CPT code 33274 covers percutaneous insertion or replacement of a permanent leadless pacemaker placed in the right ventricle through a femoral venous approach. The code consolidates procedural components, including imaging guidance and device testing/programming performed during the same encounter, which affects billing bundles and claim edits. Leadless pacemaker therapy matters nationally because it represents a growing alternative to transvenous systems for selected patients, with implications for utilization, device costs, and post-procedure follow-up care.

Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The analysis outlines coverage posture, common claim adjudication issues, and policy language that influences prior authorization and medical necessity assessment for leadless pacemaker implantation.

Readers will find a synthesis of clinical context for the procedure, how payers typically treat bundled imaging and programming services, common modifiers and claim scenarios that arise in practice, and benchmark considerations for site-of-service and utilization. The report also highlights areas where policy updates or coding clarification can affect reimbursement and administrative workflows. Data not available in the input is noted where applicable.