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Official Description

Repair of collateral ligament, metacarpophalangeal or interphalangeal joint

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 26540 involves the surgical repair of the collateral ligament located at either the metacarpophalangeal (MCP) joint or the interphalangeal (IP) joint. The collateral ligaments are critical structures that provide stability to these joints, and their injury can result from traumatic events such as lacerations or ruptures. In cases where an open wound is present, the surgical approach includes exploration of the wound, removal of any devitalized tissue, and extraction of foreign materials to ensure a clean surgical field. For closed injuries, a surgical incision is made on the volar aspect of the MCP joint, allowing access to the underlying structures. The procedure requires careful identification and protection of neurovascular bundles to prevent damage during the repair process. The injured collateral ligament is then exposed, and if it has been completely severed, it is meticulously repaired using sutures. In instances where the ligament has ruptured at its bony attachment, reattachment is performed using pins or bone anchors to restore its function. For injuries at the IP joint, a dorsal incision is utilized, and similar repair techniques are employed to ensure the integrity of the ligament and joint stability. The final step involves closing the surgical wound in layers to promote optimal healing and recovery.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The repair of the collateral ligament of the metacarpophalangeal (MCP) or interphalangeal (IP) joint is indicated for the following conditions:

  • Traumatic Injury The procedure is performed to address injuries such as lacerations or ruptures of the collateral ligament, which can compromise joint stability and function.

2. Procedure

The surgical procedure for the repair of the collateral ligament involves several critical steps to ensure effective treatment of the injury.

  • Step 1: Wound Exploration In cases where an open wound is present, the surgeon begins by exploring the wound to assess the extent of the injury. This includes debriding any devitalized tissue and removing foreign materials to create a clean surgical environment.
  • Step 2: Incision for Closed Injuries For closed injuries, an incision is made on the volar aspect of the affected MCP joint. This approach allows the surgeon to access the underlying structures while minimizing additional trauma to the surrounding tissues.
  • Step 3: Identification of Neurovascular Bundles During the procedure, the surgeon carefully identifies and protects the neurovascular bundles that run adjacent to the joint. This step is crucial to prevent any inadvertent damage to these important structures during the repair process.
  • Step 4: Exposure of the Collateral Ligament The injured collateral ligament is then exposed. If the ligament has been completely severed, the surgeon prepares to repair it using sutures. If the ligament has ruptured at its attachment to the bone, the surgeon will prepare to reattach it using a pin or bone anchor.
  • Step 5: Repair of the Ligament The repair involves suturing the severed ligament back together or reattaching it to the bone with the appropriate fixation device, ensuring that the ligament is securely positioned to restore joint stability.
  • Step 6: Closure of the Wound After the ligament repair is completed, the overlying traumatic or surgical wound is closed in layers. This layered closure technique promotes optimal healing and reduces the risk of complications.
  • Step 7: Dorsal Incision for IP Joint Injuries In cases where the injury occurs at the IP joint, a dorsal incision is made over the affected joint. The collateral ligament is then exposed and repaired using similar techniques as described for the MCP joint.

3. Post-Procedure

Post-procedure care typically involves monitoring the surgical site for signs of infection and ensuring proper healing. Patients may be advised on immobilization of the joint to facilitate recovery and may require physical therapy to restore function and strength following the repair. Follow-up appointments are essential to assess the healing process and to determine when the patient can safely resume normal activities.

Short Descr REPAIR HAND JOINT
Medium Descr RPR COLTRL LIGM MTCARPHLNGL/IPHAL JT
Long Descr Repair of collateral ligament, metacarpophalangeal or interphalangeal joint
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) 0 - 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 4
CCS Clinical Classification 162 - Other OR therapeutic procedures on joints
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
F5 Right hand, thumb
FA Left hand, thumb
LT Left side (used to identify procedures performed on the left side of the body)
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).
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
F1 Left hand, second digit
F2 Left hand, third digit
F3 Left hand, fourth digit
F4 Left hand, fifth digit
F6 Right hand, second 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
RT Right side (used to identify procedures performed on the right side of the body)
SG Ambulatory surgical center (asc) facility service
T6 Right foot, second digit
TA Left foot, great toe
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
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Pre-1990 Added Code added.
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