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Official Description

Open treatment of ankle dislocation, with or without percutaneous skeletal fixation; without repair or internal fixation

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Ankle dislocation is a significant injury characterized by the displacement of the bones forming the ankle joint, which can occur without any accompanying fractures. This type of dislocation is relatively uncommon but can lead to serious complications, including neurovascular impairment, if not promptly identified and treated. The procedure described by CPT® Code 27846 involves the open treatment of such an ankle dislocation, which may include the use of percutaneous skeletal fixation. During this surgical intervention, a skin incision is made over the ankle joint to allow access to the underlying structures. The surgeon carefully dissects the soft tissues to expose the joint while taking precautions to protect the neurovascular structures that are critical for limb function. Once the joint capsule and ligaments are visualized, they are assessed for integrity. If they are found to be intact, the dislocation is reduced using radiologic guidance, which is a separately reportable service. To stabilize the ankle joint during the healing process, pins may be inserted through the skin and across the joint. This procedure is essential for ensuring proper alignment and stability of the ankle as the surrounding soft tissues recover from the injury.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The open treatment of ankle dislocation, as described by CPT® Code 27846, is indicated for patients presenting with an ankle dislocation that does not involve a concomitant fracture. This procedure is particularly necessary when there is a risk of neurovascular impairment due to the dislocation, which can occur if the injury is not recognized and treated promptly. The indications for this procedure may include:

  • Ankle Dislocation The primary indication for this procedure is the presence of an ankle dislocation without associated fractures, which requires surgical intervention to restore proper alignment.
  • Neurovascular Compromise If there are signs of neurovascular impairment, such as altered sensation or diminished blood flow to the foot, immediate treatment is warranted to prevent further complications.

2. Procedure

The procedure for the open treatment of ankle dislocation involves several critical steps to ensure effective reduction and stabilization of the joint. The steps are as follows:

  • Step 1: Incision and Exposure A skin incision is made over the ankle joint to provide access to the underlying structures. The surgeon carefully dissects the soft tissues to expose the joint while ensuring that neurovascular structures are isolated and protected throughout the procedure.
  • Step 2: Inspection of Joint Structures Once the joint is exposed, the surgeon inspects the joint capsule and ligaments to assess their integrity. It is crucial to determine whether these structures are intact, as this will influence the subsequent steps of the procedure.
  • Step 3: Reduction of Dislocation Using radiologic guidance, which is a separately reportable service, the surgeon proceeds to reduce the dislocated ankle joint. This step is essential for restoring the normal alignment of the bones.
  • Step 4: Stabilization After the dislocation is reduced, the surgeon may place pins through the skin and across the ankle joint to stabilize it. This stabilization is vital to allow the soft tissue structures to heal properly while maintaining the joint's alignment.

3. Post-Procedure

Following the open treatment of an ankle dislocation, patients can expect specific post-procedure care and considerations. The stabilization provided by the pins will help maintain the joint's position as the surrounding soft tissues heal. Patients may be advised to limit weight-bearing activities on the affected ankle for a specified period to promote healing and prevent complications. Regular follow-up appointments will be necessary to monitor the healing process and assess the need for any further interventions. Additionally, physical therapy may be recommended to restore range of motion and strength once the initial healing phase is complete.

Short Descr TREAT ANKLE DISLOCATION
Medium Descr OPTX ANKLE DISLOCATION W/O REPAIR/INTERNAL FIXJ
Long Descr Open treatment of ankle dislocation, with or without percutaneous skeletal fixation; without repair or internal 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) 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 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) P5B - Ambulatory procedures - musculoskeletal
MUE 1
CCS Clinical Classification 147 - Treatment, fracture or dislocation of lower extremity (other than hip or femur)
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.
50 Bilateral procedure: unless otherwise identified in the listings, bilateral procedures that are performed at the same session, should be identified by adding modifier 50 to the appropriate 5 digit code. note: this modifier should not be appended to designated "add-on" codes (see appendix d).
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).
54 Surgical care only: when 1 physician or other qualified health care professional performs a surgical procedure and another provides preoperative and/or postoperative management, surgical services may be identified by adding modifier 54 to the usual procedure number.
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.
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).
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)
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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Pre-1990 Added Code added.
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