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Official Description

Repair of extensor tendon, distal insertion, primary or secondary; with free graft (includes obtaining graft)

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 26434 involves the surgical repair of the extensor tendon at its distal insertion, utilizing a free graft. This type of injury often results in a condition known as mallet finger, characterized by the inability to straighten the affected finger due to a flexion deformity at the distal interphalangeal joint. Such injuries typically occur from a blunt force impact to the fingertip, leading to a tear or rupture of the tendon. In some instances, the injury may also involve a fragment of bone being avulsed along with the tendon. The timing of the repair is critical; primary repairs are generally conducted within 24 hours post-injury, while secondary repairs are indicated for cases where the repair is performed more than two weeks after the injury, particularly if there is significant contamination of the wound. The surgical approach involves making a dorsal incision to expose the tendon, with careful dissection of surrounding soft tissues to protect vital neurovascular structures. The surgeon locates the distal and proximal ends of the ruptured tendon, which may necessitate an additional incision. In cases where a bone fragment is involved, it may be secured to the distal phalanx using pins or screws. The unique aspect of CPT® Code 26434 is the use of a free graft, which is harvested from either the forearm or leg, and is then sutured to the proximal end of the ruptured tendon, with the distal end secured to the tendon or the distal phalanx, ensuring proper alignment and function post-repair.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 26434 is indicated for the repair of injuries to the distal insertion of the extensor tendon, particularly in cases where there is a significant rupture or tear that may lead to mallet finger. The following conditions warrant this surgical intervention:

  • Mallet Finger - A condition resulting from an injury to the distal extensor tendon insertion, leading to a flexion deformity of the distal interphalangeal joint.
  • Tendon Rupture - A complete tear of the extensor tendon due to blunt force trauma, which may require surgical repair to restore function.
  • Bone Avulsion - Instances where a piece of bone is pulled away with the tendon, necessitating fixation to the distal phalanx during repair.
  • Delayed Repair - Situations where primary repair is not feasible due to the timing of the injury, particularly if more than two weeks have elapsed since the initial injury.

2. Procedure

The surgical procedure for CPT® Code 26434 involves several critical steps to ensure effective repair of the extensor tendon. The following outlines the procedural steps:

  • Step 1: Incision and Exposure - A dorsal incision is made over the site of the tendon injury to provide access to the extensor tendon. Care is taken to dissect the surrounding soft tissues while protecting the neurovascular structures that may be present in the area.
  • Step 2: Identification of Tendon Ends - The surgeon locates the distal and proximal ends of the ruptured tendon. In some cases, this may require a separate incision to adequately visualize and access the tendon ends for repair.
  • Step 3: Graft Harvesting - A tendon graft is harvested from a donor site, typically from the forearm or leg. This graft will be used to facilitate the repair of the ruptured tendon.
  • Step 4: Graft Attachment - The harvested tendon graft is sutured to the proximal end of the ruptured tendon. This step is crucial for restoring continuity and function to the tendon.
  • Step 5: Securing the Graft - The distal end of the graft is then secured either to the distal end of the tendon or directly to the distal phalanx using pins or screws, ensuring stability and proper alignment during the healing process.

3. Post-Procedure

After the completion of the procedure, post-operative care is essential for optimal recovery. Patients are typically monitored for any signs of complications, such as infection or improper healing. Rehabilitation may involve physical therapy to restore range of motion and strength in the affected finger. The expected recovery time can vary based on the extent of the injury and the individual’s healing response. Follow-up appointments are necessary to assess the healing process and to determine when the patient can safely resume normal activities.

Short Descr REPAIR/GRAFT FINGER TENDON
Medium Descr REPAIR EXTENSOR TENDON DISTAL INSERTION W/GRAFT
Long Descr Repair of extensor tendon, distal insertion, primary or secondary; with free graft (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) 0 - Co-surgeons not permitted for this procedure.
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 2
CCS Clinical Classification 160 - Other therapeutic procedures on muscles and tendons
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.)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
F2 Left hand, third digit
F3 Left hand, fourth digit
F4 Left hand, fifth digit
F7 Right hand, third digit
F8 Right hand, fourth digit
F9 Right hand, fifth digit
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)
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