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Official Description

Excision or curettage of bone cyst or benign tumor of radius or ulna (excluding head or neck of radius and olecranon process); with allograft

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 25126 refers to the excision or curettage of a bone cyst or benign tumor located in the radius or ulna, specifically excluding the head or neck of the radius and the olecranon process. A bone cyst is defined as a fluid-filled space within the bone, which can vary in type. The unicameral or simple bone cyst is the most common, characterized as a benign lesion. Another type, the aneurysmal bone cyst, is less common and consists of vascular tissue surrounding a blood-filled cystic lesion. Additionally, there are various benign bone tumors, including giant cell tumors, chondromyxoid fibromas, and enchondromas. The procedure involves making an incision over the lesion site in the radial or ulnar shaft or distal radius or ulna, followed by dissection of the soft tissues to expose the lesion. If a cystic lesion is identified, the bone is incised to create a window, allowing for the aspiration of fluid, which is then sent for laboratory analysis. The lining of the cystic cavity is removed through curettage, or the lesion may be excised along with a margin of healthy bone. In this specific code, after the lesion is treated, the resulting defect is filled with donor bone, known as allograft, to promote healing and structural integrity of the bone.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure associated with CPT® Code 25126 is indicated for the treatment of specific conditions affecting the radius or ulna. These include:

  • Bone Cyst A fluid-filled space within the bone that may require intervention due to size, symptoms, or risk of fracture.
  • Benign Tumor Non-cancerous growths in the bone that may cause pain, discomfort, or structural issues, necessitating removal.

2. Procedure

The procedure for CPT® Code 25126 involves several critical steps to ensure effective treatment of the bone cyst or benign tumor:

  • Step 1: Incision An incision is made in the skin over the site of the lesion located in the radial or ulnar shaft or distal radius or ulna. This initial step is crucial for accessing the underlying bone and lesion.
  • Step 2: Dissection The soft tissues surrounding the lesion are carefully dissected to expose the lesion fully. This step requires precision to avoid damaging surrounding structures.
  • Step 3: Lesion Exposure Once the lesion is exposed, the physician assesses whether it is a cystic lesion or a benign tumor. If it is a cystic lesion, the next step involves incising the bone to create a window for access.
  • Step 4: Cystic Lesion Treatment For cystic lesions, fluid is aspirated from the cyst and sent for laboratory analysis. A curette is then inserted through the bone window to remove the lining of the cystic cavity completely.
  • Step 5: Benign Tumor Excision If the lesion is a benign tumor, the physician excises the tumor along with a margin of surrounding healthy bone to ensure complete removal and minimize the risk of recurrence.
  • Step 6: Allograft Application After the lesion has been treated, the resulting defect in the radius or ulna is packed with donor bone (allograft) to facilitate healing and restore structural integrity to the bone.

3. Post-Procedure

Post-procedure care for CPT® Code 25126 typically involves monitoring the surgical site for signs of infection and ensuring proper healing of the bone. Patients may be advised to limit weight-bearing activities on the affected limb for a specified period to promote recovery. Follow-up appointments are essential to assess the healing process and the integration of the allograft into the bone. Rehabilitation may be recommended to restore function and strength to the affected area.

Short Descr REMOVE/GRAFT FOREARM LESION
Medium Descr EXC/CURTG CYST/TUMOR RADIUS/ULNA W/ALLOGRAFT
Long Descr Excision or curettage of bone cyst or benign tumor of radius or ulna (excluding head or neck of radius and olecranon process); with allograft
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) 1 - 150% payment adjustment for bilateral procedures applies.
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 1
CCS Clinical Classification 142 - Partial excision bone
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).
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.
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
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
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