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Official Description

Laminectomy with rhizotomy; 1 or 2 segments

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Laminectomy with rhizotomy, as described by CPT® Code 63185, is a surgical procedure aimed at alleviating spasticity that has not responded to conservative treatments, including oral medications and less invasive interventions such as facet joint or nerve root injections of botulinum toxin, phenol, or alcohol. Rhizotomy specifically targets the nerve rootlets responsible for spasticity, which is often seen in conditions like cerebral palsy, particularly affecting the lower extremities. The procedure begins with an incision over the spine in the area designated for the rhizotomy, extending down to the spinous processes to provide adequate access. Following this, muscle tissue is carefully retracted to expose the lamina and facet joint. A bone drill is utilized to remove part or all of the lamina, allowing for the exposure of the spinal cord and nerve roots. During the procedure, electrical stimulation is applied to individual nerve rootlets to accurately identify the motor nerve rootlets contributing to the spasticity, which are then selectively cut to relieve the symptoms. This code is specifically used when the rhizotomy is performed on one or two vertebral segments, while a different code, CPT® 63190, is designated for procedures involving more than two segments.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure of laminectomy with rhizotomy is indicated for patients experiencing severe spasticity that has not adequately responded to conservative treatment options. The following conditions and symptoms may warrant this surgical intervention:

  • Severe Lower Extremity Spasticity - This condition is often associated with neurological disorders such as cerebral palsy, where muscle stiffness and spasms significantly impair mobility and quality of life.
  • Inadequate Response to Medications - Patients who have not found relief from oral medications aimed at reducing spasticity may be considered for this procedure.
  • Failure of Less Invasive Treatments - Individuals who have not benefited from less invasive modalities, including nerve root or facet joint injections of botulinum toxin, phenol, or alcohol, may also be candidates for laminectomy with rhizotomy.

2. Procedure

The laminectomy with rhizotomy procedure involves several critical steps to ensure effective treatment of spasticity. The following outlines the procedural steps:

  • Step 1: Incision - The procedure begins with a surgical incision made over the spine in the specific region where the rhizotomy will be performed. This incision is carefully extended down to the spinous processes to provide adequate access to the underlying structures.
  • Step 2: Muscle Retraction - Once the incision is made, the surrounding muscle tissue is retracted away from the lamina and facet joint. This retraction is essential to expose the bony structures of the spine and facilitate the next steps of the procedure.
  • Step 3: Bone Removal - A bone drill is then utilized to remove part or all of the lamina, which is the bony arch of the vertebra. This step is crucial as it allows for the exposure of the spinal cord and the nerve roots that will be targeted during the rhizotomy.
  • Step 4: Nerve Rootlet Identification - With the spinal cord and nerve roots exposed, electrical stimulation is applied selectively to individual nerve rootlets. This stimulation helps to identify the specific motor nerve rootlets that are responsible for the spasticity.
  • Step 5: Nerve Rootlet Cutting - After identifying the problematic nerve rootlets, the surgeon proceeds to cut these rootlets. This selective cutting is intended to alleviate the spasticity by interrupting the abnormal signals that contribute to muscle stiffness and spasms.

3. Post-Procedure

Following the laminectomy with rhizotomy, patients typically require careful monitoring and post-operative care to ensure proper recovery. Expected recovery may involve pain management, physical therapy, and follow-up appointments to assess the effectiveness of the procedure. Patients may experience some initial discomfort at the incision site, which is managed with appropriate analgesics. Rehabilitation through physical therapy is often recommended to help regain strength and mobility in the affected areas. It is important for patients to adhere to their post-operative care instructions and attend all follow-up visits to monitor their progress and address any complications that may arise.

Short Descr INCISE SPINE NRV HALF SEGMNT
Medium Descr LAMINECTOMY W/RHIZOTOMY 1/2 SEGMENTS
Long Descr Laminectomy with rhizotomy; 1 or 2 segments
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) P1F - Major procedure - explor/decompr/excis disc
MUE 1
CCS Clinical Classification 3 - Laminectomy, excision intervertebral disc

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

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)
63295 Addon Code MPFS Status: Active Code APC C Osteoplastic reconstruction of dorsal spinal elements, following primary intraspinal procedure (List separately in addition to code for primary procedure)
69990 Addon Code MPFS Status: Restricted APC N ASC N1 PUB 100 CPT Assistant Article 1Microsurgical techniques, requiring use of operating microscope (List separately in addition to code for primary procedure)
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.
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).
52 Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
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.
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.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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.
2009-01-01 Changed Code description changed
Pre-1990 Added Code added.
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