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Official Description

Open treatment of medial malleolus fracture, includes internal fixation, when performed

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The medial malleolus is a critical anatomical structure located at the distal end of the tibia, which is the larger of the two bones in the lower leg. This bony prominence is situated on the inner aspect of the ankle and plays a vital role in the stability and function of the ankle joint, as it articulates with the talus bone. A fracture of the medial malleolus can occur due to various traumatic events, such as falls or sports injuries, leading to pain, swelling, and impaired mobility. The open treatment of a medial malleolus fracture, as described by CPT® Code 27766, involves a surgical procedure where an incision is made directly over the fracture site. This allows the surgeon to access the fractured bone, clear any debris, and manipulate the fracture back into its proper alignment. If necessary, internal fixation devices, such as screws or a plate and screw system, are utilized to stabilize the fracture and promote healing. Following the fixation, the surgical site is thoroughly irrigated to reduce the risk of infection, and the incisions are then closed to complete the procedure. This comprehensive approach ensures that the fracture is properly treated, facilitating recovery and restoring function to the ankle joint.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The open treatment of a medial malleolus fracture is indicated in the following scenarios:

  • Fracture of the Medial Malleolus This procedure is performed when there is a fracture of the medial malleolus, which may result from trauma or injury.
  • Displacement of the Fracture Indicated when the fracture is displaced, requiring surgical intervention to realign the bone fragments.
  • Inadequate Healing If conservative treatment methods have failed to achieve adequate healing or alignment of the fracture.

2. Procedure

The procedure for the open treatment of a medial malleolus fracture involves several critical steps to ensure proper alignment and stabilization of the fracture:

  • Incision An incision is made over the fracture site to provide direct access to the medial malleolus. This incision is carefully planned to minimize damage to surrounding tissues and facilitate optimal exposure of the fracture.
  • Exposure and Debridement Once the incision is made, the surgeon exposes the fracture site and clears any debris or foreign material that may be present. This step is essential to reduce the risk of infection and ensure a clean surgical field.
  • Reduction of the Fracture The fractured bone is then manipulated back into its proper anatomical position, a process known as reduction. This step is crucial for restoring the normal alignment of the ankle joint and ensuring proper healing.
  • Internal Fixation If deemed necessary, internal fixation devices such as screws or a plate and screw system are applied to stabilize the fracture. This fixation helps maintain the alignment of the bone during the healing process.
  • Wound Irrigation After the fixation is in place, the surgical site is thoroughly irrigated to remove any remaining debris and reduce the risk of postoperative infection.
  • Closure of Incisions Finally, the incisions are closed using sutures or staples, ensuring that the surgical site is properly sealed to promote healing.

3. Post-Procedure

Post-procedure care following the open treatment of a medial malleolus fracture typically includes monitoring for signs of infection, managing pain, and ensuring proper immobilization of the ankle. Patients may be advised to keep the affected limb elevated and to follow specific weight-bearing restrictions as directed by their healthcare provider. Rehabilitation exercises may be introduced gradually to restore range of motion and strength as healing progresses. Follow-up appointments are essential to assess the healing process and to make any necessary adjustments to the treatment plan.

Short Descr OPTX MEDIAL ANKLE FX
Medium Descr OPEN TREATMENT MEDIAL MALLEOLUS FRACTURE
Long Descr Open treatment of medial malleolus fracture, includes internal fixation, when performed
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) 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 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) P5B - Ambulatory procedures - musculoskeletal
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)
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).
53 Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) 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.
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.
62 Two surgeons: when 2 surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62 to the procedure code and any associated add-on code(s) for that procedure as long as both surgeons continue to work together as primary surgeons. each surgeon should report the co-surgery once using the same procedure code. if additional procedure(s) (including add-on procedure(s) are performed during the same surgical session, separate code(s) may also be reported with modifier 62 added. note: if a co-surgeon acts as an assistant in the performance of additional procedure(s), other than those reported with the modifier 62, during the same surgical session, those services may be reported using separate procedure code(s) with modifier 80 or modifier 82 added, as appropriate.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
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).
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).
AG Primary physician
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CR Catastrophe/disaster related
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)
QJ Services/items provided to a prisoner or patient in state or local custody, however the state or local government, as applicable, meets the requirements in 42 cfr 411.4 (b)
SG Ambulatory surgical center (asc) facility service
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
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
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2008-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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