Summary & Overview

CPT 62120: Cranial Vault Repair and Skull Defect Reconstruction

CPT code 62120 denotes a neurosurgical cranial vault repair procedure in which herniated brain tissue is repositioned and the cranial defect is corrected or reconstructed. This code is used for complex skull repairs following trauma, congenital defects, tumor resection, or prior surgical complications and is clinically significant for institutions managing neurotrauma and cranial reconstructive cases. Nationally, accurate use of this code affects hospital surgical case mix, quality measurement, and reimbursement for high-acuity neurosurgical care.

Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides a centralized reference for coding teams, revenue cycle staff, and clinical leads on expected coding context, typical sites of service, and common clinical indications. Readers will find concise benchmarks where available, summaries of relevant policy or coverage considerations, and clinical context that clarifies when CPT code 62120 applies. The content is intended to support consistent coding, billing oversight, and operational planning for hospitals and ambulatory surgery centers that manage cranial reconstructive surgeries. Data not available in the input for payer-specific rates, associated taxonomies, and ICD-10 diagnosis mappings are noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 62120cranial vault repairneurosurgeryskull reconstructionoperative codingsurgical procedurehospital surgeryambulatory surgery centerreconstructive neurosurgery

Billing Code Overview

CPT code 62120 describes a cranial vault repair with correction of skull defect or deformity, a neurosurgical procedure in which the surgeon repairs brain tissue that has herniated through a defect in the cranial vault and reconstructs the bony skull defect.

Service type: Neurosurgical cranial reconstructive procedure

Typical site of service: Inpatient or outpatient hospital operating room or ambulatory surgery center, depending on clinical complexity and patient condition.

Clinical & Coding Specifications

Clinical Context

A representative patient is a 42‑year‑old male who presents with a congenital cranial vault defect (e.g., cranial meningocele with calvarial defect) that allows a portion of dura or brain tissue to herniate through the skull. The patient reports persistent headache, focal neurologic symptoms, and a visible skull deformity. Preoperative evaluation includes neurological exam, head CT and MRI to delineate bony defect and intracranial contents, and surgical planning with neurosurgery and craniofacial/plastic surgery as needed. The operative workflow includes general endotracheal anesthesia, exposure of the cranial defect, reduction of the herniated intracranial contents, repair of dural and brain tissue if required, and reconstruction of the skull defect using autologous bone, allograft, or synthetic cranioplasty material. Postoperative care occurs in a monitored postoperative or intensive care unit with neurologic checks, imaging as indicated, and discharge planning with follow‑up for wound and neurologic recovery. Typical site of service is an inpatient hospital operating room; ambulatory surgical center may be appropriate for limited reconstructions in select cases. Service type: open cranial vault repair/cranioplasty for repair of skull defect and correction of cranial deformity.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	When intraoperative complexity or time substantially exceeds typical for the procedure due to extensive repair or reconstruction.
`23`	Unusual anesthesia	When a procedure that normally requires general anesthesia is performed under local/other unusual anesthesia technique.
`26`	Professional component	When billing only the professional interpretation component of a separately reportable diagnostic service (e.g., intraoperative imaging read).
`50`	Bilateral procedure	When identical procedures are performed on both sides of the cranium in a single operative session.
`51`	Multiple procedures	When this procedure is performed in the same session with other distinct surgical procedures; indicates multiple surgery discounting rules.
`52`	Reduced services	When the full procedure is partially reduced or not completed as planned.
`53`	Discontinued procedure	When the procedure is started but halted due to emergency or patient safety concerns prior to completion.
`62`	Two surgeons	When two surgeons of different specialties (e.g., neurosurgeon and craniofacial plastic surgeon) work together as primary surgeons.
`63`	Procedure performed on infants less than 4 kg	When applicable for neonates/very small infants requiring cranial repair.
`78`	Return to operating room for related procedure during postoperative period	When a patient requires a repeat operation for a complication related to the initial cranial repair.
`79`	Unrelated procedure during postoperative period	When an unrelated procedure is performed during the global period.
`80`	Assistant surgeon	When a surgical assistant performs a portion of the operation.
`81`	Minimum assistant surgeon	When only minimal assistant participation is provided.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery	When an advanced practice provider serves as the surgical assistant.

Taxonomy Code	Specialty	Notes
207P00000X	Neurological Surgery	Primary specialty performing cranial vault repair and intracranial repair.
2080P0208X	Plastic Surgery	Craniofacial reconstruction and calvarial contouring, often co‑managed with neurosurgery.
2084P0800X	Pediatric Surgery	Involvement when repair is performed on infants or children with cranial defects.
208500000X	General Surgery	Occasionally involved in multidisciplinary cranial reconstructions depending on institution.
363L00000X	Anesthesiology	Provides perioperative anesthesia care for complex cranial procedures.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
Data not available in the input.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`61582`	Craniectomy or craniotomy for cranial vault defect repair, with meningocele/encephalocele repair when performed	Alternate cranial procedures that may be used for decompression or exposure; overlaps with techniques for defect repair.
`62160`	Craniectomy or craniotomy for repair of meningocele or encephalocele, intracranial repair of dura and brain tissue	Codes for intracranial repair of herniated tissue that often accompany skull defect repair; may be reported when intradural work is required.
`62118`	Repair of skull defect; cranioplasty, with use of material (e.g., methyl methacrylate)	Codes for cranioplasty materials and reconstruction techniques that are performed to correct skull deformity associated with the defect.
`21125`	Reconstruction, reconstruction of cranial or facial bone defect with bone graft	Used when autologous bone grafting is harvested and used to reconstruct calvarial defects during the procedure.
`77012`	CT guidance for stereotactic procedures and localization	Diagnostic or intraoperative imaging performed to localize defect margins or confirm implant position during reconstruction.
`99231`	Subsequent hospital care, per day	Postoperative inpatient evaluation and management services typically reported in the global period for daily hospital care following major cranial surgery.