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Official Description

Osteotomy of spine, posterior or posterolateral approach, 3 columns, 1 vertebral segment (eg, pedicle/vertebral body subtraction); thoracic

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A three-column osteotomy of the spine, commonly known as a pedicle subtraction osteotomy, is a surgical procedure performed on a single thoracic segment using a posterior or posterolateral approach, as indicated by CPT® Code 22206. The spine is anatomically divided into three columns: the anterior column, which consists of the vertebral body; the middle column, made up of two robust pedicles that encase the vertebral foramen through which the spinal cord traverses; and the posterior column, which includes the lamina, two transverse processes, and the spinous process. This type of osteotomy is particularly relevant in the context of addressing complex spinal deformities, often necessitating the surgical intervention of all three columns. The procedure begins with an incision made in the skin over the affected vertebral segment, or alternatively, to the side of the segment that requires reconstruction. Following the incision, the fascia is cut, and a subperiosteal dissection is performed along the spinal process, lamina, both transverse processes, and the rib head of the targeted vertebral segment. The surgical approach is designed to facilitate the resection of the posterior segment while preserving the integrity of the pedicles, which is crucial for maintaining spinal stability. This detailed and methodical approach allows for effective correction of spinal deformities while minimizing potential complications associated with the procedure.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure is indicated for the correction of complex spinal deformities affecting the thoracic region. Specific indications include:

  • Spinal Deformities Conditions such as scoliosis or kyphosis that require surgical intervention to restore normal spinal alignment.
  • Vertebral Body Anomalies Situations where there are structural abnormalities in the vertebral body that necessitate resection and reconstruction.
  • Post-Traumatic Deformities Deformities resulting from trauma that have led to significant spinal misalignment.

2. Procedure

The procedure involves several critical steps to ensure effective correction of the spinal deformity:

  • Incision An incision is made in the skin of the back directly over the deformed vertebral segment or to the side of the segment requiring reconstruction. This initial step is crucial for accessing the underlying structures.
  • Fascia Incision The fascia is incised to allow for deeper access to the spinal structures. This step is essential for facilitating the subsequent dissection.
  • Subperiosteal Dissection A subperiosteal dissection is performed along the spinal process, lamina, both transverse processes, and the rib head of the vertebral segment. This careful dissection helps to expose the necessary anatomical structures while preserving surrounding tissues.
  • Resection of the Posterior Segment The posterior segment is resected, ensuring that the pedicles are preserved. This includes excision of the lamina (laminectomy), excision of the facets bilaterally (facetectomy), and resection of the ribs bilaterally, which is critical for achieving the desired correction.
  • Cavity Creation A cavity is created under the pedicles, which are then resected. This step is vital for allowing the necessary adjustments to the vertebral body.
  • Wedge Resection A wedge resection of the vertebral body is performed to facilitate the correction of the deformity. This involves removing a wedge-shaped section of the vertebral body to allow for realignment.
  • Thinning of the Posterior Vertebral Wall A curette is used to thin the posterior vertebral wall until it is paper thin, which is important for the subsequent steps of the procedure.
  • Lateral Resection The lateral portions of the vertebra are resected to further assist in the correction of the deformity.
  • Greenstick Technique A reverse angled curette is utilized to greenstick the posterior cortex of the vertebral body, which helps in achieving the necessary flexibility for correction.
  • Final Resection The lateral vertebral body wall is resected at the level of the pedicles, allowing for the final adjustments to be made.
  • Closure of the Osteotomy The osteotomy is closed so that all columns are situated bone-on-bone, ensuring stability and proper alignment. This step is crucial for the success of the procedure.
  • Intraoperative Imaging Correction of the deformity is evaluated by intraoperative imaging, which provides real-time feedback on the alignment and positioning of the vertebral segments.

3. Post-Procedure

Post-procedure care involves monitoring the patient for any complications and ensuring proper recovery. Patients may require pain management and physical therapy to aid in rehabilitation. Follow-up imaging may be necessary to assess the success of the osteotomy and the alignment of the spine. Additionally, patients should be educated on activity restrictions and signs of potential complications, such as infection or neurological deficits, that may require immediate medical attention.

Short Descr INCIS SPINE 3 COLUMN THORAC
Medium Descr OSTEOTOMY SPINE POSTERIOR 3 COLUMN THORACIC
Long Descr Osteotomy of spine, posterior or posterolateral approach, 3 columns, 1 vertebral segment (eg, pedicle/vertebral body subtraction); thoracic
Status Code Active Code
Global Days 090 - Major Surgery
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 1 - Co-surgeons could be paid, though supporting documentation is required...
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Inpatient Procedures, not paid under OPPS
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P3D - Major procedure, orthopedic - other
MUE 1
CCS Clinical Classification 142 - Partial excision bone

This is a primary code that can be used with these additional add-on codes.

