Overview of CPT Code 22818: Posterior spinal fusion, posterior approach, single level
CPT Code 22818 refers to a surgical procedure known as posterior spinal fusion, which is performed through the back to stabilize the spine at a single level. This procedure is typically indicated for patients with spinal instability or deformities.
When CPT Code 22818 is Used?
This procedure is appropriate in various clinical scenarios.
- Severe spinal instability due to trauma or degenerative disease.
- Spondylolisthesis where one vertebra slips over another.
- Spinal deformities such as scoliosis.
- Failed conservative treatment for back pain or instability.
Symptoms Indicating This Procedure
Patients may report several symptoms that lead to the consideration of this procedure.
- Chronic back pain that does not improve with conservative treatment.
- Numbness or weakness in the legs.
- Difficulty walking or maintaining balance.
- Visible spinal deformity.
Causes and Risk Factors
Several factors can contribute to the need for this procedure.
- Traumatic injury to the spine.
- Degenerative disc disease.
- Genetic predisposition to spinal disorders.
- Previous spinal surgeries that have failed.
Diagnostic Tests Before Procedure
Several diagnostic tests are typically performed to assess the need for surgery.
- X-rays to evaluate spinal alignment and stability.
- MRI to assess soft tissue and nerve involvement.
- CT scans for detailed imaging of the spine.
- Electromyography (EMG) to evaluate nerve function.
Procedure Description
The procedure involves several key steps.
- Patient is placed under general anesthesia.
- An incision is made along the midline of the back.
- Muscle and tissue are carefully moved aside to access the spine.
- The affected vertebrae are prepared for fusion.
- Bone graft material is placed to promote fusion.
- The incision is closed with sutures or staples.
Preparation for the Procedure
Patients should follow specific guidelines before surgery.
- Avoid eating or drinking after midnight before the surgery.
- Discuss all medications with the surgeon, including over-the-counter drugs.
- Arrange for transportation to and from the hospital.
- Follow any specific instructions provided by the healthcare team.
Recovery and Aftercare
Recovery can vary, but certain aspects are common.
- Hospital stay of 1-3 days post-surgery.
- Gradual return to normal activities over several weeks.
- Physical therapy may be recommended to aid recovery.
- Pain management with prescribed medications.
Possible Complications
As with any surgery, there are potential risks.
- Infection at the surgical site.
- Nerve damage leading to weakness or numbness.
- Non-union of the vertebrae.
- Blood clots in the legs or lungs.


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Learn morePost-Procedure Follow-Up
Follow-up care is essential for monitoring recovery.
- Initial follow-up appointment within 2 weeks post-surgery.
- Regular check-ups every 4-6 weeks for the first few months.
- Imaging studies may be repeated to assess healing.
Alternative Treatments
There are non-surgical options available.
- Physical therapy to strengthen back muscles.
- Chiropractic care for spinal alignment.
- Pain management techniques including injections.
- Medications such as NSAIDs for pain relief.
Home Care Tips
Patients can take steps to aid their recovery at home.
- Follow prescribed medication schedules.
- Engage in light activities as tolerated.
- Avoid heavy lifting or strenuous activities.
- Keep the surgical site clean and dry.
Patient Education & Prevention
Education is key to preventing future issues.
- Maintain a healthy weight to reduce spinal stress.
- Engage in regular exercise to strengthen back muscles.
- Practice good posture to support spinal health.
- Avoid smoking, which can impede healing.
Billing and Coding Information
CPT Code: 22818
Category: Surgery
Common Modifiers:
- 50 - Bilateral procedure
- RT - Right side
- LT - Left side
Average Cost and Insurance Coverage
Costs can vary based on several factors.
- Average cost ranges from $30,000 to $60,000.
- Insurance typically covers the procedure if deemed medically necessary.
- Out-of-pocket costs depend on the patient's insurance plan.
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