Does Medicare cover defibrillators?

What does Medicare cover for defibrillators?

Medicare may cover an implantable cardioverter defibrillator (ICD), an electronic device designed to diagnose and treat life-threatening heart rhythm problems called ventricular tachyarrhythmias. Part A covers the surgery to implant a defibrillator in a hospital inpatient setting, and Part B covers the surgery if you get it in a hospital outpatient setting.

Medicare also covers automatic external defibrillators under the Part B durable medical equipment (DME) benefit. These devices can monitor heart rhythms, detect abnormal rhythms and deliver a shock to the heart when appropriate, without any decision by the user. They include wearable defibrillators and non-wearable units.

Who qualifies for an implantable defibrillator?

Medicare.gov says Medicare may cover an ICD if you've been diagnosed with heart failure. CMS's national coverage determination for ICDs covers them for these groups, each with its own conditions:

• A personal history of sustained ventricular tachyarrhythmia (VT) or cardiac arrest due to ventricular fibrillation (VF) that isn't due to a transient or reversible cause; an episode of sustained VT also must not be associated with an acute heart attack
• A prior heart attack (myocardial infarction) and a measured left ventricular ejection fraction (LVEF) of 30% or less, without New York Heart Association (NYHA) Class IV heart failure
• Severe ischemic dilated cardiomyopathy, with no history of sustained VT or cardiac arrest due to VF, NYHA Class II or III heart failure, and an LVEF of 35% or less
• Severe non-ischemic dilated cardiomyopathy, with no history of sustained VT or cardiac arrest due to VF, NYHA Class II or III heart failure, an LVEF of 35% or less, and at least 3 months of optimal medical therapy
• Documented familial or genetic disorders with a high risk of life-threatening tachyarrhythmias, such as long QT syndrome or hypertrophic cardiomyopathy
• An existing ICD that needs replacing because of the end of battery life, the elective replacement indicator, or a device or lead malfunction

What other conditions apply to an ICD?

For the second through fifth groups, you must have a formal shared decision-making visit with a physician or qualified non-physician practitioner, using an evidence-based decision tool on ICDs, before your first ICD implant. Some groups also must not have had a coronary artery bypass graft (CABG) or angioplasty or stenting (PCI) within the past 3 months, a heart attack within the past 40 days, or findings that make them a candidate for coronary revascularization. The 3-month and 40-day waiting periods don't apply to ICD replacements or to people who meet the coverage rules for both a pacemaker and an ICD and get them in one procedure.

For every covered group, you must be clinically stable, your LVEF must be measured by echocardiography, nuclear imaging, cardiac MRI or catheter angiography, and you must not have significant irreversible brain damage, a disease other than heart disease associated with a likelihood of survival of less than 1 year, or a supraventricular tachycardia such as atrial fibrillation with a poorly controlled ventricular rate. Other uses of ICDs may be covered in certain approved device trials (Category B Investigational Device Exemption trials), and coverage as a bridge to a heart transplant is decided by local Medicare contractors.

Does Medicare cover wearable or home defibrillators?

Yes, for people at high risk of sudden cardiac death, and the treating practitioner is expected to be experienced in managing people at risk of sudden cardiac death. A non-wearable home defibrillator is covered if you have one of the qualifying heart conditions in the equipment contractors' coverage policy and implant surgery is medically contraindicated, or if a previously implanted defibrillator has to be removed. Medicare denies defibrillators for other uses as not reasonable and necessary.

Under the coverage policy Medicare's equipment contractors use, a wearable defibrillator is covered if you meet one of these criteria:

• A documented episode of ventricular fibrillation, or a sustained ventricular tachyarrhythmia lasting 30 seconds or longer, that isn't due to a transient or reversible cause and didn't occur during the first 48 hours of an acute heart attack
• A familial or inherited condition with a high risk of life-threatening ventricular tachyarrhythmia, such as long QT syndrome or hypertrophic cardiomyopathy
• A documented prior heart attack or dilated cardiomyopathy, and a measured left ventricular ejection fraction of 35% or less
• A previously implanted defibrillator that now has to be removed

What do I pay for a defibrillator?

If you get ICD surgery in a hospital outpatient setting, the Part B deductible ($283 in 2026) applies, you pay 20% of the Medicare-approved amount for your doctor's services, and you also pay the hospital a copayment that in most cases can't be more than the Part A hospital stay deductible.

If you're admitted as a hospital inpatient, you pay the Part A deductible ($1,736 in 2026) for each benefit period and then $0 a day for days 1 to 60. If you also have Part B, it generally covers 80% of the Medicare-approved amount for doctors' services you get while you're in the hospital. For a covered wearable or home defibrillator, you pay 20% of the Medicare-approved amount after the Part B deductible, if your supplier accepts assignment.

Does Medicare Advantage or Medigap change defibrillator coverage?

Medicare Advantage plans must cover all medically necessary services that Original Medicare covers, but costs vary by plan, you may need to use the plan's network, and you may need the plan's approval (prior authorization) first; in a Medicare Advantage plan you may be charged copayments during the first 60 days of a hospital stay. Medigap plans help cover your share of costs for services that Original Medicare covers, like copayments, coinsurance and deductibles. See how Medicare covers cardiac rehab.