CPT code 77048 denotes a diagnostic breast MRI of one breast that generates three-dimensional images, performed with and without intravenous contrast and with optional real-time computer-aided detection (CAD). This imaging code is important nationally for advanced breast cancer detection, problem-solving when mammography or ultrasound is inconclusive, and for preoperative planning in selected patients. Breast MRI utilization affects radiology workflows, imaging center capacity, and payer coverage policies given its higher resource intensity compared with standard mammography.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of typical coverage contexts, utilization benchmarks, and relevant clinical indications associated with the code. The publication outlines payment considerations, common billing modifiers and claim components, and how this service aligns with diagnostic imaging pathways for breast disease.

This report provides clinicians, billing professionals, and policy analysts with: national context for CPT code 77048; typical sites of service and service type; guidance on documentation elements that support medical necessity; and a summary of payer coverage patterns and reimbursement framing. Data not available in the input is noted where applicable.