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Official Description

Open treatment of mandibular fracture; with interdental fixation

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 21462 refers to the open treatment of a mandibular fracture that requires interdental fixation. This procedure is typically performed when a fracture in the mandible, or lower jaw, has occurred, necessitating surgical intervention to ensure proper alignment and healing. The term 'open treatment' indicates that the procedure involves making an incision to access the fracture site directly, allowing the surgeon to visualize and manipulate the fractured bone fragments. The physician may choose to make the incision either externally, just above the fracture point, or internally, through the mucosal lining of the mouth. Once the fracture is accessed, the surgeon isolates and reduces the fracture, which means they align the bone fragments back into their correct anatomical position. To maintain this alignment during the healing process, various fixation devices such as plates, wires, and screws are employed. The specific code 21462 is utilized when interdental fixation is necessary, which involves wiring the jaws together to stabilize the fracture and facilitate healing. This contrasts with CPT® Code 21461, which is used when intermaxillary fixation is not required. Understanding the nuances of these codes is essential for accurate medical coding and billing, as they reflect different levels of intervention and complexity in the treatment of mandibular fractures.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The open treatment of a mandibular fracture with interdental fixation, represented by CPT® Code 21462, is indicated in several clinical scenarios. These include:

  • Mandibular Fracture The primary indication for this procedure is the presence of a fracture in the mandible, which may result from trauma, such as a fall, accident, or physical altercation.
  • Displacement of Fracture Fragments When the fractured segments of the mandible are displaced, surgical intervention is necessary to realign them properly.
  • Need for Stabilization Interdental fixation is indicated when there is a need to stabilize the mandible during the healing process, ensuring that the bone fragments remain in the correct position.

2. Procedure

The procedure for the open treatment of a mandibular fracture with interdental fixation involves several critical steps:

  • Step 1: Anesthesia Administration The procedure begins with the administration of appropriate anesthesia to ensure the patient is comfortable and pain-free during the surgery. This may involve local anesthesia or general anesthesia, depending on the complexity of the fracture and the patient's needs.
  • Step 2: Incision Creation The surgeon creates an incision either directly above the fracture point or intraorally through the mucosa. This incision allows access to the fractured area of the mandible.
  • Step 3: Fracture Isolation and Visualization Once the incision is made, the surgeon carefully isolates the fracture site. This involves retracting the surrounding tissues to visualize the fracture clearly, which is essential for effective treatment.
  • Step 4: Fracture Reduction The surgeon then reduces the fracture, meaning they align the fractured bone fragments back into their proper anatomical position. This step is crucial for ensuring that the mandible heals correctly.
  • Step 5: Application of Fixation Devices After the fracture has been reduced, the surgeon uses plates, wires, and/or screws to secure the mandible in the correct position. This fixation is vital for maintaining stability during the healing process.
  • Step 6: Interdental Fixation If interdental fixation is necessary, the surgeon wires the jaws together, which helps to stabilize the fracture further and ensures that the mandible remains in the correct position as it heals.
  • Step 7: Closure of Incision Finally, the surgeon closes the incision with sutures, ensuring that the surgical site is properly sealed to promote healing.

3. Post-Procedure

After the open treatment of a mandibular fracture with interdental fixation, patients typically require careful monitoring and follow-up care. Post-procedure care may include pain management, dietary modifications to accommodate the wired jaws, and instructions on oral hygiene to prevent infection. Patients are often advised to follow a soft diet and avoid hard or chewy foods during the healing process. Follow-up appointments are essential to assess the healing of the fracture and to remove any fixation devices if necessary. The expected recovery time can vary based on the severity of the fracture and the individual patient's healing response, but adherence to post-operative instructions is crucial for optimal recovery.

Short Descr OPTX MNDBLR FX W/NTRDNTL
Medium Descr OPEN TX MANDIBULAR FX W/INTERDENTAL FIXATION
Long Descr Open treatment of mandibular fracture; with interdental fixation
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 Device-intensive procedure added to ASC list in CY 2008 or later; paid at adjusted rate.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P3D - Major procedure, orthopedic - other
MUE 1
CCS Clinical Classification 144 - Treatment, facial fracture or dislocation
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.
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.)
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).
AG Primary physician
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
GA Waiver of liability statement issued as required by payer policy, individual case
GC This service has been performed in part by a resident under the direction of a teaching physician
GJ "opt out" physician or practitioner emergency or urgent service
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
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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2025-01-01 Changed Short Description changed.
Pre-1990 Added Code added.
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