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Official Description

Excision of bone cyst or benign tumor, wing of ilium, symphysis pubis, or greater trochanter of femur; deep (subfascial), includes autograft, when performed

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 27066 refers to the excision of a bone cyst or benign tumor located in specific areas of the pelvis or proximal femur, particularly the wing of the ilium, symphysis pubis, or greater trochanter of the femur. This procedure is classified as a deep excision, which means it involves deeper anatomical structures and requires more extensive dissection of soft tissues compared to superficial procedures. A bone cyst is defined as a fluid-filled space within the bone, which can vary in type, with common examples being unicameral or simple bone cysts and less frequently, aneurysmal bone cysts. Benign bone tumors, which may also necessitate excision, include various types such as giant cell tumors, chondromyxoid fibromas, and enchondromas. The procedure not only involves the removal of the cyst or tumor but may also include the use of an autograft, which is a surgical procedure where bone is harvested from the patient and used to fill the defect left after the excision. This code is essential for accurately documenting and billing for the surgical intervention performed on these deeper bone lesions, ensuring proper reimbursement and compliance with coding standards.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure associated with CPT® Code 27066 is indicated for the excision of bone cysts or benign tumors located in the deeper structures of the pelvis or proximal femur. The specific indications for this procedure include:

  • Bone Cysts - Fluid-filled spaces within the bone that may require surgical intervention due to size, symptoms, or potential complications.
  • Benign Tumors - Non-cancerous growths in the bone that may cause pain, discomfort, or functional impairment, necessitating removal.
  • Symptomatic Lesions - Lesions that present with symptoms such as pain, swelling, or functional limitations that impact the patient's quality of life.

2. Procedure

The procedure for CPT® Code 27066 involves several critical steps to ensure the effective excision of the deep bone cyst or benign tumor. The steps are as follows:

  • Step 1: Anesthesia Administration - The patient is positioned appropriately, and anesthesia is administered to ensure comfort during the procedure.
  • Step 2: Incision and Dissection - A surgical incision is made over the site of the lesion. The surgeon carefully dissects through the soft tissues to access the deeper bony structures where the cyst or tumor is located.
  • Step 3: Exposure of the Lesion - Once the deeper structures are reached, the lesion is exposed. This may involve additional dissection to adequately visualize the cyst or tumor.
  • Step 4: Lesion Removal - The cystic lesion or benign tumor is excised along with a margin of surrounding healthy bone to ensure complete removal and minimize the risk of recurrence.
  • Step 5: Bone Defect Management - After excision, the resulting bony defect may be left open or packed with a bone autograft. If an autograft is used, local healthy bone is harvested through the same incision and placed into the defect to promote healing and structural integrity.

3. Post-Procedure

Post-procedure care for patients undergoing the excision of a deep bone cyst or benign tumor includes monitoring for complications such as infection, bleeding, or issues related to the bone graft. Patients are typically advised on pain management strategies and may require physical therapy to restore function and mobility in the affected area. Follow-up appointments are essential to assess healing and ensure that the surgical site is recovering appropriately. The physician will provide specific instructions regarding activity restrictions and signs of complications that should prompt immediate medical attention.

Short Descr REMOVE HIP BONE LES DEEP
Medium Descr EXCISION BONE CYST/BENIGN TUMOR DEEP
Long Descr Excision of bone cyst or benign tumor, wing of ilium, symphysis pubis, or greater trochanter of femur; deep (subfascial), includes autograft, when performed
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) 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) P3D - Major procedure, orthopedic - other
MUE 1
CCS Clinical Classification 142 - Partial excision bone
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.
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
RT Right side (used to identify procedures performed on the right 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.
62 Two surgeons: when 2 surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62 to the procedure code and any associated add-on code(s) for that procedure as long as both surgeons continue to work together as primary surgeons. each surgeon should report the co-surgery once using the same procedure code. if additional procedure(s) (including add-on procedure(s) are performed during the same surgical session, separate code(s) may also be reported with modifier 62 added. note: if a co-surgeon acts as an assistant in the performance of additional procedure(s), other than those reported with the modifier 62, during the same surgical session, those services may be reported using separate procedure code(s) with modifier 80 or modifier 82 added, as appropriate.
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).
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).
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
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)
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
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
Action
Notes
2013-01-01 Changed Medium Descriptor changed.
2011-01-01 Changed Long description revised. Medium description changed. Short description changed.
Pre-1990 Added Code added.
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