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Official Description

Arthrodesis, tibiofibular joint, proximal or distal

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 27871 refers to arthrodesis of the tibiofibular joint, which can occur at either the proximal or distal location. The tibiofibular joint consists of two distinct joints: the proximal tibiofibular joint, located at the back and side of the knee, and the distal tibiofibular joint, situated near the ankle. The proximal joint is classified as a synovial joint, characterized by its smooth surfaces covered with hyaline cartilage or fibrocartilage, a joint cavity filled with synovial fluid, and a surrounding joint capsule supported by ligaments. In contrast, the distal tibiofibular joint is a syndesmosis, which is a fibrous joint held together by ligaments, including the interosseous membrane and three specific ligaments: anterior, interosseous, and tibiofibular. During the arthrodesis procedure, the surgeon makes an incision either just below the knee for the proximal joint or at the ankle for the distal joint. The surgical approach involves careful dissection of the soft tissues to expose the joint. Once exposed, the articular cartilage from both the tibia and fibula is removed to facilitate the fusion of the bones. Internal fixation devices are then applied to stabilize the bones in their new position, promoting the healing process and ensuring that the bones fuse together effectively. After the procedure, the soft tissues and skin are meticulously closed in layers, and the leg is immobilized using a cast or splint to support recovery and maintain the alignment of the fused joint.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure of arthrodesis of the tibiofibular joint is indicated for various conditions that may compromise the stability and function of the joint. These indications include:

  • Joint Instability: Conditions that lead to excessive movement or instability of the tibiofibular joint may necessitate surgical intervention to restore stability.
  • Severe Arthritis: Degenerative joint diseases, such as osteoarthritis or rheumatoid arthritis, can cause significant pain and dysfunction, making arthrodesis a viable option for pain relief and improved function.
  • Fractures: Complex fractures involving the tibiofibular joint that do not heal properly or result in malalignment may require arthrodesis to ensure proper healing and joint function.
  • Infection: Chronic infections affecting the joint may necessitate arthrodesis as a means to eliminate the source of infection and restore joint integrity.

2. Procedure

The arthrodesis procedure for the tibiofibular joint involves several critical steps to ensure successful fusion of the bones. The following procedural steps are typically followed:

  • Step 1: The surgeon begins by making an incision at the appropriate location, either just below the knee for the proximal tibiofibular joint or at the ankle for the distal tibiofibular joint. This incision allows access to the joint while minimizing damage to surrounding tissues.
  • Step 2: Once the incision is made, the surgeon carefully dissects the soft tissues to expose the tibiofibular joint. This step is crucial for visualizing the joint and preparing it for fusion.
  • Step 3: After exposing the joint, the surgeon proceeds to excise the articular cartilage from both the tibia and fibula. This removal is essential as it prepares the bone surfaces for direct contact, facilitating the fusion process.
  • Step 4: Following the excision of cartilage, internal fixation devices, such as plates or screws, are applied to stabilize the tibia and fibula in their new position. This fixation is vital to ensure that the bones remain aligned during the healing process.
  • Step 5: Once the fixation is in place, the surgeon meticulously closes the overlying soft tissues and skin in layers. This layered closure helps to promote optimal healing and reduces the risk of complications.
  • Step 6: Finally, the leg is immobilized using a cast or splint to provide support and prevent movement at the joint site, which is critical for successful bone fusion.

3. Post-Procedure

After the arthrodesis procedure, patients can expect a recovery period that may vary depending on individual circumstances and the extent of the surgery. Post-procedure care typically includes monitoring for signs of infection, managing pain, and ensuring proper immobilization of the leg. Patients are often advised to keep the affected limb elevated and to follow specific weight-bearing restrictions as directed by their healthcare provider. Rehabilitation may involve physical therapy to restore mobility and strength once the initial healing phase has passed. Regular follow-up appointments are essential to assess the progress of bone fusion and to make any necessary adjustments to the treatment plan.

Short Descr FUSION OF TIBIOFIBULAR JOINT
Medium Descr ARTHRODESIS TIBIOFIBULAR JOINT PROXIMAL/DISTAL
Long Descr Arthrodesis, tibiofibular joint, proximal or distal
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) 1 - 150% payment adjustment for bilateral procedures applies.
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 162 - Other OR therapeutic procedures on joints

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

20705 Add-on Code MPFS Status: Active Code APC N Removal of drug-delivery device(s), intra-articular (List separately in addition to code for primary procedure)
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.
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.
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)
SG Ambulatory surgical center (asc) facility service
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
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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