Summary & Overview
CPT 63091: Lower Thoracic/Lumbar/Sacral Vertebral Excision with Decompression
CPT code 63091 denotes excision of all or part of a lower thoracic, lumbar, or sacral vertebra via a transperitoneal or retroperitoneal approach with decompression of the spinal cord, cauda equina, and/or nerve roots at an additional level. This code captures complex spinal surgery typically performed for decompression and stabilization in the lower spine and is relevant for hospital and ambulatory surgical billing. Nationally, accurate use of this code affects facility and professional payment, quality reporting, and case-mix measurement for spine surgery services.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for the procedure, typical sites of service, and common billing modifiers. The publication summarizes benchmarks and policy considerations affecting reimbursement and claim adjudication for complex lower spine excisions, highlights coding nuances for additional-level decompression, and identifies areas where documentation supports correct code selection. This resource is intended for billing professionals, surgical practices, and hospital administrators seeking clarity on use of CPT code 63091 and its role in national billing and policy frameworks.
Billing Code Overview
CPT code 63091 describes a surgical procedure in which the provider excises all or part of a lower thoracic, lumbar, or sacral vertebra via a transperitoneal (abdominal) or retroperitoneal (anterolateral) approach, with decompression of the spinal cord, cauda equina, and/or nerve roots at an additional level after the first excision.
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Service type: Major spinal excision with decompression at an additional level
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Typical site of service: Hospital operating room or ambulatory surgical center for complex spinal surgery
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient with progressive neurogenic claudication and bilateral lower-extremity radiculopathy from multilevel degenerative lumbar spinal stenosis presents after failing conservative care (physical therapy, epidural steroid injections) for six months. Imaging (MRI of the lumbar spine) demonstrates severe central canal stenosis at L3–L4 with adjacent-level involvement at L4–L5 and signal compression of the cauda equina. The spine surgeon elects to perform an anterior/anterolateral retroperitoneal approach for vertebral body excision and decompression at an additional level after a prior excision, consistent with a staged or multilevel anterior decompressive procedure.
The clinical workflow includes: preoperative evaluation with history, focused neurologic exam, and review of imaging; medical optimization and anesthesia assessment; intraoperative neuromonitoring and fluoroscopic confirmation of levels; performance of the transperitoneal or retroperitoneal approach with excision of the indicated lower thoracic, lumbar, or sacral vertebral body and decompression of the spinal canal and nerve roots at the additional level; placement of instrumentation or grafting as indicated; postoperative recovery in PACU with neurologic checks; and inpatient postoperative care with imaging and discharge planning for follow-up and rehabilitation.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work or complexity substantially exceeds typical for . |