Summary & Overview
CPT 61557: Bilateral Frontal Cranial Vault Remodeling for Craniosynostosis
CPT code 61557 represents bilateral frontal cranial vault remodeling performed through an ear-to-ear incision to correct craniosynostosis by creating and repositioning bilateral frontal bone flaps. This procedure is a major neurosurgical intervention aimed at restoring normal skull shape, preventing or relieving raised intracranial pressure, and addressing the functional and cosmetic consequences of prematurely fused cranial sutures. Nationally, it is an important code for pediatric neurosurgery and craniofacial programs, with implications for inpatient surgical resource use, length of stay, and multidisciplinary care coordination. Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will learn clinical context for the procedure, typical sites of service, common billing modifiers, and which payers commonly cover the service. The publication also summarizes coding-related considerations, utilization benchmarks where available, and policy updates or prior authorization trends affecting major commercial and federal payers. Data not available in the input will be noted where applicable.
Billing Code Overview
CPT code 61557 describes a cranial vault remodeling procedure in which the surgeon creates a bilateral frontal bone flap via an ear-to-ear incision to reshape the skull and correct prematurely fused cranial sutures (craniosynostosis). This is a corrective neurosurgical procedure focused on restoring normal cranial anatomy and relieving abnormal cranial pressure or deformity.
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Service type: Corrective cranial vault remodeling surgery for craniosynostosis
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Typical site of service: Inpatient hospital operating room (neurosurgery/plastic surgery service)
Clinical & Coding Specifications
Clinical Context
A typical patient is an infant or young child diagnosed with single or multiple prematurely fused cranial sutures (craniosynostosis), frequently presenting with abnormal head shape, increased intracranial pressure signs, or developmental concerns. The clinical workflow begins with pediatrician or craniofacial surgeon evaluation, skull imaging (CT with 3D reconstruction), and multidisciplinary review by neurosurgery and craniofacial/plastic surgery. Preoperative planning includes anesthesia assessment, blood product availability, and family counseling. On the day of surgery in an inpatient operating room at a tertiary pediatric hospital, the surgical team performs a coronal (ear-to-ear) incision, creates a bilateral frontal bone flap, reshapes the frontal bones and orbital rims to correct deformity, and secures the reconstruction. Postoperative care involves pediatric intensive care monitoring or step-down, pain control, neurologic checks, wound care, and scheduled follow-up for developmental and craniofacial assessment.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | (Placeholder) Not a standard CMS modifier for professional use in claims; retained in list | Data not applicable for standard use |
11 |