CPT code 27324 designates an open biopsy of deep soft tissue in the thigh or knee, where tissue from below the fascia or within muscle is removed and submitted for laboratory analysis. This code captures a diagnostic surgical procedure used to evaluate suspicious masses or lesions in deep lower-extremity soft tissues. It matters nationally because timely and accurate tissue diagnosis can affect oncologic staging, infection management, and surgical planning, and because surgical biopsy services drive hospital and ambulatory surgery center utilization.

Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for 27324, typical sites of service, and common billing considerations. The full analysis presents benchmark payment levels, payer-specific coverage highlights where available, and policy or coding guidance updates that affect billing and claims adjudication. The material also outlines documentation elements associated with surgical deep-tissue biopsies and situates 27324 among related procedural codes for musculoskeletal and soft-tissue diagnostic services.

Data not available in the input is noted where payer-specific rates, associated taxonomies, ICD-10 diagnoses, and related codes would normally appear.