Find policies, billing codes, payers, states, and providers
CPT 22633: Lumbar Spinal Fusion of Two Adjacent Vertebral Bodies
CPT code 22633 represents a lumbar spinal fusion procedure that permanently joins two adjacent lumbar vertebral bodies using combined surgical approaches. This operative code is commonly used for patients with degenerative disc disease, spinal stenosis, spondylolisthesis, or other lumbar conditions that threaten stability or cause persistent pain. Nationally, lumbar fusion procedures are a significant driver of surgical spinal care utilization and have implications for hospital resource use, perioperative management, and quality measurement.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for 22633, how it relates to commonly billed companion procedures (such as instrumentation and interbody device insertion), and the typical care settings where the procedure is performed. The publication summarizes coding relationships, common diagnosis pairings, and payor coverage considerations that influence billing and authorization workflows.
The report is structured to provide actionable reference material: a clinical description of the procedure, mapping to common ICD-10 diagnoses associated with lumbar fusion, related procedure codes often billed on the same claim, and a summary of payer presence for benchmarking. Data not available in the input will be noted where applicable.
Customize your policy alerts
Sign up for cpt 22633 policy alerts
Get alerted when payer policies referencing 22633 are released or updated.
Monitor payer policy activity
Billing Code Overview
CPT code 22633 describes a lumbar spinal fusion procedure in which the provider permanently joins two adjoining lumbar vertebral bodies using a combination of surgical approaches to improve outcome and prevent further damage or pain in the joint.
-
Service type: Surgical spinal fusion, lumbar
-
Typical site of service: Inpatient or outpatient hospital operating room depending on clinical complexity and perioperative needs
National Reimbursement Benchmarks
Across national payers, Medicare's mean allowed rate of $1,709.50 sits well below BUCA’s average commercial mean of $4,379.60, highlighting a sizable gap between public and this commercial benchmark. Median and mean distinctions among commercial payers place Blue Cross Blue Shield and Cigna above Medicare, while Aetna’s mean is closer to the public rate; UnitedHealth Group’s mean is also substantially higher than Medicare.
Dispersion measured as the interquartile range (P75 minus P25) is widest for Blue Cross Blue Shield at $7,756.90 and notably large for BUCA at $5,220.70, indicating substantial variability among commercial contracts. The tightest spreads are Aetna at $1,535.80 and Medicare at $140.00, signaling more consistent reimbursement within those payers.