Did you know that the utilization of posterior spinal fusions is estimated to increase between 82% and 102% by 2060?
These numbers are enough to understand the significance of the procedure to stabilize the spine by attaching rods, screws, or hooks to the back of multiple specific vertebrae.
If you are an orthopedic surgeon and want to ensure timely reimbursement against CPT code 22842, continue reading!
The reason? This guide covers everything you need to know to streamline your billing workflow, from real-world clinical scenarios to applicable modifiers and billing guidelines.
CPT Code 22842 – Description
CPT code 22842 covers posterior segmental instrumentation across 3 to 6 vertebral segments. Orthopedic surgeons perform this surgical intervention to correct a spinal deformity during the course of a spinal surgery, such as arthrodesis or spinal fusion.
Scenarios Where CPT Code 22842 is Applicable
Let’s review a few real-world clinical scenarios where CPT 22842 applies:
Lumbar Burst Fracture with Acute Traumatic Instability
Picture a 26-year-old female patient who experienced a high-velocity motor vehicle accident. She is admitted to the trauma unit.
Imaging studies reveal acute spinal instability due to an unstable, acute burst fracture of the L2 vertebral body with 30% canal stenosis and retropulsed bone fragments.
Therefore, the orthopedic surgeon performs an emergent posterior stabilization and fusion. During the procedure, he maps out arthrodesis across the damaged region.
Besides, the surgeon anchors the posterior segmental instrumentation one level above and one level below the injury to safely bridge and protect the fractured L2 vertebra. This places bilateral pedicle screws and fixation rods at L1, L2, and L3.
Here, CPT code 22842 applies since the construction spanned 3 vertebral segments.
Progressive Adult Idiopathic Scoliosis
Assume a 44-year-old male patient who comes to the clinic with severe, unmanageable axial back pain and structural trunk asymmetry. He has this condition due to a progressive thoracolumbar scoliosis deformity.
The radiographs revealed a Cobb angle of 42 degrees centered across the lower thoracic and upper lumbar spine. Thus, the surgeon conducts a posterior spinal deformity correction and arthrodesis spanning T11 to L3.
Additionally, he applies segmental instrumentation utilizing pedicle screws at T11, T12, L1, L2, and L3, combined with contouring rods to restore spinal alignment. This was essential to correct the rotational deformity and secure the fusion.
Hence, the biller will report CPT code 22842 to bill for spine fixation device insertion.
Multi-level Lumbar Spondylolisthesis with Segmental Instability
Imagine a 61-year-old female patient with severe, progressive neurogenic claudication and mechanical back pain. The condition is caused by grade II anterolisthesis at L3-L4 and severe facet arthropathy spanning L3 to S1.
Initially, she underwent conservative management, including epidural steroid injections and physical therapy. However, there was no improvement in the condition.
Therefore, the orthopedic surgeon performed a posterior decompressive laminectomy and posterolateral arthrodesis across three interspaces: L3-L4, L4-L5, and L5-S1.
Also, he placed pedicle screws bilaterally at L3, L4, L5, and S1, interconnected with dual titanium rods to rigidly stabilize the construct.
Here, CPT code 22842 will be reported to bill for the procedure.
Applicable Modifiers for CPT Code 22842
Listed below are some of the applicable modifiers for CPT 22842:
Modifier 62
There may be scenarios where two distinct primary surgeons from different specialties share the work and responsibility of the structural spinal instrumentation.
When this happens, both surgeons can submit a claim for CPT code 22842 and append modifier 62.
Note that since this procedural code has a co-surgeon indicator of ‘2’, Medicare will reimburse both surgeons as long as the cross-specialty validation passes. That is, no additional documentation review is required.
Here’s an example for better understanding!
Consider an orthopedic surgeon and a neurosurgeon who worked together as co-primary surgeons to treat a patient with severe thoracolumbar kyphoscoliosis.
During the procedure, the neurosurgeon conducts extensive spinal cord decompression and osteotomies across the levels.
On the other hand, the orthopedic surgeon simultaneously focuses on correcting the structural curvature, contouring the long stabilizing rods, and placing the multi-level posterior hardware.
Modifier 80
What happens when another Doctor of Osteopathic Medicine (DO) or Medical Doctor (MD) participates as the surgical assistant throughout the hardware placement?
The assistant surgeon should submit the claim for CPT code 22842 with modifier 80.
Modifier 81
There may be situations where you need an MD or DO during the spinal hardware placement (CPT code 22842), but for minimal or partial assistance.
For instance, the second MD or DO was called in the operating room only for a brief, critical window of the instrumentation process, such as final rod reduction and tightening across the segments.
When this happens, the assistant surgeon should append modifier 81.
Modifier 82
Did you perform the spinal hardware placement surgery covered under CPT code 22842 in a teaching facility? Besides, a qualified resident surgeon was unavailable. Therefore, another physician assisted during the procedure.
If all these prerequisites and conditions are met, the assistant surgeon should submit the claim with modifier 82.
Modifier AS
What happens when a non-physician provider, such as a physician assistant (PA), nurse practitioner (NP), or clinical nurse specialist (CNS), assists with the spinal hardware placement surgery?
The assistant must append modifier AS to CPT code 22842.
CPT Code 22842 – Billing & Reimbursement Guidelines
Discussed below are the essential billing and reimbursement requirements for CPT 22842:
Demonstrate Medical Necessity
The patient’s medical record must include the following to establish medical necessity:
- Underlying primary diagnosis and relevant ICD-10 code(s). These can be degenerative scoliosis, unstable spinal burst fracture, severe spondylolisthesis, or multi-level pseudoarthrosis.
- The records must also explicitly mention the significant mechanical failure, structural deformity, or spinal instability that conservative therapy can no longer stabilize.
- For non-emergent degenerative cases, documentation must prove the patient attempted and failed an adequate course of non-surgical management.
Disclaimer: Simply stating that the patient failed conservative care is a common audit trap when billing for CPT code 22842. Thus, you should always strive to include specific dates, durations, and clinical outcomes of those conservative treatments to stay compliant.
Fulfill Documentation Requirements
Your documentation for CPT code 22842 must include the following:
- Explicitly state every single vertebral segment involved in the hardware fixation. For example, pedicle screws were placed bilaterally at L2, L3, L4, and L5.
- Clearly mention the exact nature of the instrumentation used. For example, sublaminar wires, locking caps, dual rods, or hooks.
- The patient’s medical record must have the pre-operative imaging reports, such as X-rays, CTs, or MRIs.
- The operative note and all concurrent hospital progress records must contain electronic or physical physician signatures.
Know When NOT to Use CPT Code 22842
Remember that 22842 covers 3 to 6 vertebral segments. Thus, if the procedure involved spinal instrumentation spanning across 7 to 12 vertebral segments, bill CPT 22843.
Conclusion
With that said, it is time to conclude. CPT code 22842 covers spinal instrumentation at the back of the spine across 3 to 6 vertebral segments. In case the surgery involved fewer than 3 or more than 6 segments, other relevant codes must be reported instead.
These slight variations mean so much in medical billing. If you do not focus and choose the wrong procedural code, it often leads to undercoding or upcoding. These errors can also trigger denials and audit risks.
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