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Official Description

Open treatment of trimalleolar ankle fracture, includes internal fixation, when performed, medial and/or lateral malleolus; without fixation of posterior lip

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A trimalleolar ankle fracture is a complex injury that involves all three malleoli: the lateral malleolus, which is the bony prominence on the outer side of the ankle formed by the distal fibula; the medial malleolus, located at the distal end of the tibia and forming the inner aspect of the ankle; and the posterior malleolus, also known as the posterior lip, which is the bony process at the back of the tibia. The open treatment of this type of fracture, coded as CPT® 27822, includes the necessary internal fixation when performed, specifically addressing the medial and/or lateral malleolus, while noting that fixation of the posterior lip is not included in this code. The procedure typically begins with a lateral incision over the fracture site to access the lateral malleolus, ensuring that the branches of the superficial peroneal and sural nerves are protected during dissection. The periosteum is elevated to expose the fracture, which is then cleared of debris. The fracture is reduced and maintained using a bone clamp, with radiographic checks to confirm proper alignment. If internal fixation is indicated, a guidewire is inserted through the fracture site, followed by the application of a fixation device, such as a plate and screws. A second incision may be made over the medial malleolus to similarly expose and treat that area, with the possibility that open reduction of one malleolus may lead to spontaneous reduction of the other. This procedure is critical for restoring stability and function to the ankle joint, allowing for proper healing and recovery.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The open treatment of a trimalleolar ankle fracture is indicated for patients presenting with the following conditions:

  • Trimalleolar Ankle Fracture A fracture involving the lateral, medial, and posterior malleoli, which may result from trauma or injury.
  • Instability of the Ankle Joint When the fracture leads to instability that cannot be managed conservatively.
  • Displacement of Fracture Fragments When the fracture fragments are displaced and require surgical intervention to restore proper alignment.

2. Procedure

The procedure for the open treatment of a trimalleolar ankle fracture involves several critical steps to ensure proper repair and stabilization of the fracture.

  • Step 1: Incision and Exposure A lateral incision is made over the fracture site of the lateral malleolus. Care is taken to isolate and protect the branches of the superficial peroneal and sural nerves during dissection. The dissection continues until the periosteum is elevated, allowing for direct access to the fracture site, which is then cleared of any debris.
  • Step 2: Fracture Reduction Once the fracture site is exposed, the fracture is reduced and maintained using a bone clamp. Radiographic imaging is performed to check the reduction and ensure proper alignment of the fracture fragments.
  • Step 3: Internal Fixation (if required) If internal fixation is deemed necessary, a guidewire is inserted through the fracture site. Following this, internal fixation devices, such as a plate and screw system, are applied to stabilize the fracture.
  • Step 4: Medial Malleolus Treatment A second incision is made over the medial malleolus. This area is similarly exposed and cleared of debris, and the fracture is reduced. Internal fixation may also be applied to the medial malleolus if needed.
  • Step 5: Evaluation of Spontaneous Reduction It is important to note that open reduction of either the lateral or medial malleolus may lead to spontaneous reduction of the other malleolus, potentially negating the need for open reduction on both sides.
  • Step 6: Posterior Malleolus Treatment (if applicable) If the posterior lip requires treatment, the incision over the lateral malleolus is extended posteriorly to expose the posterior ankle joint. The posterior lip is then reduced, and a temporary guide is placed to confirm anatomic reduction radiographically. Internal fixation, such as compression screws or a plate and screw device, is applied as necessary.

3. Post-Procedure

Post-procedure care for patients who have undergone open treatment of a trimalleolar ankle fracture typically includes monitoring for signs of complications, such as infection or improper healing. Patients may be advised to keep the affected limb elevated and immobilized to promote healing. Follow-up appointments are essential to assess the healing process through radiographic imaging and to determine when weight-bearing activities can safely resume. Rehabilitation may be necessary to restore range of motion and strength in the ankle joint following the removal of any fixation devices.

Short Descr TREATMENT OF ANKLE FRACTURE
Medium Descr OPEN TX TRIMALLEOLAR ANKLE FX W/O FIXJ PST LIP
Long Descr Open treatment of trimalleolar ankle fracture, includes internal fixation, when performed, medial and/or lateral malleolus; without fixation of posterior lip
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 147 - Treatment, fracture or dislocation of lower extremity (other than hip or femur)
RT Right side (used to identify procedures performed on the right side of the body)
LT Left side (used to identify procedures performed on the left side of the body)
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
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.
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).
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).
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.
55 Postoperative management only: when 1 physician or other qualified health care professional performed the postoperative management and another performed the surgical procedure, the postoperative component may be identified by adding modifier 55 to the usual procedure number.
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.
73 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure prior to the administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may cancel a surgical or diagnostic procedure subsequent to the patient's surgical preparation (including sedation when provided, and being taken to the room where the procedure is to be performed), but prior to the administration of anesthesia (local, regional block(s) or general). under these circumstances, the intended service that is prepared for but cancelled can be reported by its usual procedure number and the addition of modifier 73. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
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).
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
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).
95 Synchronous telemedicine service rendered via a real-time interactive audio and video telecommunications system: synchronous telemedicine service is defined as a real-time interaction between a physician or other qualified health care professional and a patient who is located at a distant site from the physician or other qualified health care professional. the totality of the communication of information exchanged between the physician or other qualified health care professional and the patient during the course of the synchronous telemedicine service must be of an amount and nature that would be sufficient to meet the key components and/or requirements of the same service when rendered via a face-to-face interaction. modifier 95 may only be appended to the services listed in appendix p. appendix p is the list of cpt codes for services that are typically performed face-to-face, but may be rendered via a real-time (synchronous) interactive audio and video telecommunications system.
AG Primary physician
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
CR Catastrophe/disaster related
ET Emergency services
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GW Service not related to the hospice patient's terminal condition
GY Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
SG Ambulatory surgical center (asc) facility service
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
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
Date
Action
Notes
2008-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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