Summary & Overview
CPT 63185: Spinal Rhizotomy via Laminotomy or Laminectomy
CPT code 63185 represents a surgical rhizotomy performed through laminotomy or laminectomy under general anesthesia to section spinal nerve roots for relief of neuromuscular symptoms. This procedure is clinically significant due to its role in treating refractory pain and spasticity when conservative therapies have failed, and it has implications for surgical capacity, anesthesia services, and post-operative care nationally. Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context and typical settings for the service, an outline of common billing modifiers and their relevance, and notes on payer coverage patterns where available. The publication also summarizes expected service lines and site-of-service considerations, and highlights where input data are not available. This resource is intended to help coding, billing, and policy professionals quickly understand the purpose of the code, typical clinical usage, and the payer landscape relevant to CPT code 63185.
Billing Code Overview
CPT code 63185 describes a rhizotomy performed through laminotomy or laminectomy under general anesthesia. The procedure involves surgical sectioning of nerve roots in the spinal cord to relieve symptoms related to neuromuscular conditions.
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Service type: Surgical spinal nerve-root procedure
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Typical site of service: Inpatient or outpatient hospital operating room under general anesthesia
Clinical & Coding Specifications
Clinical Context
A 56-year-old patient with refractory spasticity secondary to spinal cord injury presents with progressive lower extremity muscle hypertonicity, painful spasms, and impaired mobility despite optimized oral antispasmodic medications and physical therapy. After multidisciplinary evaluation including neurology, physiatry, and spine surgery, the care team and patient elect surgical dorsal root entry zone rhizotomy via laminotomy to reduce spasticity and improve function. The procedure is performed in an operating room under general anesthesia. Relevant preoperative steps include MRI of the spine to localize pathology, pre-anesthesia evaluation, informed consent documenting risks and benefits, and coordination for intraoperative neuromonitoring when indicated. Postoperative workflow includes recovery in PACU, pain management, neurologic and wound checks, early mobilization with physical therapy, and outpatient follow-up for assessment of spasticity reduction and functional gains.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work, time, or complexity substantially exceeds usual for 63185 and documentation supports increased work. |
23 |