart at 38 CFR 4.104. The four levels below are reproduced verbatim from the current formula. Each level is reached by the MET workload that produces heart failure symptoms, and the 30 percent and 10 percent levels add an alternate route that does not depend on a measured MET number.

There are three ways to reach a single level. The 30 percent level can be earned either by a measured workload of 5.1 to 7.0 METs OR by imaging that confirms cardiac hypertrophy or dilatation, even if the MET workload is higher. The 10 percent level can be earned either by a workload of 7.1 to 10.0 METs OR simply by the fact that continuous medication is required to control the heart disease. This medication route at 10 percent is the floor for a veteran whose CAD is well controlled on daily heart medication.

The table below summarizes the two non-MET routes that often get overlooked.

Notes from the regulation:

• Note 1: Cor pulmonale, a form of secondary heart disease, is evaluated as part of the pulmonary (lung) condition that causes it, not separately under the heart formula.
• Note 2: One MET is the energy cost of standing quietly at rest. When a laboratory exercise test cannot be done for medical reasons, a medical examiner may estimate the MET level at which symptoms develop, supported by specific examples such as slow stair climbing or shoveling snow.
• Note 3: Heart failure symptoms include, but are not limited to, breathlessness, fatigue, angina, dizziness, arrhythmia, palpitations, or syncope.
• The 7005 Note: If non-service-connected arteriosclerotic heart disease is superimposed on service-connected valvular or other non-arteriosclerotic heart disease, the rater requests a medical opinion as to which condition is causing the current signs and symptoms.

How Coronary Artery Disease (Ischemic Heart Disease) Gets Service Connected

Agent Orange presumptive (the dominant path)

Ischemic heart disease, which the VA defines to include coronary artery disease, is an Agent Orange / herbicide presumptive condition under 38 CFR 3.309(e). The official VA Public Health page describes ischemic heart disease as "also known as coronary artery disease" and states that veterans who develop it after qualifying herbicide exposure "do not have to prove a connection between their disease and service." Ischemic heart disease was added to the presumptive list in 2010.

When this presumption applies, two of the three usual elements (an in-service event and a medical nexus) are presumed. The veteran needs a current ischemic heart disease diagnosis and qualifying herbicide exposure (for example, service in Vietnam between January 1962 and May 1975, the Korean DMZ, Johnston Atoll, and other locations and dates catalogued in the VA's adjudication manual, M21-1). See the Agent Orange presumptive page. The reach of this presumption is the main reason the measured nexus benefit for CAD is comparatively small (see the evidence section below): for many exposed veterans, no nexus letter is needed at all.

Direct service connection

When the presumption does not apply, direct service connection requires three elements: a current CAD diagnosis, an in-service event or risk exposure, and a medical nexus opinion linking the two. The Board's published decisions show that the absence of that nexus is the single biggest reason direct CAD claims are denied. Of 4,701 classified service-connection denials for DC 7005 in published BVA decisions, 2,746 were dispositively for lack of a nexus, 1,046 for no current diagnosis, and 909 for no qualifying in-service event (published BVA decisions, denial-reason dataset).

Secondary to diabetes (38 CFR 3.310)

Diabetes damages blood vessels over time and is a leading cause of coronary artery disease. CAD claimed as secondary to service-connected diabetes is the highest-volume secondary pathway for this code in the Board's data: approximately 28 percent of CAD-secondary-to-diabetes appeals were granted (published BVA decisions, n = 241). A secondary claim under 38 CFR 3.310 turns on a medical opinion connecting the service-connected diabetes to the heart disease. See the diabetes claims guide.

Secondary to hypertension (38 CFR 3.310)

Long-standing high blood pressure forces the heart to work harder and accelerates arterial disease, so CAD is also frequently claimed secondary to service-connected hypertension. In the Board's data, approximately 44 percent of CAD-secondary-to-hypertension appeals were granted (published BVA decisions, n = 181). Because hypertension itself is now separately presumptive under the PACT Act for Agent Orange veterans, this two-step path (presumptive hypertension, then CAD secondary to it) appears in published decisions. See the hypertension claims guide.

Secondary to sleep apnea (38 CFR 3.310)

Obstructive sleep apnea strains the cardiovascular system through repeated drops in blood oxygen. CAD claimed secondary to service-connected sleep apnea is lower volume but carried the best grant rate of the major secondary pathways for this code: approximately 53 percent of those appeals were granted (published BVA decisions, n = 23). A medical nexus opinion is the central document for any of these secondary theories.

