CPT code 25900 identifies a surgical amputation of the forearm with closure of muscular and skin layers. This definitive operative code captures removal of the forearm at any point on the radius and ulna and is used in cases requiring limb resection for trauma, infection, ischemia, malignancy, or other irreversible pathology. Nationally, accurate use of this code matters for clinical documentation, surgical quality measurement, inpatient utilization tracking, and appropriate payment for high-acuity operative care.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context and service setting for CPT code 25900, plus discussion of common billing modifiers and payer considerations used with major carriers. The publication summarizes expected sites of service, typical documentation elements that support procedural reporting, and common billing patterns associated with major payers. Where input data are incomplete, the report identifies missing fields and notes that certain payer-specific coverage details or associated diagnosis codes are not provided in the input.