Medicare Coverage for Atrial Fibrillation: Diagnosis, Treatment, and Stroke Prevention

Atrial fibrillation (AFib) is the most common heart arrhythmia -- affecting more than 5 million Americans, the majority of whom are Medicare beneficiaries. AFib significantly increases stroke risk and requires ongoing management. Medicare covers a comprehensive range of AFib diagnostic and treatment services.

Electrocardiogram (EKG/ECG): Covered under Part B -- the standard first-line test for detecting AFib. 20% coinsurance after the Part B deductible.

Holter monitor: A portable EKG worn for 24-48 hours to detect intermittent AFib. Covered under Part B.

Extended cardiac monitoring (event monitor, patch monitor): For patients with infrequent symptoms, longer-term monitoring devices (worn for 2-4 weeks) are covered under Part B.

Implantable cardiac monitor (loop recorder): For patients with very infrequent episodes, an implantable monitor that continuously records heart rhythm for up to 3 years. Covered under Part B when medically indicated.

Echocardiogram: Ultrasound of the heart to assess cardiac structure and function -- covered under Part B.

Rate control medications slow the heart rate during AFib without necessarily restoring normal rhythm:

• Beta-blockers (metoprolol, atenolol, carvedilol) -- generic, low cost
• Calcium channel blockers (diltiazem, verapamil) -- generic, low cost
• Digoxin -- generic, low cost

All covered under Part D at standard formulary tiers.

Rhythm control medications attempt to restore and maintain normal sinus rhythm:

• Flecainide -- generic available
• Propafenone -- generic available
• Amiodarone -- generic available
• Sotalol -- generic available
• Dofetilide (Tikosyn) -- brand only, higher tier
• Dronedarone (Multaq) -- brand only, higher tier

Covered under Part D; tier and cost-sharing vary by plan.

AFib increases stroke risk 5-fold. Anticoagulation is the cornerstone of stroke prevention:

Warfarin (Coumadin): Generic available -- very low cost. Requires regular INR monitoring (covered under Part B).

Direct oral anticoagulants (DOACs):

• Apixaban (Eliquis) -- brand only, specialty tier
• Rivaroxaban (Xarelto) -- brand only, specialty tier
• Dabigatran (Pradaxa) -- brand only, specialty tier
• Edoxaban (Savaysa) -- brand only, specialty tier

DOACs are covered under Part D but at higher tiers -- cost-sharing can be significant. Compare plans carefully if you take a DOAC.

Electrical cardioversion -- a procedure that delivers a controlled electric shock to restore normal heart rhythm -- is covered under Part B as an outpatient procedure. 20% coinsurance after the Part B deductible.

Catheter ablation is a minimally invasive procedure that destroys the abnormal electrical pathways causing AFib. It is performed in a hospital electrophysiology lab and covered under Part B (outpatient) or Part A (inpatient) depending on how it is performed.

Cost: 20% coinsurance after the Part B deductible for outpatient ablation. Medigap Plan G covers this 20%.

For patients who cannot tolerate anticoagulation, the Watchman device (left atrial appendage closure) is an alternative stroke prevention strategy. Medicare covers LAAC procedures for qualifying patients. Coverage requires meeting specific clinical criteria.

We do not offer every plan available in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options.