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Official Description

Arrest, epiphyseal (epiphysiodesis), open; distal fibula

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Epiphyseal arrest, also known as epiphysiodesis, is a surgical procedure aimed at addressing discrepancies in bone length, particularly between the lower legs or between the tibia and fibula. The term "epiphysis" refers to the growth plate, which is a critical area of developing bone tissue that influences the length and shape of the bone as a child grows. During this procedure, a surgical incision is made over the distal aspect of the tibia and/or fibula, allowing access to the underlying structures. Careful dissection of the soft tissues is performed to protect vital blood vessels and nerves in the area. Once the distal tibia and/or fibula are adequately exposed, various devices such as Blount staples, transphyseal screws, or a plate and screw device are strategically placed within the epiphysis. These devices serve to temporarily halt the growth of the bone, thereby correcting the length discrepancy. It is important to note that specific CPT® codes are designated for different anatomical sites: CPT® Code 27730 is used for epiphyseal arrest of the distal tibia, while CPT® Code 27732 is specifically for the distal fibula. Additionally, CPT® Code 27734 is applicable when the procedure is performed on both the distal tibia and fibula.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure of epiphyseal arrest is indicated for specific conditions related to bone growth discrepancies. These include:

  • Bone Length Discrepancy The primary indication for performing epiphyseal arrest is to correct a significant difference in length between the lower legs, specifically between the tibia and fibula. This discrepancy can lead to functional impairments and may require surgical intervention to ensure proper alignment and function.

2. Procedure

The procedure of epiphyseal arrest involves several critical steps to ensure successful outcomes. These steps include:

  • Step 1: Incision The surgeon begins by making a precise incision over the distal aspect of the tibia and/or fibula. This incision allows access to the underlying bone structures while minimizing damage to surrounding tissues.
  • Step 2: Dissection Following the incision, the surgeon carefully dissects the soft tissues to expose the distal tibia and/or fibula. During this step, it is crucial to protect the surrounding blood vessels and nerves to prevent complications.
  • Step 3: Exposure of Bone Once the soft tissues are adequately dissected, the distal ends of the tibia and/or fibula are exposed. This exposure is necessary for the subsequent placement of devices that will arrest bone growth.
  • Step 4: Placement of Devices The surgeon then strategically places devices such as Blount staples, transphyseal screws, or a plate and screw device into the epiphysis of the distal tibia and/or fibula. These devices are designed to temporarily halt the growth of the bone, thereby addressing the length discrepancy.

3. Post-Procedure

After the epiphyseal arrest procedure, patients typically require careful monitoring and follow-up care. Post-procedure care may include pain management, wound care, and restrictions on weight-bearing activities to ensure proper healing. The expected recovery period can vary depending on the individual case and the extent of the procedure performed. Regular follow-up appointments are essential to assess the healing process and to determine when it is appropriate to resume normal activities.

Short Descr REPAIR OF FIBULA EPIPHYSIS
Medium Descr ARREST EPIPHYSEAL OPEN DISTAL FIBULA
Long Descr Arrest, epiphyseal (epiphysiodesis), open; distal fibula
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) 1 - Statutory payment restriction for assistants at surgery applies 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 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) P3D - Major procedure, orthopedic - other
MUE 1
CCS Clinical Classification 161 - Other OR therapeutic procedures on bone
Date
Action
Notes
2003-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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