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Official Description

Arrest, epiphyseal, any method (eg, epiphysiodesis); combined distal femur, proximal tibia and fibula

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Epiphyseal arrest, also known as growth plate arrest, is a surgical procedure aimed at addressing discrepancies in bone length, particularly between the femurs or between the tibia and fibula. The epiphysis, commonly referred to as the growth plate, is a critical area in long bone development where new bone tissue is formed. This procedure is typically indicated when there is a significant difference in length between the bones, which can lead to functional impairments or aesthetic concerns. During the surgery, an incision is made over the distal aspect of the femur and/or the proximal aspect of the tibia and/or fibula. Careful dissection of the surrounding soft tissues is performed to avoid damaging vital blood vessels and nerves. Once the distal femur and/or proximal tibia and/or fibula are adequately exposed, various devices such as Blount staples, transphyseal screws, or a plate and screw device are strategically placed in the epiphysis. These devices serve to temporarily halt the growth of the bone, thereby allowing for the correction of the length discrepancy. It is important to note that specific CPT codes are designated for different combinations of epiphyseal arrest procedures: CPT® Code 27475 is used for epiphyseal arrest of the distal femur, CPT® Code 27477 is for the proximal tibia and fibula, and CPT® Code 27479 is utilized when the procedure involves both the distal femur and the proximal tibia and fibula.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

Bone Length Discrepancy Epiphyseal arrest is indicated for the treatment of significant bone length discrepancies between the femurs or between the tibia and fibula, which may lead to functional impairments or aesthetic concerns.

2. Procedure

Step 1: Incision The procedure begins with the surgeon making an incision over the distal aspect of the femur and/or the proximal aspect of the tibia and/or fibula. This incision allows access to the underlying structures necessary for the procedure.

Step 2: Dissection Following the incision, the surgeon carefully dissects the soft tissues surrounding the targeted bones. This step is crucial as it involves protecting vital blood vessels and nerves that are located in proximity to the surgical site, ensuring that they remain intact throughout the procedure.

Step 3: Exposure of Bones Once the soft tissues are adequately dissected, the distal femur and/or proximal tibia and/or fibula are exposed. This exposure is essential for the subsequent placement of the devices that will facilitate the epiphyseal arrest.

Step 4: Placement of Devices The final step involves the strategic placement of devices such as Blount staples, transphyseal screws, or a plate and screw device into the epiphysis of the distal femur and/or proximal tibia and/or fibula. These devices are designed to temporarily arrest bone growth, thereby addressing the length discrepancy effectively.

3. Post-Procedure

Post-procedure care typically involves monitoring the surgical site for any signs of infection or complications. Patients may be advised on weight-bearing restrictions and rehabilitation protocols to ensure proper healing and recovery. Follow-up appointments are essential to assess the effectiveness of the epiphyseal arrest and to monitor the growth of the remaining bone structures.

Short Descr SURGERY TO STOP LEG GROWTH
Medium Descr ARRST EPIPHYSL CMBN DSTL FEMUR PROX TIBFIB
Long Descr Arrest, epiphyseal, any method (eg, epiphysiodesis); combined distal femur, proximal tibia and 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) 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 Non office-based surgical procedure added in CY 2008 or later; 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
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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)
Date
Action
Notes
2002-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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