Common Secondary Conditions

Coronary artery disease sits in the middle of a chain. It is caused by some conditions and it causes others. The Board's secondary-claim data show both directions clearly, and each rate below is a grant rate paired with its sample size from published BVA decisions.

Conditions that cause CAD (CAD claimed secondary TO them)

Each bar is the published BVA grant rate for CAD claimed secondary to that condition, with the number of decisions below it:

Conditions that CAD causes (claimed secondary to CAD)

Each bar is the published BVA grant rate for that condition claimed secondary to CAD:

Pyramiding and Rating Separately

The VA's pyramiding rules prevent paying twice for the same symptoms. For heart disease, the rule that surprises many veterans is that hypertension is rated separately from heart disease. Note 3 to 38 CFR 4.104 directs that hypertension (DC 7101) be evaluated separately from hypertensive heart disease and from other types of heart disease, including ischemic heart disease such as CAD. A veteran can hold a percentage for CAD under 7005 and a separate percentage for hypertension under 7101 at the same time.

Within heart disease itself, however, the same symptoms cannot drive two ratings. Coronary artery disease and another heart condition are not stacked on the same MET workload. The 7005 Note also addresses an overlap: if non-service-connected arteriosclerotic heart disease is superimposed on a service-connected non-arteriosclerotic heart condition, the rater requests a medical opinion to sort out which condition is producing the current symptoms.

One more separate-rating point: erectile dysfunction that flows from CAD is its own ratable condition under code 7522 and adds special monthly compensation under SMC-K. That is not pyramiding, because ED and the heart disease are distinct disabilities with distinct effects.

Evidence That Wins These Claims

The Board's published decisions show which kinds of evidence correlate with grants for DC 7005. Each figure below is a grant rate, the share of decisions citing that evidence type that were granted, paired with its sample size.

• A nexus letter (private medical opinion): the top-performing evidence type for this code. In BVA coronary artery disease decisions that cited a nexus letter, approximately 50 percent were granted (published BVA decisions, n = 1,404). That compares with approximately 28 percent for decisions resting on service treatment records alone (published BVA decisions). See nexus letters.
• Medical literature: approximately 39 percent of decisions citing supporting medical literature were granted (published BVA decisions).
• A private medical opinion (broader than a formal nexus letter): approximately 34 percent granted (published BVA decisions).
• Buddy and lay statements: approximately 32 percent granted (published BVA decisions).
• The VA examination: approximately 31 percent granted (published BVA decisions).
• Service treatment records: approximately 28 percent granted (published BVA decisions).

The nexus-letter benefit is real but comparatively modest for this code, and the reason is the presumption. The gap below is the smallest among the conditions in this guide series, which the data attributes to the Agent Orange ischemic heart disease presumption: many CAD grants run through the presumption and need no nexus at all.

Common Mistakes

Diagnostic Tests and the DBQ

The primary exam document for DC 7005 is the Ischemic Heart Disease Disability Benefits Questionnaire (VA Form 21-0960A-1), which covers coronary artery disease and the residuals of a heart attack. The tests and measurements that appear on these exams, and what each one establishes, are catalogued below. See the DBQ guide.

• Exercise stress test (treadmill test): measures the MET workload at which heart failure symptoms (breathlessness, fatigue, angina, dizziness, arrhythmia, palpitations, or syncope) develop. This is the central rating metric under 38 CFR 4.104.
• Examiner-estimated METs: when an exercise test cannot be done for medical reasons, Note 2 allows the examiner to estimate the MET level using specific activity examples such as slow stair climbing or shoveling snow.
• Echocardiogram (or MUGA scan or cardiac MRI): documents cardiac hypertrophy or dilatation, the alternate route to the 30 percent level.
• Cardiac catheterization / coronary angiography: confirms the coronary artery disease diagnosis and the degree of arterial blockage.
• Electrocardiogram (EKG) and Holter monitoring: detect ischemia, prior heart attack, and arrhythmia.
• Ejection fraction (LVEF): still routinely reported to describe severity, even though it is no longer a stated rating-row threshold in the current formula.
• Lipid panel, cardiac biomarkers, and medication records: support the diagnosis and document continuous cardiac medication, the basis for the 10 percent medication route.

Frequently Asked Questions