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Official Description

Synovectomy, metacarpophalangeal joint including intrinsic release and extensor hood reconstruction, each digit

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 26135 refers to a surgical procedure known as synovectomy of the metacarpophalangeal (MCP) joint, which includes the intrinsic release and extensor hood reconstruction for each digit. The MCP joints are critical articulations located between the metacarpal bones of the hand and the proximal phalanges of the fingers, allowing for a wide range of motion essential for hand function. In this procedure, the surgeon makes an incision over the affected MCP joint to access the joint capsule. The synovial tissue, which is often inflamed and can cause pain and dysfunction, is excised to alleviate symptoms. Additionally, the extensor hood, which is a complex structure formed by the extensor tendons that facilitate finger extension, is carefully dissected and reconstructed. This reconstruction is vital for ensuring that the interconnected tendons and ligaments can function properly, allowing for smooth and balanced motion of the fingers. The procedure is particularly beneficial for patients suffering from conditions that affect the MCP joint, such as rheumatoid arthritis or other inflammatory joint diseases, where the synovial tissue becomes problematic.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 26135 is indicated for various conditions affecting the metacarpophalangeal (MCP) joint. These indications may include:

  • Rheumatoid Arthritis - A chronic inflammatory disorder that affects the joints, leading to synovial inflammation and pain.
  • Synovitis - Inflammation of the synovial membrane, which can cause swelling and pain in the MCP joint.
  • Joint Dysfunction - Conditions that impair the normal function of the MCP joint, resulting in limited range of motion and discomfort.
  • Joint Deformities - Structural changes in the MCP joint that may require surgical intervention to restore function.

2. Procedure

The procedure for CPT® Code 26135 involves several critical steps to ensure effective treatment of the MCP joint. The steps are as follows:

  • Step 1: Incision - The surgeon begins by making an incision over the affected metacarpophalangeal joint. This incision allows access to the underlying structures while minimizing damage to surrounding tissues.
  • Step 2: Dissection - Soft tissues surrounding the joint are carefully dissected to expose the joint capsule. During this step, the surgeon takes special care to protect nearby nerves and blood vessels to prevent complications.
  • Step 3: Joint Capsule Exposure - Once the joint capsule is exposed, it is incised to allow for direct visualization of the joint interior. This step is crucial for assessing the condition of the synovial tissue.
  • Step 4: Synovial Tissue Excision - The inflamed synovial tissue is excised from the joint. This removal is essential for alleviating pain and restoring normal joint function.
  • Step 5: Extensor Hood Dissection - The extensor hood, which is integral to finger movement, is carefully dissected from surrounding tissues. This step ensures that the extensor tendons are preserved for reconstruction.
  • Step 6: Extensor Hood Reconstruction - After dissection, the extensor hood is reconstructed to ensure that the interconnected tendons and ligaments can move freely. This reconstruction is vital for maintaining the functional integrity of the fingers.

3. Post-Procedure

Following the synovectomy and extensor hood reconstruction, patients typically require post-procedure care to promote healing and restore function. This may include immobilization of the hand to allow for proper recovery, as well as physical therapy to regain strength and range of motion. Patients are monitored for any signs of complications, such as infection or excessive swelling. The expected recovery time can vary based on the individual’s overall health and the extent of the procedure, but rehabilitation is crucial for achieving optimal outcomes.

Short Descr REVISE FINGER JOINT EACH
Medium Descr SYNVCT MTCARPHLNGL JT W/INTRNSC RLS&XTNSR HOOD
Long Descr Synovectomy, metacarpophalangeal joint including intrinsic release and extensor hood reconstruction, each digit
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) 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 162 - Other OR therapeutic procedures on joints
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.
F4 Left hand, fifth digit
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).
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).
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
F1 Left hand, second digit
F2 Left hand, third digit
F3 Left hand, fourth 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
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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2011-01-01 Changed Short description changed.
Pre-1990 Added Code added.
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