CPT 22633 Reimbursement Benchmarks | OpenPayer

Summary & Overview

CPT 22633: Lumbar Spinal Fusion with Combined Posterior Techniques

CPT code 22633 is a critical billing code for lumbar spinal fusion procedures, specifically combining posterior or posterolateral arthrodesis with a posterior interbody technique. This code is widely used in orthopedic and neurological surgery to address complex lumbar spine conditions, such as disc displacement, spinal stenosis, spondylolisthesis, and chronic low back pain. The procedure is most often performed in an inpatient hospital setting, reflecting its complexity and the need for specialized surgical care.

Major national payers, including Aetna, Blue Cross Blue Shield, Cigna Health, Medicare, and UnitedHealthcare, provide coverage for services billed under CPT code 22633. Understanding payer policies and reimbursement benchmarks for this code is essential for hospitals, health systems, and clinicians navigating the evolving landscape of spine surgery billing and compliance.

This publication offers a comprehensive overview of CPT code 22633, including clinical context, payer coverage, and related coding considerations. Readers will gain insights into current policy updates, typical clinical indications, and how this code fits within broader orthopedic surgery billing practices. The analysis also highlights associated codes and modifiers relevant to lumbar arthrodesis, supporting accurate and compliant medical billing.

AetnaBlue Cross Blue ShieldCigna HealthMedicareUnitedHealthcareCPT 22633lumbar arthrodesisorthopedic surgeryspine surgeryinpatient hospitalmedical billingposterior interbody techniqueclinical codingpolicy updatesurgical procedures

CPT Code Overview

CPT code 22633 describes a combined posterior or posterolateral arthrodesis procedure with a posterior interbody technique, including laminectomy and/or discectomy sufficient to prepare the interspace (other than for decompression), performed at a single interspace and segment in the lumbar region. This procedure is typically conducted by orthopedic or neurological surgeons and is classified under orthopedic surgery. The most common site of service for this procedure is the inpatient hospital setting (Place of Service 21).

Clinical & Coding Specifications

Clinical Context

A typical patient scenario involves an adult presenting with chronic low back pain and neurological symptoms due to lumbar spinal pathology. The patient may have imaging-confirmed diagnoses such as lumbar spondylolisthesis, spinal stenosis, or intervertebral disc displacement. Conservative treatments have failed, and the patient is scheduled for surgical intervention. The procedure, performed in an inpatient hospital setting, includes combined posterior or posterolateral arthrodesis with posterior interbody technique, often requiring laminectomy and/or discectomy to prepare the interspace for fusion. The surgical team may include both an orthopedic spine surgeon and a neurological surgeon, with possible assistance from an additional surgeon.

Coding Specifications

Modifiers:
- Modifier 62 (Two Surgeons): Used when two surgeons of different specialties (e.g., orthopedic and neurological surgery) perform distinct parts of the procedure.
- Modifier 80 (Assistant Surgeon): Applied when an additional surgeon assists during the operation.
Provider Taxonomies:

Taxonomy Code	Specialty Name

National Reimbursement Benchmarks

For CPT code 22633, national mean rates for commercial payers are substantially higher than Medicare. The average commercial rate (BUCA) is $2,531.48, while Medicare's mean rate is $1,709.50, reflecting a difference of $821.98 per case.

Rate dispersion varies notably across payers. UnitedHealth Group exhibits the widest spread, with a difference of $1,851.00 between the 75th and 25th percentiles. In contrast, Medicare has the tightest range, with only $140.00 separating its 75th and 25th percentiles. This suggests greater consistency in Medicare reimbursement compared to commercial payers, where rates can vary significantly.

The table and chart below present a detailed breakdown of national benchmarks for each payer, including mean rates and percentile values.

State Benchmarks

State: Alaska1 / 50

Alaska Benchmarks

Alaska exhibits a notably wide spread in reimbursement rates for CPT code 22633 across commercial payers. For example, Aetna's 75th and 25th percentiles are both $8,654.00, indicating a lack of rate variability, while Blue Cross Blue Shield and UnitedHealth Group show spreads of $1,491.00 and $587.08, respectively. The commercial payer rate spreads in Alaska are generally larger than those seen nationally, highlighting significant regional variability.

Mean rates for all commercial payers in Alaska are substantially higher than their national averages. Aetna, UnitedHealth Group, and BUCA all pay well above their national mean rates, with Medicare remaining relatively consistent. The table and chart below present the full breakdown of payer-specific reimbursement rates for Alaska.

Key Insights for Alaska

Aetna is the highest paying payer for CPT 22633 in Alaska, with a mean rate of $7,767.38, while Medicare is the lowest at $1,684.98.
All commercial payers in Alaska reimburse significantly above their respective national averages, with Aetna and UnitedHealth Group showing the largest deviations.
The rate spread for commercial payers is substantial, indicating wide variability in reimbursement across payers.

CPT 22595: Posterior Cervical Fusion of C1–C2

CPT-22590-POSTERIOR-C2-CRANIUM-SPINAL-FUSION

CPT 22590: Posterior C2-to-Cranium Spinal Fusion

22610-ARTHRODESIS-POSTERIOR-OR-POSTEROLATERAL-TECHNIQUE-SINGLE

CPT 22610: Thoracic Spine Arthrodesis, Posterior or Posterolateral Technique

22614-EACH-ADDITIONAL-VERTEBRAL-SEGMENT-LIST-SEPARATELY-IN

CPT 22614: Additional Vertebral Segment for Spinal Fusion

22634-ARTHRODESIS-COMBINED-POSTERIOR-OR-POSTEROLATERAL-TECHNIQUE

CPT 22634: Spinal Arthrodesis, Combined Posterior and Interbody Technique

22630-ARTHRODESIS-POSTERIOR-INTERBODY-TECHNIQUE-INCLUDING

CPT 22630: Lumbar Spine Arthrodesis, Posterior Interbody Technique

22600-ARTHRODESIS-POSTERIOR-OR-POSTEROLATERAL-TECHNIQUE-SINGLE

CPT 22600: Cervical Spine Arthrodesis, Posterior Technique, Single Level

CPT-22632-LUMBAR-SPINAL-FUSION-ADDITIONAL-LEVEL

CPT 22632: Lumbar Spinal Fusion, Additional Level

CPT-22612-LUMBAR-SPINAL-FUSION-ARTHRODESIS

CPT 22612: Lumbar Spinal Fusion (Arthrodesis)

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

`207XS0117X`	Orthopaedic Surgery of the Spine
`207T00000X`	Neurological Surgery
`207XS0106X`	Orthopaedic Surgery

OpenPayer

Summary & Overview

CPT 22633: Lumbar Spinal Fusion with Combined Posterior Techniques

CPT Code Overview

Clinical & Coding Specifications

Clinical Context

Coding Specifications

National Reimbursement Benchmarks

State Benchmarks

Alaska Benchmarks

Key Insights for Alaska

Related Codes

Related Diagnoses

Related CPT Codes

National Reimbursement Benchmarks

State Benchmarks

Alaska Benchmarks

Key Insights for Alaska

Related Codes