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Official Description

Reconstruction of mandibular rami and/or body, sagittal split; without internal rigid fixation

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 21195 involves the surgical reconstruction of the mandibular rami and/or body through a technique known as a sagittal split. This procedure is typically performed to correct various dental and skeletal issues related to the jaw. The term "mandibular rami" refers to the two vertical portions of the mandible, while the "body" refers to the horizontal portion that forms the chin. The sagittal split technique entails making an incision over the mandibular ramus, which allows the surgeon to access the bone directly. Using specialized instruments such as saws, drills, and osteotomes, the surgeon carefully separates the mandible along a predetermined line. Once the mandible is split, it can be repositioned forward to achieve the desired alignment and occlusion. This procedure is coded as 21195 when the mandible is stabilized using wires, as opposed to an internal rigid fixation device, which would be coded under 21196. After the surgical manipulation, the incisions made during the procedure are closed to promote healing and restore the integrity of the oral cavity.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure coded as CPT® 21195 is indicated for various conditions affecting the mandible, particularly when surgical intervention is necessary to correct skeletal discrepancies or malocclusions. The following are specific indications for performing this procedure:

  • Jaw Deformities Conditions such as prognathism or retrognathism, where the jaw is positioned too far forward or backward, necessitating surgical correction.
  • Malocclusion Severe misalignment of the teeth and jaws that cannot be adequately addressed through orthodontic treatment alone.
  • Trauma Injuries to the mandible that result in fractures or dislocations requiring surgical reconstruction to restore function and aesthetics.
  • Congenital Anomalies Birth defects affecting the structure of the jaw that may require surgical intervention for proper function and appearance.

2. Procedure

The surgical procedure for CPT® Code 21195 involves several critical steps to ensure successful reconstruction of the mandibular rami and/or body:

  • Step 1: Anesthesia Administration The procedure begins with the administration of appropriate anesthesia to ensure the patient is comfortable and pain-free throughout the surgery. This may involve general anesthesia or local anesthesia with sedation, depending on the complexity of the case and the patient's needs.
  • Step 2: Incision Creation The surgeon makes a precise incision over the mandibular ramus, which is the vertical part of the mandible. This incision provides direct access to the bone and is carefully planned to minimize scarring and facilitate healing.
  • Step 3: Mandibular Separation Using specialized surgical instruments such as saws, drills, and osteotomes, the surgeon carefully separates the mandible along a predetermined line. This step is crucial for allowing the jaw to be repositioned effectively.
  • Step 4: Repositioning the Mandible Once the mandible is split, the surgeon moves the jaw forward into the desired position. This adjustment is made based on the specific anatomical and functional requirements of the patient, aiming to achieve optimal alignment and occlusion.
  • Step 5: Stabilization After repositioning, the mandible is held in place using wires. This method of stabilization is essential for maintaining the new position during the healing process.
  • Step 6: Closure of Incisions Finally, the surgeon carefully closes the incisions made during the procedure. This step is performed using sutures or other closure techniques to ensure proper healing and minimize the risk of infection.

3. Post-Procedure

After the completion of the procedure coded as CPT® 21195, patients typically require post-operative care to ensure proper healing and recovery. This may include pain management strategies, dietary modifications to accommodate the healing jaw, and instructions for oral hygiene to prevent infection. Patients are often advised to follow up with their healthcare provider to monitor the healing process and assess the stability of the mandible. Recovery time can vary based on individual factors, but patients should expect some swelling and discomfort in the initial days following surgery. Adhering to the post-operative care plan is crucial for achieving the best possible outcomes from the procedure.

Short Descr RECONST LWR JAW W/O FIXATION
Medium Descr RCNSTJ MNDBLR RAMI&/BODY SGTL SPLT W/O INT RGD
Long Descr Reconstruction of mandibular rami and/or body, sagittal split; without internal rigid 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) 2 - 150% payment adjustment 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) 0 - Co-surgeons not permitted for this procedure.
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 161 - Other OR therapeutic procedures on bone
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).
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.
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1991-01-01 Added First appearance in code book in 1991.
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