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Official Description

Arthroplasty, ankle; with implant (total ankle)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Arthroplasty of the ankle, specifically referred to as total ankle arthroplasty, is a surgical procedure aimed at addressing degenerative changes in the ankle joint that arise from various conditions, including rheumatoid arthritis, osteoarthritis, and traumatic arthropathy. This procedure involves the replacement of damaged joint surfaces with an artificial implant, thereby restoring function and alleviating pain. The surgery begins with an incision made over the anterior aspect of the ankle joint, allowing access to the underlying structures. During the procedure, soft tissues are carefully dissected to expose the joint capsule, which is then incised to facilitate inspection of the joint structures. Any loose bodies, bone spurs, or inflamed tissue present within the joint are excised to prepare the area for the implant. Unlike the procedure described in CPT® Code 27700, which involves ankle arthroplasty without the use of an implant, CPT® Code 27702 specifically denotes the use of an implant to replace either the distal aspects of the tibia and fibula and the proximal aspect of the talus, or only the distal fibula and proximal talus. The surgical technique includes the use of cutting guides to ensure precise excision of bone, followed by the placement of trial implant components to evaluate fit before securing the permanent implant. This comprehensive approach aims to restore the normal biomechanics of the ankle joint, ultimately improving the patient's quality of life.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure of total ankle arthroplasty (CPT® Code 27702) is indicated for patients experiencing significant pain and functional limitations due to degenerative changes in the ankle joint. The specific conditions that may warrant this surgical intervention include:

  • Rheumatoid Arthritis - A chronic inflammatory disorder that affects the joints, leading to pain, swelling, and eventual joint damage.
  • Osteoarthritis - A degenerative joint disease characterized by the breakdown of cartilage, resulting in pain, stiffness, and decreased mobility.
  • Traumatic Arthropathy - Joint damage resulting from previous injuries or trauma to the ankle, which can lead to chronic pain and dysfunction.

2. Procedure

The total ankle arthroplasty procedure involves several critical steps to ensure successful implantation of the artificial joint. The steps are as follows:

  • Step 1: Incision and Exposure - The procedure begins with a surgical incision made over the anterior aspect of the ankle joint. This incision allows the surgeon to access the joint and surrounding structures. Soft tissues are meticulously dissected to expose the joint capsule, which is then incised to provide a clear view of the joint components.
  • Step 2: Inspection and Debridement - Once the joint is exposed, the surgeon inspects the joint structures for any loose bodies, bone spurs, or inflamed tissue. These unwanted materials are excised to prepare the joint for the implant. A total capsulectomy is performed, along with the excision of osteophytes and the release of lateral and medial talomalleolar joint spaces to ensure a clean surgical field.
  • Step 3: Bone Resection - A cutting guide is placed over the distal aspect of the tibia, and a portion of the bone is excised. This step may also involve the excision of a portion of the fibula. Following this, a cutting guide is positioned over the talus, and a portion of the talus is similarly resected to accommodate the implant.
  • Step 4: Drilling and Trial Implant Placement - After the bone has been resected, drilling guides are placed on the prepared bone surfaces, and fixation holes are drilled to facilitate the secure placement of the implant. Trial implant components are then inserted to evaluate the fit and alignment of the implant within the joint.
  • Step 5: Permanent Implant Placement - Once the fit of the trial components is confirmed, the permanent implant components are placed into the joint. These components are secured using bone screws and, if necessary, bone cement to ensure stability. Additionally, the tibiofibular joint may be fused to enhance the overall stability of the ankle.
  • Step 6: Closure - The surgical incision is then closed over a suction drain, which helps to manage any postoperative fluid accumulation and promotes healing.

3. Post-Procedure

After the total ankle arthroplasty procedure, patients can expect a recovery period that may involve pain management, physical therapy, and gradual weight-bearing activities. Postoperative care is crucial for ensuring proper healing and function of the new ankle joint. Patients are typically monitored for any signs of complications, such as infection or implant failure. Rehabilitation will focus on restoring range of motion, strength, and stability in the ankle, with the goal of returning to normal activities as soon as possible. Follow-up appointments are essential to assess the healing process and the performance of the implant.

Short Descr RECONSTRUCT ANKLE JOINT
Medium Descr ARTHROPLASTY ANKLE W/IMPLANT
Long Descr Arthroplasty, ankle; with implant (total ankle)
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 154 - Arthroplasty other than hip or knee
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
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.
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.
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).
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.
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).
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
GW Service not related to the hospice patient's terminal condition
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
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Pre-1990 Added Code added.
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