22208 Addon Code MPFS Status: Active Code APC C CPT Assistant Article Osteotomy of spine, posterior or posterolateral approach, 3 columns, 1 vertebral segment (eg, pedicle/vertebral body subtraction); each additional vertebral segment (List separately in addition to code for primary procedure)
22840 Addon Code MPFS Status: Active Code APC N ASC N1 Physician Quality Reporting CPT Assistant Article Posterior non-segmental instrumentation (eg, Harrington rod technique, pedicle fixation across 1 interspace, atlantoaxial transarticular screw fixation, sublaminar wiring at C1, facet screw fixation) (List separately in addition to code for primary procedure)
22841 Addon Code MPFS Status: Bundled Code APC C Physician Quality Reporting CPT Assistant Article Internal spinal fixation by wiring of spinous processes (List separately in addition to code for primary procedure)
22842 Addon Code MPFS Status: Active Code APC N ASC N1 Physician Quality Reporting CPT Assistant Article Posterior segmental instrumentation (eg, pedicle fixation, dual rods with multiple hooks and sublaminar wires); 3 to 6 vertebral segments (List separately in addition to code for primary procedure)
22843 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Posterior segmental instrumentation (eg, pedicle fixation, dual rods with multiple hooks and sublaminar wires); 7 to 12 vertebral segments (List separately in addition to code for primary procedure)
22844 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Posterior segmental instrumentation (eg, pedicle fixation, dual rods with multiple hooks and sublaminar wires); 13 or more vertebral segments (List separately in addition to code for primary procedure)
22845 Addon Code MPFS Status: Active Code APC N ASC N1 Physician Quality Reporting CPT Assistant Article Illustration for Code Anterior instrumentation; 2 to 3 vertebral segments (List separately in addition to code for primary procedure)
22846 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Anterior instrumentation; 4 to 7 vertebral segments (List separately in addition to code for primary procedure)
22847 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Anterior instrumentation; 8 or more vertebral segments (List separately in addition to code for primary procedure)
22848 Addon Code MPFS Status: Active Code APC N Physician Quality Reporting CPT Assistant Article Pelvic fixation (attachment of caudal end of instrumentation to pelvic bony structures) other than sacrum (List separately in addition to code for primary procedure)
22853 CPT Add On MPFS Status: Active Code APC N ASC N1 Insertion of interbody biomechanical device(s) (eg, synthetic cage, mesh) with integral anterior instrumentation for device anchoring (eg, screws, flanges), when performed, to intervertebral disc space in conjunction with interbody arthrodesis, each interspace (List separately in addition to code for primary procedure)
22854 CPT Add On MPFS Status: Active Code APC N ASC N1 Insertion of intervertebral biomechanical device(s) (eg, synthetic cage, mesh) with integral anterior instrumentation for device anchoring (eg, screws, flanges), when performed, to vertebral corpectomy(ies) (vertebral body resection, partial or complete) defect, in conjunction with interbody arthrodesis, each contiguous defect (List separately in addition to code for primary procedure)
22859 CPT Add On CPT Resequenced MPFS Status: Active Code APC N ASC N1 Insertion of intervertebral biomechanical device(s) (eg, synthetic cage, mesh, methylmethacrylate) to intervertebral disc space or vertebral body defect without interbody arthrodesis, each contiguous defect (List separately in addition to code for primary procedure)
62 Two surgeons: when 2 surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62 to the procedure code and any associated add-on code(s) for that procedure as long as both surgeons continue to work together as primary surgeons. each surgeon should report the co-surgery once using the same procedure code. if additional procedure(s) (including add-on procedure(s) are performed during the same surgical session, separate code(s) may also be reported with modifier 62 added. note: if a co-surgeon acts as an assistant in the performance of additional procedure(s), other than those reported with the modifier 62, during the same surgical session, those services may be reported using separate procedure code(s) with modifier 80 or modifier 82 added, as appropriate.
22 Increased procedural services: when the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code. documentation must support the substantial additional work and the reason for the additional work (ie, increased intensity, time, technical difficulty of procedure, severity of patient's condition, physical and mental effort required). note: this modifier should not be appended to an e/m service.
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
78 Unplanned return to the operating/procedure room by the same physician or other qualified health care professional following initial procedure for a related procedure during the postoperative period: it may be necessary to indicate that another procedure was performed during the postoperative period of the initial procedure (unplanned procedure following initial procedure). when this procedure is related to the first, and requires the use of an operating/procedure room, it may be reported by adding modifier 78 to the related procedure. (for repeat procedures, see modifier 76.)
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
82 Assistant surgeon (when qualified resident surgeon not available): the unavailability of a qualified resident surgeon is a prerequisite for use of modifier 82 appended to the usual procedure code number(s).
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CR Catastrophe/disaster related
GC This service has been performed in part by a resident under the direction of a teaching physician
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
Date
Action
Notes
2013-01-01 Changed Short Descriptor changed.
2011-01-01 Changed Short description changed.
2010-01-01 Changed Code description changed.
2008-01-01 Added First appearance in code book in 2008.
1987-12-31 Deleted Code deleted.
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