Summary & Overview

CPT 22800: Spinal Fusion (Arthrodesis) up to Six Vertebral Segments

CPT code 22800 represents a surgical spinal fusion (arthrodesis) performed to secure vertebrae and alleviate persistent pain from spinal deformities such as scoliosis or kyphosis. The code applies to procedures on up to six vertebral segments and may include use of a body cast. This code is nationally relevant because spinal fusion is a commonly billed major orthopedic and neurosurgical procedure with implications for inpatient and outpatient surgical capacity, payer reimbursement, and quality measurement.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for CPT code 22800, coverage and billing considerations across major payers, and benchmarking information where available. The publication outlines typical sites of service, common clinical indications, and procedural scope, and it highlights areas where policy updates or payer rules commonly affect claim adjudication and coding specificity.

This executive summary prepares clinicians, coding professionals, and policy analysts to understand how CPT code 22800 is used in practice, what operational settings are typical, and which payers are central to national coverage and reimbursement discussions. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare22800CPTspinal fusionarthrodesisorthopedic surgeryneurosurgeryinpatient surgeryoutpatient surgery

Billing Code Overview

CPT code 22800 describes an arthrodesis (spinal fusion) procedure in which the provider fuses vertebrae to one another to treat persistent pain from spinal deformities such as scoliosis or kyphosis. The procedure may be performed on up to six vertebral segments and can include application of a body cast when clinically indicated.

Service type: Surgical — Spinal fusion/arthrodesis

Typical site of service: Hospital inpatient or outpatient surgical center, depending on clinical complexity and duration of stay.

Clinical & Coding Specifications

Clinical Context

A 56-year-old patient with progressive lumbar degenerative spondylolisthesis and chronic axial low back pain refractory to conservative care presents for surgical management. Preoperative evaluation includes history and physical, imaging (standing lumbar radiographs, MRI showing instability and neural element compression), and optimization of comorbidities. The surgeon plans an open posterior spinal arthrodesis (spinal fusion) of three contiguous vertebral segments to stabilize the spine and relieve deformity and pain; intraoperative neuromonitoring and general anesthesia are used. The procedure may include decortication of posterior elements, placement of instrumentation (pedicle screws and rods), local autograft or allograft bone, and application of external immobilization such as a body cast or brace postoperatively. Typical perioperative workflow: preoperative clearance and informed consent → anesthesia induction and positioning → surgical exposure and fusion with instrumentation → hemostasis and closure → immediate postoperative recovery in PACU → inpatient observation for pain control and mobilization. Typical site of service is an inpatient hospital operating room; ambulatory surgical center may be appropriate for select patients when health status and fusion levels permit. Common payors include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.

Coding Specifications

Modifier	Description	When to Use
`62`	Two surgeons	Use when two surgeons work together as primary surgeons during the fusion for distinct, substantive portions of the procedure.
`66`	Surgical team	Use when a surgical team performs the procedure with multiple members under a single surgeon’s direction.
`50`	Bilateral procedure	Rare for spinal fusion; use only when the procedure is reported as bilateral per payer policy (typically not applicable to single midline fusion).
`51`	Multiple procedures	Use when additional unrelated procedural CPT codes are reported on the same date of service.
`52`	Reduced services	Use when the fusion is intentionally partially reduced or not completed as planned.
`53`	Discontinued procedure	Use when the fusion is started but discontinued due to extenuating circumstances.
`78`	Unplanned return to OR for related procedure during postoperative period	Use when patient returns to OR for a complication related to the original fusion during the global period.
`79`	Unrelated procedure or service by the same physician during the postoperative period	Use when an unrelated procedure is performed during the global period.
`22`	Increased procedural services	Use when the fusion requires substantially greater effort or complexity than usual and documentation supports unusual services.
`63`	Procedure performed on infants less than 4 kg	Use when applicable for neonatal/infant spinal fusion (rare).
`58`	Staged or related procedure by the same physician during the postoperative period	Use when the fusion is planned as a staged procedure (e.g., staged anterior and posterior fusion).
`76`	Repeat procedure by same physician	Use when the same surgeon repeats the fusion procedure later the same day (uncommon).
`77`	Repeat procedure by another physician	Use when a different surgeon repeats the procedure the same day.
`23`	Unusual anesthesia	Use when general anesthesia cannot be used and an unusual anesthesia technique is employed (documentation required).

Taxonomy Code	Specialty	Notes
`2084P0800X`	Orthopedic Surgery	Spine surgeons in orthopedic specialty commonly perform spinal arthrodesis.
`2086S0125X`	Neurological Surgery	Neurosurgeons specializing in spine perform fusions for deformity and instability.
`207L00000X`	Physical Medicine & Rehabilitation	PM&R physicians coordinate perioperative rehabilitation and nonsurgical management pre/post fusion.
`207RG0300X`	Pain Medicine	Interventional pain specialists may be involved in preoperative optimization and postoperative pain management.
`174400000X`	Anesthesiology	Anesthesiologists provide intraoperative anesthesia and pain control; may include regional techniques.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`M43.16`	Spondylolisthesis, lumbar region	Lumbar spondylolisthesis with instability often requires fusion to restore alignment and stability.
`M41.26`	Adolescent idiopathic scoliosis, lumbar region	Scoliosis causing deformity and pain may be treated with multi-level fusion to correct curvature.
`M48.06`	Spinal stenosis, lumbar region	Neurogenic claudication from stenosis can be addressed with decompression and fusion when instability is present.
`M47.26`	Other spondylosis with radiculopathy, lumbar region	Degenerative disc disease with radiculopathy may lead to fusion when conservative care fails.
`M51.16`	Intervertebral disc disorders with myelopathy, lumbar region	Severe disc disease with neurologic compromise may necessitate fusion with decompression.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`22842`	Arthrodesis, posterior or posterolateral technique, single level; lumbar	Often used when fusion is performed one level posteriorly; may be reported for each level fused in addition to instrumentation codes.
`22845`	Arthrodesis, combined posterior or posterolateral and interbody technique, single interspace and segment; lumbar	Used when posterior fusion includes interbody work at the same level as part of the fusion strategy.
`22612`	Arthrodesis, posterior or posterolateral technique, 4-6 vertebral segments	Applicable when fusion spans multiple segments (4–6); this code corresponds to multi-segment posterior fusion.
`22851`	Application of intervertebral biomechanical device (e.g., cage) with integral fixation, lumbar	Reported when an interbody cage is placed during fusion as part of reconstructive stabilization.
`20930`	Allograft, morselized or placement of osteopromotive material	Used when bone grafting with allograft material is utilized to promote fusion during the arthrodesis.
`22853`	Insertion of interlaminar stabilization device (e.g., device between spinous processes)	May be reported when adjunct stabilization devices are placed in conjunction with fusion.