CPT code 37256 represents angioplasty of a complex iliac artery lesion (including complete occlusions) and covers all access, catheterization, lesion crossing, and imaging guidance required to complete the procedure. This code applies to interventions in the common, internal, or external iliac arteries and may be performed percutaneously or via an open approach. The code is nationally relevant because peripheral arterial disease and iliac occlusive disease contribute significantly to morbidity and health care utilization; accurate coding informs resource allocation, quality measurement, and procedural monitoring.

Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical and coding summary, typical sites of service, and the types of benchmarks and policy considerations generally associated with complex peripheral vascular interventions. The publication outlines what to expect for coverage and payment frameworks at a national level, highlights clinical context for use of the code, and identifies where additional data would normally be consulted (benchmarks, modifiers, associated diagnoses).

This summary is intended for billing professionals, vascular specialists, and policy analysts seeking a focused, national-level overview of CPT code 37256, its clinical scope, and its relevance to payer coverage and procedural classification.