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Official Description

Arthrodesis, interphalangeal joint, with or without internal fixation; with autograft (includes obtaining graft)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Arthrodesis of an interphalangeal (IP) joint, as described by CPT® Code 26862, is a surgical procedure aimed at fusing the bones of the IP joint to alleviate pain and restore stability, particularly in cases of arthritis or joint instability. The procedure involves making an incision over the affected IP joint, allowing the surgeon to access the joint capsule. During the operation, the joint surfaces are carefully inspected, and any damaged articular cartilage is excised from the surfaces of the phalangeal bones. The articular surfaces are then smoothed and reshaped using a surgical bur, which prepares them for fusion by ensuring they fit together properly. In cases where additional support is necessary, internal fixation devices such as pins or wires may be employed to hold the joint in the correct position while the fusion process occurs. This procedure may also involve the use of an autograft, which is a bone graft harvested from the patient's own body, typically from the iliac crest. The harvesting process includes making a skin incision over the iliac crest, stripping the muscle to expose the bone surface, and obtaining either cortical or cancellous bone. The harvested bone is then shaped to fit the defect in the joint, or it may be morcellized and packed into the joint space to facilitate fusion. CPT® Code 26862 specifically refers to the fusion of a single IP joint using an autograft, while codes 26860 and 26861 are designated for fusions without grafting and for additional joints, respectively. This procedure is critical for patients suffering from debilitating joint conditions, as it aims to provide long-term relief and improved function of the affected digit.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 26862 is indicated for the following conditions:

  • Arthritis - A degenerative condition affecting the joint, leading to pain and reduced mobility.
  • Joint Instability - A condition where the joint cannot maintain its normal position, resulting in pain and dysfunction.

2. Procedure

The arthrodesis procedure for the interphalangeal joint involves several critical steps to ensure successful fusion and recovery:

  • Step 1: Incision - The surgeon begins by making an incision over the interphalangeal joint to gain access to the joint capsule. This incision is carefully placed to minimize damage to surrounding tissues.
  • Step 2: Joint Inspection - Once the joint is exposed, the joint capsule is incised, allowing the surgeon to inspect the joint surfaces for any damage or degeneration. This step is crucial for assessing the extent of the condition.
  • Step 3: Cartilage Excision - The articular cartilage, which may be damaged or diseased, is excised from the surfaces of the phalangeal bones. This removal is necessary to prepare the bones for fusion.
  • Step 4: Surface Preparation - The articular surfaces of the bones are smoothed and reshaped using a surgical bur. This preparation ensures that the surfaces fit together properly, promoting effective fusion.
  • Step 5: Bone Graft Harvesting - If an autograft is required, a separate incision is made over the iliac crest to harvest bone. The muscle is stripped away to expose the bone surface, and either cortical or cancellous bone is obtained.
  • Step 6: Graft Configuration - The harvested bone is then shaped to fit the defect in the joint. Alternatively, cancellous bone may be morcellized and packed into the joint space to facilitate fusion.
  • Step 7: Internal Fixation - Internal fixation devices, such as pins or wires, are used as needed to secure the bone graft and maintain the IP joint in the desired position during the healing process.
  • Step 8: Soft Tissue Repair - After the joint has been stabilized, the soft tissues are repaired in layers to ensure proper healing and minimize complications.
  • Step 9: Application of Cast or Splint - Finally, a cast or splint is applied to immobilize the joint and support the healing process.

3. Post-Procedure

Post-procedure care following an arthrodesis of the interphalangeal joint includes monitoring for signs of infection, managing pain, and ensuring proper immobilization of the joint. Patients are typically advised to keep the affected area elevated and to follow specific weight-bearing restrictions as directed by the surgeon. Rehabilitation may involve physical therapy to restore function and strength once the initial healing phase has passed. The expected recovery time can vary, but patients should anticipate a gradual return to normal activities as the joint fuses and heals properly.

Short Descr FUSION/GRAFT OF FINGER JOINT
Medium Descr ARTHRODESIS IPHAL JT W/WO INT FIXJ W/AUTOGRAFT
Long Descr Arthrodesis, interphalangeal joint, with or without internal fixation; with autograft (includes obtaining graft)
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) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
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 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 162 - Other OR therapeutic procedures on joints

This is a primary code that can be used with these additional add-on codes.

20705 Add-on Code MPFS Status: Active Code APC N Removal of drug-delivery device(s), intra-articular (List separately in addition to code for primary procedure)
26863 Addon Code MPFS Status: Active Code APC N ASC N1 Illustration for Code Arthrodesis, interphalangeal joint, with or without internal fixation; with autograft (includes obtaining graft), each additional joint (List separately in addition to code for primary procedure)
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.
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).
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.
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).
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
F1 Left hand, second digit
F2 Left hand, third digit
F3 Left hand, fourth digit
F4 Left hand, fifth digit
F5 Right hand, thumb
F6 Right hand, second digit
F7 Right hand, third digit
F8 Right hand, fourth digit
F9 Right hand, fifth digit
FA Left hand, thumb
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)
SG Ambulatory surgical center (asc) facility service
T1 Left foot, second digit
T2 Left foot, third digit
T6 Right foot, second digit
T7 Right foot, third digit
TA Left foot, great toe
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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Notes
2013-01-01 Changed Medium Descriptor changed.
Pre-1990 Added Code added.
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