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The procedure described by CPT® Code 64864 involves the surgical suture of the extracranial portion of the facial nerve, which is also known as cranial nerve VII (CN VII). This nerve is primarily responsible for facial expression and contains both somatosensory and secretomotor fibers. The extracranial segment of the facial nerve begins at the stylomastoid foramen, where it exits the skull. Once outside the skull, the facial nerve branches into several rami and divides into its main branches, which are essential for various facial functions. During the procedure, the surgeon exposes and explores the extracranial facial nerve to assess the extent of any injury. If damage is identified, the affected tissue is debrided to prepare for repair. Intraoperative nerve function testing and monitoring may be performed as necessary to ensure proper nerve function is maintained. The repair of the nerve ends is accomplished using sutures, which may involve a microscopic technique if required. The surgical approach can vary, with options including epineural repair, where sutures are placed in the epineurium of the nerve ends, or perineural closure, which involves suturing individual fascicles of axons together. The goal of the procedure is to achieve end-to-end closure of the nerve while avoiding tension on the sutures. Following the nerve repair, the overlying soft tissues and skin are meticulously repaired in layers to promote optimal healing.
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The procedure described by CPT® Code 64864 is indicated for the repair of the extracranial portion of the facial nerve in cases of injury or trauma. Specific indications for this procedure may include:
The procedure for the suture of the extracranial facial nerve involves several critical steps, which are detailed as follows:
Post-procedure care following the suture of the facial nerve includes monitoring for signs of nerve function recovery and managing any potential complications. Patients may require follow-up visits to assess the healing process and the restoration of facial function. Pain management and wound care are also essential components of post-operative care. The expected recovery time may vary depending on the extent of the injury and the success of the repair, with some patients experiencing gradual improvement in facial movement over time.
| Short Descr | REPAIR OF FACIAL NERVE | Medium Descr | SUTURE FACIAL NERVE EXTRACRANIAL | Long Descr | Suture of facial nerve; extracranial | 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) | P1G - Major procedure - Other | MUE | 2 | CCS Clinical Classification | 9 - Other OR therapeutic nervous system procedures |
This is a primary code that can be used with these additional add-on codes.
| 64872 | Addon Code MPFS Status: Active Code APC N ASC N1 Illustration for Code Suture of nerve; requiring secondary or delayed suture (List separately in addition to code for primary neurorrhaphy) | 64874 | Addon Code MPFS Status: Active Code APC N ASC N1 Illustration for Code Suture of nerve; requiring extensive mobilization, or transposition of nerve (List separately in addition to code for nerve suture) | 64876 | Addon Code MPFS Status: Active Code APC N ASC N1 CPT Assistant Article Illustration for Code Suture of nerve; requiring shortening of bone of extremity (List separately in addition to code for nerve suture) | 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) |
| SG | Ambulatory surgical center (asc) facility 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. | 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. | 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. | 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). | 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 | LT | Left side (used to identify procedures performed on the left side of the body) | RT | Right side (used to identify procedures performed on the right side of the body) | XS | Separate structure, a service that is distinct because it was performed on a separate organ/structure |
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