CPT code 73521 is used for diagnostic radiography of both hips, capturing two projections of the left and right hips to assess fractures, swelling, degenerative changes, or other causes of hip pain; the pelvis may be included when performed. This imaging code is nationally relevant because hip radiographs are fundamental to emergency, orthopedic, and primary care workflows for acute injury and chronic hip complaints, influencing diagnostic pathways and subsequent care decisions.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context and typical site-of-service usage, an outline of common billing modifiers, and the payer landscape relevant to this radiographic service. The publication summarizes typical utilization patterns, common billing considerations, and related coding references to help billing staff, practice managers, and policy analysts understand how this service is classified and handled across major payers.

The report does not provide treatment recommendations; it focuses on code definition, clinical relevance, payer coverage scope, and operational considerations for billing and revenue cycle teams. Data not available in the input are noted where applicable.