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Official Description

Transection or avulsion of other spinal nerve, extradural

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Transection or avulsion of other spinal nerve, extradural, refers to a surgical procedure that involves the severing or removal of a portion of a spinal nerve. This intervention is primarily performed to alleviate chronic pain that may not respond to other treatments. The procedure specifically targets spinal nerves that are not covered by more specific CPT® codes, indicating its use in cases where a distinct coding option is unavailable. The term 'extradural' signifies that the procedure is conducted outside the dural membrane, which is the protective layer surrounding the brain and spinal cord. During the operation, a skin incision is made, and the surrounding soft tissues are carefully dissected to gain access to the affected spinal nerve. Once the nerve is isolated, the surgeon can perform the transection by grasping the nerve and dividing it. In some cases, the nerve may be avulsed by twisting it over a hemostat, or it may be stretched, ligated, and divided in a specific sequence, first distally and then proximally. Following the transection, the proximal end of the nerve retracts into deeper tissues, and the soft tissues are subsequently closed in layers to ensure proper healing. This procedure is distinct from the transection or avulsion of cranial nerves, which is coded separately under CPT® Code 64771.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

Transection or avulsion of other spinal nerve, extradural, is indicated for the treatment of chronic pain conditions that have not responded to conservative management or other therapeutic interventions. This procedure may be considered when patients experience debilitating pain that significantly impacts their quality of life and when other treatment options have been exhausted.

  • Chronic Pain This procedure is performed to alleviate chronic pain that is unresponsive to other treatments.

2. Procedure

The procedure begins with the patient positioned appropriately to allow access to the spinal nerve. A skin incision is made over the targeted area, and the surrounding soft tissues are carefully dissected to expose the spinal nerve. Once the nerve is visualized, it is isolated from the surrounding structures to prevent damage to adjacent tissues. The surgeon then performs the transection by grasping the nerve and dividing it, which may involve cutting through the nerve fibers. In some instances, the nerve may be avulsed by twisting it over a hemostat, which helps to detach it from its surrounding attachments. Alternatively, the surgeon may choose to stretch the nerve, ligate it, and then divide it first at the distal end and subsequently at the proximal end. This method allows for controlled severing of the nerve. After the transection is completed, the proximal end of the nerve retracts into deeper tissues, which is a normal part of the procedure. Finally, the soft tissues are closed in layers to promote proper healing and minimize complications.

  • Step 1: The patient is positioned, and a skin incision is made to access the spinal nerve.
  • Step 2: Soft tissues are dissected to expose and isolate the spinal nerve.
  • Step 3: The nerve is transected by grasping and dividing it, or it may be avulsed by twisting.
  • Step 4: The nerve may also be stretched, ligated, and divided distally and then proximally.
  • Step 5: The proximal end of the nerve retracts into deeper tissues, and the incision is closed in layers.

3. Post-Procedure

After the procedure, patients are typically monitored for any immediate complications. Post-operative care may include pain management strategies to address discomfort following the surgery. Patients may also be advised on activity restrictions to promote healing and prevent strain on the surgical site. Follow-up appointments are essential to assess recovery and address any concerns that may arise during the healing process. The expected recovery time can vary based on individual circumstances and the extent of the procedure performed.

Short Descr INCISION OF SPINAL NERVE
Medium Descr TRANSECTION/AVULSION OTH SPINAL NRV XDRL
Long Descr Transection or avulsion of other spinal nerve, extradural
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 Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Surgical procedure on ASC list in CY 2007; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P5E - Ambulatory procedures - other
MUE 2
CCS Clinical Classification 9 - Other OR therapeutic nervous system procedures
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).
RT Right side (used to identify procedures performed on the right side of the body)
LT Left side (used to identify procedures performed on the left side of the body)
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.
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
GC This service has been performed in part by a resident under the direction of a teaching physician
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
SG Ambulatory surgical center (asc) facility service
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.)
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.
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.
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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.
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).
73 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure prior to the administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may cancel a surgical or diagnostic procedure subsequent to the patient's surgical preparation (including sedation when provided, and being taken to the room where the procedure is to be performed), but prior to the administration of anesthesia (local, regional block(s) or general). under these circumstances, the intended service that is prepared for but cancelled can be reported by its usual procedure number and the addition of modifier 73. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
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).
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
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).
AG Primary physician
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CR Catastrophe/disaster related
F1 Left hand, second digit
F2 Left hand, third digit
F3 Left hand, fourth digit
F4 Left hand, fifth digit
F5 Right hand, thumb
F6 Right hand, second digit
F7 Right hand, third digit
F8 Right hand, fourth digit
F9 Right hand, fifth digit
FA Left hand, thumb
GW Service not related to the hospice patient's terminal condition
GZ Item or service expected to be denied as not reasonable and necessary
KT Beneficiary resides in a competitive bidding area and travels outside that competitive bidding area and receives a competitive bid item
TC Technical component; under certain circumstances, a charge may be made for the technical component alone; under those circumstances the technical component charge is identified by adding modifier 'tc' to the usual procedure number; technical component charges are institutional charges and not billed separately by physicians; however, portable x-ray suppliers only bill for technical component and should utilize modifier tc; the charge data from portable x-ray suppliers will then be used to build customary and prevailing profiles
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
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Pre-1990 Added Code added.
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