Coronal craniosynostosis, unilateral

This code signifies a congenital anomaly where one of the coronal sutures of the skull prematurely fuses, leading to an abnormal head shape. This unilateral fusion restricts growth on the affected side, often resulting in a flattened forehead and orbital asymmetry.

Apply this code when documentation specifies unilateral coronal craniosynostosis. This diagnosis is typically made in infancy based on physical examination and confirmed by imaging studies such as CT scans. Use when surgical correction (e.g., craniotomy, cranial vault remodeling) is planned or performed for this specific condition.

• Differentiate from bilateral coronal craniosynostosis, which has a distinct code.
• Ensure documentation clearly specifies "unilateral" to support this code.
• Do not confuse with other types of craniosynostosis (e.g., sagittal, metopic) which have different codes.