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Official Description

Amputation, metacarpal, with finger or thumb (ray amputation), single, with or without interosseous transfer

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 26910 refers to the surgical procedure known as amputation of a metacarpal, which may involve the removal of an entire finger or thumb, commonly referred to as a ray amputation. This procedure is typically indicated in cases of severe trauma, infection, or the presence of a malignant tumor affecting the finger or thumb. A ray amputation entails the excision of a portion of the metacarpal bone, which is the long bone in the hand that supports the finger or thumb. The surgical approach involves making a V-shaped incision over the carpometacarpal joint, which is the joint connecting the metacarpal bone to the wrist. The incision is extended down to the distal aspect of the metacarpal bone of the affected digit. During the procedure, the surgeon carefully dissects the soft tissues to expose the distal metacarpal bone, ensuring that tendons are appropriately managed—either detached or divided and then reattached to the remaining metacarpal bone as necessary. Additionally, digital nerves are divided, and their ends may be transferred to the interosseous space to minimize the risk of neuroma formation, which can occur when nerve endings are left exposed. Blood vessels are also ligated and divided to control bleeding. Finally, a specialized bone saw is utilized to cut the metacarpal bone at the predetermined level, after which the soft tissues are rearranged to adequately cover the exposed bone, and the overlying soft tissues are meticulously closed in layers to promote optimal healing.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 26910 is indicated for specific medical conditions that necessitate the amputation of a metacarpal, which may include:

  • Severe Trauma: Significant injuries to the finger or thumb that cannot be repaired or salvaged may require amputation to prevent further complications.
  • Infection: In cases where an infection is present and has progressed to a level that threatens the health of the patient or cannot be controlled through other means, amputation may be necessary.
  • Malignant Tumor: The presence of cancerous growths in the finger or thumb that necessitate removal to ensure complete excision of the tumor and prevent metastasis.

2. Procedure

The procedure for CPT® Code 26910 involves several critical steps, which are detailed as follows:

  • Step 1: The surgeon begins by making a V-shaped incision over the carpometacarpal joint of the affected finger or thumb. This incision is designed to provide access to the underlying structures while minimizing damage to surrounding tissues.
  • Step 2: The incision is extended down to the distal aspect of the metacarpal bone, allowing the surgeon to carefully dissect the soft tissues surrounding the bone. This step is crucial for exposing the distal metacarpal bone adequately.
  • Step 3: Once the distal metacarpal bone is exposed, the surgeon addresses the tendons associated with the finger or thumb. Tendons may be detached or divided as necessary, and they are reattached to the remaining metacarpal bone to maintain functionality of the hand.
  • Step 4: The digital nerves are then divided, and the nerve ends are transferred to the interosseous space. This step is important to prevent the formation of neuromas, which can occur if nerve endings are left unaddressed.
  • Step 5: Blood vessels supplying the area are suture ligated and divided to control any bleeding during the procedure, ensuring a clear surgical field.
  • Step 6: A small bone saw is utilized to cut the metacarpal bone at the desired level, completing the amputation process.
  • Step 7: After the bone has been cut, the surgeon rearranges the soft tissues to cover the exposed metacarpal bone adequately. This step is essential for protecting the bone and promoting healing.
  • Step 8: Finally, the overlying soft tissues are closed in layers, ensuring that the surgical site is properly sealed and that healing can occur without complications.

3. Post-Procedure

Post-procedure care following a ray amputation involves monitoring the surgical site for signs of infection, managing pain, and ensuring proper healing. Patients may require follow-up visits to assess the healing process and to address any complications that may arise. Rehabilitation may also be necessary to help the patient regain function in the hand, depending on the extent of the amputation and the involvement of surrounding structures. Proper wound care instructions will be provided to the patient to facilitate recovery and minimize the risk of complications.

Short Descr AMPUTATE METACARPAL BONE
Medium Descr AMP MTCRPL W/FINGER/THUMB W/WO INTEROSS TRANSFER
Long Descr Amputation, metacarpal, with finger or thumb (ray amputation), single, with or without interosseous transfer
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) 1 - Statutory payment restriction for assistants at surgery applies 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 4
CCS Clinical Classification 164 - Other OR therapeutic procedures on musculoskeletal system
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).
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).
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.)
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
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GW Service not related to the hospice patient's terminal condition
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
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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