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Official Description

Osteoplasty, radius OR ulna; lengthening with autograft

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 25391 refers to osteoplasty of the radius or ulna, specifically focusing on lengthening the bone using an autograft. Osteoplasty is a surgical intervention aimed at reshaping or reconstructing bone structures. In this case, the procedure is performed on either the radius or ulna, which are the two long bones in the forearm. The goal of this surgery is to lengthen the bone, which may be necessary due to various conditions such as congenital deformities, trauma, or other orthopedic issues that result in a need for bone lengthening. Prior to the surgical intervention, the physician utilizes radiographic studies to precisely determine the locations for bone cuts, ensuring that the procedure is executed with accuracy. During the surgery, the bone is exposed, and specific cuts are made to facilitate the lengthening process. An autograft, typically harvested from the iliac crest, is used to fill the defect created by the bone distraction. This autograft serves as a biological scaffold that promotes healing and bone regeneration. The procedure may also involve the application of internal fixation devices, such as pins, screws, or plates, to maintain the proper alignment of the bone during the healing process. Alternatively, an external fixation device may be utilized to stabilize the bone. Overall, this procedure is a complex surgical technique that requires careful planning and execution to achieve the desired outcome of bone lengthening.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 25391 is indicated for various conditions that necessitate the lengthening of the radius or ulna. These indications may include:

  • Congenital Deformities - Conditions present at birth that affect the normal growth and development of the radius or ulna.
  • Trauma - Injuries that result in bone shortening or malalignment, requiring surgical intervention to restore proper length and function.
  • Bone Defects - Acquired conditions that lead to a loss of bone mass or structural integrity, necessitating lengthening to improve limb function.

2. Procedure

The procedure for CPT® Code 25391 involves several critical steps to achieve the desired lengthening of the radius or ulna. These steps include:

  • Step 1: Preoperative Planning - Prior to the surgical procedure, the physician conducts separately reportable radiographic studies to determine the precise locations for the bone cuts. This planning is essential to ensure that the lengthening is performed accurately and effectively.
  • Step 2: Exposure of the Bone - The surgical site is prepared, and the skin and underlying tissues are incised to expose the radius or ulna. This exposure allows the surgeon to access the bone directly for the necessary modifications.
  • Step 3: Bone Cuts and Distraction - Cuts are made in the bone at predetermined sites. The bone is then distracted, which involves separating the cut ends to create a gap that will be filled with the autograft.
  • Step 4: Harvesting the Autograft - An autograft is harvested from the iliac crest. A skin incision is made over the iliac crest, and the muscle is stripped away to expose the bone surface. Cortical and/or cancellous bone is then harvested to be used in the lengthening procedure.
  • Step 5: Graft Configuration and Application - The harvested bone is shaped and sized appropriately to fit the defect created by the distraction. Cancellous bone may be morcellized and packed into the defect to promote healing.
  • Step 6: Internal Fixation - Pins, screws, a plate and screw device, or other types of internal fixation are applied as needed to secure the cut edges of the bone in anatomical alignment. This stabilization is crucial for the healing process.
  • Step 7: External Fixation (if applicable) - Alternatively, a separately reportable external fixation device may be applied to maintain the proper alignment of the bone during the healing phase.

3. Post-Procedure

After the completion of the osteoplasty procedure, the patient will require specific post-operative care to ensure proper healing and recovery. This may include monitoring for any signs of infection, managing pain, and ensuring that the surgical site remains clean and dry. The patient may also need to follow a rehabilitation program that includes physical therapy to restore function and strength to the affected limb. Follow-up appointments will be necessary to assess the healing process and to make any adjustments to the fixation devices if used. The expected recovery time can vary based on individual factors, including the extent of the procedure and the patient's overall health.

Short Descr LENGTHEN RADIUS OR ULNA
Medium Descr OSTEOPLASTY RADIUS/ULNA LENGTHENING W/AUTOGRAFT
Long Descr Osteoplasty, radius OR ulna; lengthening with autograft
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) P5B - Ambulatory procedures - musculoskeletal
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).
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.
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure 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)
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