CPT code 21210 covers surgical placement of bone graft material to the face to correct cosmetic deformities of the nose, maxilla (upper jaw), and malar (cheek) bony structures caused by injury or disease. This code is relevant for reconstructive and aesthetic facial surgery and is commonly used in contexts where restoration of contour and structural support is required after trauma, oncologic resection, or congenital defects. Nationally, accurate coding for facial bone grafting affects claims processing, clinical documentation, and coverage determinations for reconstructive facial procedures.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical intent of the code, payer coverage context, common billing modifiers (list provided separately), and typical sites of service. The publication includes benchmarks where available, coding and documentation considerations, and policy updates that influence coverage and prior authorization practices. The content is intended to help coding and billing staff, clinical leaders, and revenue cycle teams understand the clinical scope and administrative considerations associated with CPT code 21210 on a national level.