Summary & Overview
CPT 22846: Anterior Spinal Instrumentation, 4–7 Segments
CPT code 22846 represents anterior placement of spinal instrumentation spanning four to seven vertebral segments for correction of spinal deformity during procedures such as spinal fusion or arthrodesis. Nationally, this code captures complex spine surgeries that require multilevel anterior stabilization and are associated with higher resource use, surgical complexity, and perioperative care needs. Payers commonly involved in coverage decisions for this service include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise overview of the clinical intent and service setting for CPT code 22846, alongside benchmark indicators and policy context relevant to payers and hospitals. The publication outlines reimbursement benchmarks, coding and billing considerations, common modifiers, and clinical scenarios where anterior multilevel instrumentation is used. It also summarizes implications for utilization management, documentation expectations, and payer policy trends that affect authorization and claims processing.
This analysis is written for a national audience and is intended to inform clinicians, coding professionals, compliance teams, and payer policy staff about the code’s clinical scope, typical sites of service, and the payer landscape for complex anterior spinal instrumentation procedures.
Billing Code Overview
CPT code 22846 describes placement of spinal instrumentation from the anterior approach across four to seven vertebral segments to correct a spinal deformity during a spinal procedure such as a spinal fusion or arthrodesis. This procedure involves implanting devices (for example, rods, plates, or screws) on the front (anterior) portion of the spine to stabilize and correct alignment over multiple contiguous levels.
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Service type: Anterior spinal instrumentation and fixation for multilevel deformity correction
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Typical site of service: Hospital operating room or ambulatory surgical center for spine surgery
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient with progressive thoracolumbar scoliosis presents with chronic back pain, coronal imbalance, and progressive radiculopathy after failing conservative management including physical therapy and epidural injections. Imaging demonstrates a spinal deformity spanning the lower thoracic and upper lumbar segments involving five vertebral levels with deformity-related sagittal imbalance. The surgical team plans an anterior spinal approach for deformity correction with placement of anterior spinal instrumentation across four to seven vertebral segments (22846) as part of a staged fusion procedure. The operative workflow includes preoperative assessment and optimization, intraoperative anterior exposure (thoracotomy or retroperitoneal approach depending on level), discectomy and interbody preparation, placement of anterior instrumentation across the affected segments, intraoperative imaging to confirm alignment and hardware position, and postoperative recovery including pain control, wound monitoring, and mobilization with physical therapy. Typical sites of service are the hospital operating room or inpatient surgical suite for a procedure performed by spine surgeons (orthopedic spine or neurosurgery) often as part of a multistage fusion for deformity correction.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
62 | Two surgeons | When two surgeons of different specialties operate together and each performs distinct portions of the procedure. |