CPT code 93596 denotes diagnostic right and left heart catheterization in patients born with congenital heart defects who have normal native connections. The procedure includes vascular catheter navigation to the heart, catheter placement in right and left chambers, and acquisition of blood gases and hemodynamic measurements. This code is relevant nationally for hospitals and cardiology practices that manage congenital heart disease and perform invasive diagnostic evaluations.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for the code, typical service settings, and the operational role of the procedure in congenital cardiac care. The publication covers benchmarking and utilization context where available, highlights common billing modifiers used with invasive cardiac catheterization, and outlines payer coverage considerations at a national level.

The content is intended to help billing managers, cardiology program directors, and policy analysts understand the clinical scope of CPT code 93596, typical sites of service, and what to expect in payer interactions and documentation needs. Data not available in the input will be noted as such in detailed sections.